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Microstrip ring resonator

Dielectric Properties Characterization of Material Under Test using Microstrip Ring Resonator. Khuzairi Masrakin, Sofea Abdul Malek, Siti Zuraidah Ibrahim, H. Rahim, A. Dewani. Physics, Materials Science. 2021 A microstrip ring resonator is a simple transmission line resonator whose geometry is shown in Fig. 1. The resonator is excited by a transmission line through a capacitive coupling and at certain frequencies, depending on the electrical length (perimeter) of the resonator, a standing wave pattern forms around the circular path of the resonator A microstrip ring resonator is a simple transmission line resonator whose geometry is shown in Fig. 1. The resonator is excited by a transmission line through a capacitive coupling and at certain frequencies, depending on the electrical length (perimeter) of the resonator

Microstrip ring resonators are widely used in many mi-crowavedevices,particularlyinfilters,mixers,oscillators,and couplers 1. The interest of researchers and commercial communication industry engineers to these structures has recently increased due to the application of ferroelectric thin-film substrates and high-temperature superconductin An approach for measuring the permittivity of dielectric materials by means of a microstrip ring resonator is presented. The method is used in conjunction with the variational calculation of the line capacitance of a multilayer microstriplike transmission line to compute the effective permittivity and hence the resonant frequency of the ring. The results are compared with measurements made in. Full Article. Optimum Design of a Microstrip Ring Resonator Sensor to Determine the Moisture Content in Oil Palm Fruits and Seeds. Ahmad Fahad Ahmad, a, * Zulkifly Abbas, a, * Hameda Ali Abrass, a and Kok Yeow You b Oil palm fresh fruit bunch (OPFFB) is the main export product of the oil palm industry

[PDF] The Microstrip Ring Resonator for Characterising

  1. Joined Nov 15, 2019. 1,047. Feb 27, 2021. #2. Hello there. Welcome to AAC. I have designed microstrip ring resonators and have run into many problems in the gigahertz range. measuring permittivity with a microstrip structure, you will be measuring the effective dielectric constant, no ifs ands or buts. If the technique involves coax, waveguide.
  2. It describes open end, stub, ring and dielectric based microstrip Resonator types. The figure-1 depicts different types of microstrip resonators. As we know boundary conditions force circuits to have their resonance at particular frequencies. Open end resonators and stub resonator types will have voltage wave maximum at open edges
  3. Smith chart for the gap-coupled microstrip resonator 21 Example 6.6 Di fGDesign of Gap-CldMi tiR tCoupled Microstrip Resonator 50-Ω microstrip feedline, 50-Ω microstrip /2 resonator with 21.75 mm, 1 1.9, 0.001 dB/mm. Find the coupling capacitor and the resonant frequency . reff f Sol: 11 0 310 5 GHz 2 2 21.75 1.9 p g ff v c
  4. An optical ring resonator is a set of waveguides in which at least one is a closed loop coupled to some sort of light input and output. (These can be, but are not limited to being, waveguides.) The concepts behind optical ring resonators are the same as those behind whispering galleries except that they use light and obey the properties behind constructive interference and total internal.

Measurement of dielectric constant using a microstrip ring

of ring resonators. 2.1. All-pass ring resonators In its simplest form a ring resonator can be constructed by feeding one output of a directional coupler back into its input, the so-called all-pass filter (APF) or notch filter con-figuration (see Fig.2A). The term ring resonator is typically used to indicate any looped resonator, but in the. A study of the microstrip ring resonator and its applications. Master's thesis, Texas A&M University. Available electronically from https: / /hdl.handle.net /1969.1 /ETD-TAMU-1987-THESIS-M383. Request Open Access. This item and its contents are restricted. If this is your thesis or dissertation, you can make it open-access

A prototype microstrip ring resonator at L-band is designed and measurements of soil with different moisture contents are presented and compared with other approaches. Published in: IEEE Transactions on Geoscience and Remote Sensing ( Volume: 35 , Issue: 5 , Sep 1997) Article #: Page(s. Microstrip ring resonators, proposed by Troughton to measure the dispersion of microstrip transmission lines [11], has been an attractive means for the measurement of the electrical properties of dielectrics. This technique, utilizes the resonance frequency and the Q factor of the ring resonator t Microstrip Ring Resonator Ya Guo @ Seminar Course 03/23/2016. Contents 1. Introduction to mm-wave transmission line 2. Analysis and modeling of ring resonator 3. Dielectric permittivity characterization mechanism using resonator 4. Characterization of complex permittivity of dielectri

