Accurate distributed inductance of spiral resonators

Hejazi, Z.M.; Excell, Peter S.; Jiang, Zhaoneng

doi:10.1109/75.663521

Cited by 27 publications

(15 citation statements)

References 6 publications

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“…The properties of the SR resonator have been studied in many papers. In , the electromagnetic analysis and equivalent circuit (EQC) of the isolated SR have been presented. When the SR is embedded in the microstrip transmission line, its behavior is affected by the line structure mainly by mutual inductive and capacitive coupling between the resonator and the frame around the resonator (Fig.…”

Section: Equivalent Circuit Modelmentioning

confidence: 99%

Modeling and characterization of spiral resonators embedded in suspended microstrip line for application in low‐loss diplexer

Górski

Jaworski

2013

Micro & Optical Tech Letters

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This article presents the design and realization of anovel, low‐loss, compact diplexer providing high selectivity and verygood separation between very narrow spaced working channels for application in the ESEO satellite transceiver. The diplexer is based on spiral resonators (SR) embedded in the suspended microstrip line and forming band‐stop filter structures. For design purpose, the equivalent‐circuit model of the SR resonator embedded in microstrip line is derived, analyzed, and verified. The influence of the model parameters on S11 and S21 characteristics has been studied and discussed. The double stage filter with embedded SR resonators has been described. A novel method is proposed to precisely control the filter selectivity, bandwidth, and the position of S11 minimum. The filter has been applied in the diplexer design. The measured performance of the manufactured diplexer prototype exhibits good properties and good agreement with the simulation results. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:131–135, 2014

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Section: Equivalent Circuit Modelmentioning

confidence: 99%

Modeling and characterization of spiral resonators embedded in suspended microstrip line for application in low‐loss diplexer

Górski

Jaworski

2013

Micro & Optical Tech Letters

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“…The inductance in that method was derived from a standard formula [10] which led to a 30% to 100% disagreement with the measurement. Although Hejazi improved Jiang's method [11], his method is too complicated and difficult to use. Another method called the Lumped-Element model [12] for the analysis of rectangular spiral inductance was also suggested; however, this model did not consider the loss of signal into the substrate and only concerned the weak coupling between perpendicular strips.…”

Section: Introductionmentioning

confidence: 99%

Design of superconducting MRI surface coil by using method of moment

Fang

Chow

Chan

et al. 2002

IEEE Trans. Appl. Supercond.

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A method of moment with an enhanced model to design high-temperature superconductor (HTS) RF surface coils for magnetic resonant image (MRI) is presented. The resonant frequency and quality factor ( ) of HTS RF spiral coils are simulated using this method. The agreements of resonant frequencies and s between the simulation and measurement are excellent with differences less than 1% and 3%, respectively. The 0.2-m-thick YBaCuO (YBCO) thin films are deposited onto single side of 0.508-mm-thick LaAlO 3 (LAO) and sapphire substrate and patterned into a spiral shape. To accurately analyze the resonant frequency and of a coil, an enhanced two-fluid model is employed. HTS RF coils with diameter of 65 mm for 0.2T and 1.5T MRI systems are designed and fabricated with the measured of 19 K and 23 K, respectively. In addition, the shift of resonant frequency due to the mutual coupling between two HTS spiral coils is predicted by this method, which is important for design of HTS coil arrays in an MRI system.

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“…In microwave theories, the significance of the microstrip transmission line is well established. In passive RFID system, tag is mainly based on the transmission line theory [15], [16]. …”

Section: Introductionmentioning

confidence: 99%

Linear Microstrip Resonator for Uwb Rfid Tag

I¹

2017

GEOMATE

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ABSTRACT:The data storage capacity is directly proportional to the number of bits on board of the tag. The main challenge in UWB tag development is to maintain higher number of bits while keeping the tag within the standard size. Higher number of bits also ensures more security and anti-tempering protection of the tagging. In addition, reducing the dimensions of the tag can lead to the possibilities of fully replacing the existing barcode identification system. A new type of planar shorted parallel coupled line microstrip resonator which can replace the existing planar rectangular type resonator has been proposed in this paper. The theoretical approximation and simulation have been performed. A 20-bit resonator has been designed and developed that works between 4.6GHz and 8.1GHz. It is found that the bit density per unit area (cm 2 ) is about 6.67 bit/cm 2 has been achieved. The simulation has been performed by CST MWS 2017. The results would motivate the researchers to develop a higher bit density UWB passive RFID tag.

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Accurate distributed inductance of spiral resonators

Cited by 27 publications

References 6 publications

Modeling and characterization of spiral resonators embedded in suspended microstrip line for application in low‐loss diplexer

Modeling and characterization of spiral resonators embedded in suspended microstrip line for application in low‐loss diplexer

Design of superconducting MRI surface coil by using method of moment

Linear Microstrip Resonator for Uwb Rfid Tag

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