Optimum design of a microstrip ring resonator sensor to

  1. A microstrip ring resonator is coupled through gaps to the microstrip feed lines for a two-port ring resonator (and single microstrip feed line for a single-port ring resonator). The operation of a two-port ring resonator is based on satisfying a simple condition for resonance defined by the equation: 2πR = nλ g for n = 1, 2, 3 wher
  2. Although a dielectric resonator will resonate in several modes, the TE 01δ (transverse-electric) mode is most commonly used in many applications. When operating in this mode, a dielectric resonator may be magnetically coupled to a circuit by several different methods. One method is to couple the resonator to a microstrip line
  3. A wideband microstrip ring resonator bandpass filter with embedded rings was proposed in this study. Propounded filter by producing multiple resonances at the upper stopband can provide a wide stopband. A total of three resonances can be utilized to obtain a highly attenuated upper stopband without cascading the structure
  4. This is how to design a Microstrip Ring Resonator in HFSS 15. If you have any inquiry, please email to vnemsolutionsvnemsolutions@gmail.com

Microstrip ring resonator All About Circuit

2. Design edge and side coupled microstrip ring resonators with resonance frequency of 2.4 GHz to be excited by microstrip line with characteristic impedance of 50 ohms. Calculate frequency characteristics of these resonators. Dielectric permittivity of substrate is of 4.3 and the thickness is of 0.2cm Microstrip Ring Resonator for Soil Moisture Measurements Accurate determination of spatial soil moisture distribution and monitoring its temporal variation have a significant impact on the outcomes of hydrologic, ecologic, and climatic models. Development of a successful remote sensing instrument for soil moisture relies on the accurate knowledge of the soil dielectric constant (epsilon(sub.

In this paper, an RF power amplifier (PA) using a microstrip ring resonator (MRR) structure based on the image parameter method is proposed. The MRR structures are utilized as decoupling circuits at the DC supply of the active device. The design process is quite easy and applicable for microwave and RF PA design microstrip ring resonators in order to assess the feasibility as well as suitability of the FDTD simulation method for mate-rial characterization. Ring resonators, with and without slits in the coupling zones, of both edge- and side-coupled types, are simulated fo In this thesis, I describe a new microstrip-based resonant device that is specifically intended for permittivity measurements of low dielectric constant materials at frequencies 1 to 10 GHz. The device is based on a microstrip ring resonator with the ring and the ground plane/feed network physically located in separate planes

2. Design edge and side coupled microstrip ring resonators with resonance frequency of 2.4 GHz to be excited by microstrip line with characteristic impedance of 50 ohms. Calculate frequency characteristics of these resonators. Dielectric permittivity of substrate is of 4.3 and the thickness is of 0.2cm In this paper, Microstrip Ring Resonators are designed on different substrates and evaluated. For designing a microstrip ring resonator it is very important to figure out the radius of the resonator and its mean, the length and feed lines width at a certain operating frequency. The designing of the microstrip ring resonator is done using HFSS and result is obtained on the basis of S-parameter. 8 A closed-loop microstrip ring resonator...19 9 The input impedance of (a) one-port network and (b) two-port network of the closed-loop ring resonator...20 10 Equivalent elements Gc, Cc, and Lc of the closed-loop ring resonator...23 11 Transmission-line model of the closed-loop square ring resonator.. resonator with the radius of 0.85mm and 1.25mm for inner ring and outer ring, respectively. The major advantage of the proposed antenna is its compactness and bandwidth. the frequency range is indicated by the IEEE standards at 8.0 to Keywords: Microstrip Patch, Split Ring Resonator, Return Loss, FR4, X Band

A microstrip circuit which features a pair of open ring resonators sections adapted to oscillate independently in their even mode. In a preferred form, the ring resonator sections are each driven by a TRAPATT diode, and include a load circuit which combines the individual power outputs to a common load. Tuning stubs and the like may be provided to reactively trap harmonics in order to initiate. hello. I simulate microstrip ring resonator with FDTD and matlab code, above resonator lossy material. ( relative permibelity Er and conductivity segma), my problem resonant frequency (s21) don't change with change of Er and segma else in free space is change for example when 1-Er=1 and sgma=0 for free space first resonant (fr1)is 3 GHz The annular ring may also be somewhat broadband in nature when operated near the TM resonance [5]. It has been shown that the structure is a good resonator (with very little radiation) for TM modes (m odd), and a good radiator for TM modes (m even) [8]. A circular ring microstrip antenna is designed for TM mode a

Future research work involves designing a microstrip antenna using a radiation shielding metamaterial-based split-ring resonator due to its high absorption rate and unavailability in nature. Future work can also be carried out by increasing the thickness of radiation shielding materials Integrated Planar Monopole Antenna with Microstrip-Ring Resonators. Wang-sang Lee. Related Papers. WIDEBAND RECONFIGURABLE ANTENNAS. By Sara Affandi. frequencies of the. By Mahdi Moosazadeh. A new feed technique for microstrip ring antennas and its application in multi-ring multi-band antennas double circular slot ring resonator (MDCsRR) metamaterial unit cell is presented in this paper. New MDCsRR is a compact low frequency slot ring resonator. The principle of the proposed patch antenna Initially a microstrip patch antenna of dimension 19mm. Split ring resonators (SRR) have been shown to exhibit negative permeability around resonant frequency . Complementary Split Ring Resonator (CSRR) is the counter image of SRR which shows negative permittivity for a particular band of frequencies . CSRR etched on the ground plane at the back of a microstrip line is a well-known technique to. A quarter wavelength high-Q resonator based on the well-known split-ring resonator (SRR) element in series configuration on a microstrip line is proposed in this letter.The small size is achieved by working at the quasi-static resonant frequency of the SRR. A relatively high value of unloaded-Q of 137 is achieved, which is considerably higher than other microstrip resonators like closed-loop.

The double Split-ring Resonator (SRR) shape are used as metamaterial structures to realize the stop-band characteristic and the stepped-impedance resonators are utilized to reduce the size of the filter structure. The simulation results show good performances in the rejected band which validate the function of the microstrip filter Read Periodically slotted microstrip ring resonator, Microwave and Optical Technology Letters on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips

Microstrip Resonator basics Microstrip Resonator types

  1. Multiple Split Ring Resonator Inspired Dual Band Microstrip Patch Antenna Array Chirag Arora1, Shyam S. Pattnaik2, R. N. Baral3 . Abstract-A shorted -pin, dualband, metamaterialinspired microstrip patch antenna array has been discussedin this paper . Under the unloaded conditions, the patch antenna traditiona
  2. e the Moisture Content in Oil Palm Fruits and Seeds Ahmad Fahad aAhmad* aZulkifly Abbas,a,* Hameda Ali Abrass, and Kok Yeow You b Oil palm fresh fruit bunch (OPFFB) is the main export product of the oi
  3. Split Ring Resonator Loading for WLAN and RF-ID Applications Nambiyappan T. Selvi1, 2, *, Ramasamy Pandeeswari3, and Palavesa T. Selvan4 Abstract—In this paper, the analysis and design of a compact Multiple Split Ring Resonator (MSRR) inspired microstrip rectangular patch antenna is presented. The MSRR is used with four rings. Th
  4. 2. MODIFIED TRI-MODE RING RESONATORS Figure 1 shows the structures of these two microstrip modified tri-mode ring resonators, Resonator A and Resonator B. Resonator A consists of a traditional ring resonator, two 90 -crossed strips, and four concentric radial stubs loaded to the center of the ring. Resonator B is composed of a traditional ring
  5. A new equation to measure the dielectric constant of materials using a microwave microstrip ring resonator (MMRR) at 10 GHz by empirically modifying the design equation of the effective dielectric constant of the system is proposed. Each material, with the proper size of interest, is overlaid on the MMRR and the change in resonance frequency.

In other works, complementary split ring resonators (CSRR) have great area of interest among the researchers and are an ideal candidate to reduce the size of microstrip antenna [9, 10]. CSRR behaves as an electric dipole that can be excited by an axial electric field and make the structure behaves as an effective medium with negative value of. A microstrip-fed compact multi-band slot antenna using a single split-ring resonator (SRR) is proposed. The SRR acting as a loading element introduces multiple lower-order resonances in the antenna, which can be controlled by varying the SRR's dimensions as well as its position with respect to the arm of the slot, without altering the geometry of the radiating slot

A simple microfluidic LTCC sensor based on the microstrip ring resonator was designed. It was assumed the micro-channel, located under the ring, was filled with a mixture of DI water and ethanol, and the operating frequency of the resonator was tuned to 2.4 GHz. The substrate was fabricated by standard LTCC process, and the pattern of the. Compact double notch coplanar and microstrip bandstop filters are described. They are based on a version of the open interconnected split ring resonator (OISRR) integrated in microstrip or coplanar waveguides. The OISRR introduces an RLC resonator connected in parallel with the propagating microstrip line. Therefore, this resonator can be modeled as a shunt circuit to ground, with the R, L and. In this paper microstrip antenna with Complimentary Dual Split Ring Resonator (CDSRR) is designed using IE3D simulation software and measured practically. The array of 1 x 3 CDSRR is embedded in the ground plane and the study has been made by increasing the number of CDSRRs to 3 x3 configuration FIG. 4 is an exploded isometric view of a broadband reactively fed microstrip ring resonator according to a second embodiment of this invention. DESCRIPTION OF THE PREFERRED EMBODIMENT. Before proceeding with a detailed description of the contemplated capacitively fed microstrip antenna, it should be noted that ancillary elements, such as. Magnetically tunable quad-band microwave filters comprised of a microstrip line, split-ring resonators and reed switches have been implemented on commercially available double-sided Rogers.

Optical ring resonators - Wikipedi

  1. Read Microstrip patch antenna project with split ring resonator periodically arrayed on the substrate, Microwave and Optical Technology Letters on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips
  2. Broadband bandpass filters based on open complementary split ring resonators (OCSRRs) coupled through admittance inverters, and implemented in microstrip technology, are reported. As compared to other broadband filters based on open split ring resonators (OSRRs), ground plane etching is not necessary in the proposed filters. The selectivity of the filters at the upper transition band is.
  3. 2. Structure, Design, and Performance of a Microstrip UWB Bandpass Filter . The configuration of the proposed UWB bandpass filter is shown in Fig.1. It consists of a microstrip dual-mode square ring resonator. Each side of the ring has an electrical length of , and is about one quarter-wavelength . 978-1-4673-5225-3/14/$31.00 ©2014 IEE
  4. Because of that many recent papers discuss various printed filter configurations having size reduction as one of the most important design goals [2].A bandpass filter using microstrip ring resonators with 25% size reduction compared to the conventional microstrip filter with coupled halfwavelength resonators was proposed in [1]
  5. There are different ring resonator coupling methods which can be used in various applications . The SRR resonators are connected directly to the microstrip TLs. The transmission line loaded by an OSRR in microstrip technology shows an additional phase shift due to having Lp and C p in the equivalent circuit model

A study of the microstrip ring resonator and its application

  1. Broadband compact microstrip patch antenna design 5 C s = ε at 2g (2) where, μ 0 is the permeability of free space (μ 0 = 4π × 10−7 NA−2), a is the ring width, g is the split gap, b is the ring length, ε is the permittivity of the material, t is the thickness of the split ring. In this paper, the dimensions are chosen to be: a = 1 mm, g = 2 mm, b = 6 mm, t = 1.3 mm
  2. a coated with a dielectric layer or sometimes silicon or some other.
  3. complimentary split ring resonators (CSRR) are etched on the top layer of metamaterial structure. Computer simulated technique (CST) is used to simulate the filter design. Main objective of this Paper is to offer a unique RF/microwave microstrip filter based on the complementary square ring resonator structures

Microstrip ring resonator for soil moisture measurements

Ring Resonators Help Characterize PCB Materials 2014-03

A planar microstrip ring resonator structure on alumina was developed using the commercial FEM software COMSOL. Design parameters were evaluated, eventually leading to an optimized design of a miniaturized microwave gas sensor. The sensor was covered with a zeolite film. The device was successfully In a preliminary study, a new oil palm fruit sensor was proposed for detecting the maturity of OPFFB, and a microstrip ring resonator was designed for determining the moisture content in oil palm fruit. The coaxial feeder of the microstrip ring was a Sub-Miniature A (SMA) stub contact panel with outer and inner conductors of 4.1 mm and 1.3 mm. microstrip ring resonators into Si technology using ion implanta-tion. The resonators on conventional Si, without implantation, show large insertion loss from the substrate. This is the first successful demonstration of integrated mm-wave ring resonators on Si with a process employing a VLSI-compatible technology. 2. DESIGN PROCES and microstrip-ring resonator edge gap (k) is the opposite. By decreasing the edge gap, a high insertion loss was obtained. The analysis of the edge gap (k); shows its major in°uence on the resonant frequency of the proposed design. The edge gap (the distance between the feed line an A new microwave microstrip sensor is presented in this paper for microsphere detection and dielectric characterization within a microfluidic channel. This comprises a 2.5 GHz split ring resonator with a 35 μm gap. To validate the sensor, two sizes of polystyrene microspheres (of diameters 15 and 25 μm) were tested. Measurements of changes in resonant frequency and insertion loss of the odd.

Stopband split ring resonator (SSRR) is presented in this paper for measuring complex permittivity of liquid with different position of microfluidic channel operates at resonant frequency of 1 GHz. The sensor was fabricated and microfluidic channel is located in the gap groove with two different positions of the carrier where the electric field is as large as possible.  The sensor has. Microstrip patch antenna Metamaterial Split ring resonator Circular hole Hyperthermia Specific absorption rate (SAR) 1. Introduction Current paper is an extended version of work originally presented in [1]. Veselago first proposed the microstrip antenna concept of the negative refractiv Design/methodology/approach - A simple microfluidic LTCC sensor based on the microstrip ring resonator was designed. It was assumed the micro-channel, located under the ring, was filled with a mixture of DI water and ethanol, and the operating frequency of the resonator was tuned to 2.4GHz microstrip line. It consists of a symmetrical split ring resonator unlike SRR structure, which has slits ring resonators. The SSRR circuit dimensions are 100 mm x 68 mm x 0.787 mm (Lg x Wg x h), respectively, with the rings resonator radius Ro = 15.85 mm and Ri = 10.58mm and line length L = 34 mm patched on the substrate plane o HE MICROSTRIP ring resonator has been widely used in the development of microwave bandpass filters, couplers, mixers, oscillators, and antennas [1]. It has many attractive fea-tures, including low radiation loss, high- factor, compact size, split modes, and sharp rejection skirts. Without involving an

of a microstrip-ring band pass filter, which is composed of a rectangular-ring resonator and a pair of symmetrical end-open T-shaped microstrip lines for its input and output. Fig. 3 shows the geometry of the proposed planar monopole antenna with a microstrip ring resonator. A planar monopole with a rectangular patch size 18 £ 20mm2, and a 50 DESIGN AND ANALYSIS OF MICROSTRIP PATCH ANTENNA WITH 2 HEXAGONAL SPLIT RING RESONATOR ARRAY FOR IOT APPLICATIONS P. POORNA PRIYA1, SYED INTHIYAZ2, M. VASANTH RAO3, S.K.P.V. SRI DEEPTHI4, P. SRI LIKHITHA5 1,2Associate Professor, Department of ECE, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur District A Microstrip Highpass Filter with Complementary Split Ring Resonators C. Li, K. Y. Liu, and F. Li Institute of Electronics, Chinese Academy of Science, China Abstract| An accurate equivalent circuit model for the microstrip line with a complementar Detection of Copper (II) Ion on Chitosan Film Using Microstrip Ring Resonator N. 1 , Osman 1,2*, A. Idris P. Abu Bakar 1, M. A. Mohd Abdull Majid , R. Radzali and J. Y. C. Liew1,2 1Applied Electromagnetic Lab I, Department of Physics, Faculty of Science, University Putra Malaysia

6 Types of Resonators Used Across the RF/Microwave

ring resonator loaded with microstrip line with the gap parallel and near to the line from transmission line theory that make use of just the resonance frequency and minimum of the reflection coefficient. The simulation of different orientations of split ring resonator gives better reflection coefficient and wider frequency. Keyword Microstrip ring resonator (MRR) sensor was modeled by simple equivalent lumped element circuits in free space based on simulation data obtained from Microwave Office (AWR) simulator and comparison was made with the measurements using the E5071C Network Analyzer. The calculated reflection coefficient, |G| and complex input impedance Zin using lumped element model were compared with the. Superconducting ring resonator with a Y 0.7 Ca 0.3 Ba 2 Cu 3 O 7-δ ground plane was fabricated by using Y 0.7 Ca 0.3 Ba 2 Cu 3 O 7-δ thin film deposited on both sides of a LaAlO 3 (LAO) substrate. The resonator exhibits a high quality factor Q > 10 4 at T < 30 K, and from empirical relation, T c /T c,max = 1 - 82.6(p - 0.16) 2, we obtained the hole concentration p.By controlling the oxygen.

Wideband microstrip ring resonator bandpass filter with

Microstrip Ring Resonator Design Guide in HFSS 15 - YouTub

Head-compliant microstrip split ring resonator for non

plane fed by microstrip line with slot-ring resonator (SRR) in rectangular tuning stub on the other side. The simulated results of characteristics slot antenna can achieve widen the bandwidth of 118 % coverage the frequency band from 2.95 GHz to 11.40 GHz (8.45 GHz) coverage UWB operations This paper introduces a new planar microstrip metamaterial resonator, the novelty of this paper lays in its unit cell design. The unit cell is formed by connecting metallic traces of two edge coupled split ring resonators to form the infinity symbol on one side of the substrate, and an array of conducting wires on the other. An RLC equivalent model of the structure is also proposed, it can be. at least one straight line quasi-combine resonator, disposed between the first microstrip split-ring resonator, and the second microstrip split-ring resonator. 2. The bandpass filter of claim 1, further comprising a first capacitor coupled across the gap in the first microstrip split-ring resonator. 3

Head‐compliant microstrip split ring resonator for non

Microstrip ring resonators are now used in bandpass filter applications to overcome the influence that parasitic components generated at short circuited points in resonators have on circuit losses and resonance frequencies. Referring to FIG. 1, a conventional split-ring resonator BPF 10 is shown. The BPF 10, having a single-ended input port and. Wolff I (1972) Microstrip Bandpass Filter Using Degenerate Modes of a Microstrip Ring Resonator. Electronics Letters 8(12): 302-303. View Article Google Scholar 3. Hong J S, Lancaster M J (1995) Bandpass Characteristics of New Dual-Mode Microstrip Square Loop Resonators. Electronics Letters 31(11): 891-892 Next a microstrip line is used to excite the LSPs modes to further improve the performance of the ultrathin corrugated MIM ring resonator and the schematic configuration is displayed in Fig. 5(a) I. Wolff , N. Knoppik . Microstrip ring resonator and dispersion measurement on microstrip lines. Electron. Lett. , 779 - 781 2) H.A. Wheeler . Transmission-line properties of parallel strips separated by a dielectric sheet. IEEE Trans. , 173 - 18 Abstract — In this work, Rectangular Microstrip Patch Antenna (RMPA) along with metamaterial which has Square Split Ring Resonator (SSRR) and Horizontal Rectangular Strip (HRS) structure is proposed at hight of 3.2 mm from the ground plane. The RMPA with proposed metamaterial structure is designed to resonate at 2.097 GHz frequency

Dual Mode Microstrip Ring Resonator with Composite-Right

Using microstrip splitter/combiner architecture, differential sensors have been proposed with a pair of transmission line in parallel that is being loaded with split ring resonators (SRR) [14], complementary split ring resonator (CSRR) [6] or step impedance resonators (SIR) [15]. In [10], SIR wit Another important observation is made for multiple split ring resonator loading in superstrate and substrate of microstrip patch antenna. The design is compared for two, three, and four-ring split ring resonator loading. The designs are also compared for different gap spacing between the rings

Design of Square Split Ring Resonator Shaped Metamaterial

High resolution microwave microstrip resonator for sensing

A harmonic suppression microstrip patch antenna integrated with complementary split ring resonator (CSRR) etched in the ground plane is proposed and investigated. By integrating with the Complementary split ring resonator (CSRR), the microstrip antenna can suppress the second and the third harmonics associated with the original structure while. Free Online Library: Cross-polarization reduction of E-shaped microstrip array using spiral-ring resonator.(Abstract) by Progress In Electromagnetics Research C; Physics Antenna arrays Analysis Design and construction Resonators Usage Strip transmission line This Letter presents a compact microstrip diplexer. The high-frequency signal path is constructed by two electrically-coupling half-wavelength resonators, its external coupling adopts the tapped line structure. The low-frequency signal path is formed by two magnetically-coupling quarter-wavelength resonators, its external coupling is accomplished by microstrip coupling lines, which are formed.

Design and implementation of magnetically–tunable quad(a) circular and (b) square split ring resonator, (cBroadband Microstrip Bandpass Filter Based on OpenGain Improvement of Dual Band Antenna Based on