A closed slot-line resonator filter

Remillard, Stephen K.; Radzikowski, Piotr O.; Cordone, S.; Applegate, D.S.; Mehrotra, Akhil; Kokales, J.D.; Abdelmonem, A.

doi:10.1109/lmwc.2004.827910

Cited by 10 publications

(7 citation statements)

References 4 publications

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“…It is not usually possible to analytically find the magnitude of the fields inside most resonators, let alone their geometric distribution. The field strength can be determined numerically using full-wave electromagnetic field simulation, as was done for example in Reference [20], or experimentally using a network analyzer, as is describe here.…”

Section: Using Slater's Theorem To Compute the Electric Field In The Gapmentioning

confidence: 99%

Using a Re-Entrant Microwave Resonator to Measure and Model the Dielectric Breakdown Electric Field of Gases

Remillard¹,

Hardaway²,

Mork³

et al. 2009

PIER B

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Abstract-A gas will breakdown in a high electric field and the mechanisms of this breakdown at DC and high frequency fields have been an object of study for the past century. This paper describes a method to induce breakdown in a uniform microwave field using a re-entrant sub-quarter wave resonator. Slater's theorem is used to determine the magnitude of the threshold electric field at which breakdown occurs. The breakdown threshold is modeled using the effective electric field concept, showing that breakdown varies withwhere P is the pressure, B and C are fit parameters, and m was found experimentally to equal 1/2. This function exhibits a minimum at P min = ω/B. Breakdown data from the literature for nitrogen at various microwave frequencies were found to exhibit breakdown minima at the pressure predicted by our own determination of B, further validating the model.

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Section: Using Slater's Theorem To Compute the Electric Field In The Gapmentioning

confidence: 99%

Using a Re-Entrant Microwave Resonator to Measure and Model the Dielectric Breakdown Electric Field of Gases

Remillard¹,

Hardaway²,

Mork³

et al. 2009

PIER B

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“…A slotline is often used in a filter as either a coupling component or resonator. As resonators, a slotline bandpass filter (BPF) has been widely applied in modern wireless communication systems [1][2][3][4][5][6][7][8][9]. Due to high-order resonant modes, a simple uniform slotline BPF has the first parasitic passband at 2f 0 (the center working frequency), which will narrow the upper stopband of the BPF.…”

Section: Introductionmentioning

confidence: 99%

Postwall-Slotline Stepped Impedance Resonator and Its Application to Bandpass Filter with Improved Upper Stopband

Yang

Wang

et al. 2022

Electronics

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In this letter, a postwall-slotline stepped impedance resonator (PWS-SIR) is proposed and applied to a bandpass filter (BPF) with a wide stopband. The proposed PWS-SIR-BPF comprises three U-shaped PWS-SIRs and two microstrip-slot feeding transitions. A PWS has a much lower impendence which a conventional slotline (CSL) cannot reach, so a much smaller impendence ratio of the PWS-SIR can be achieved. Consequently, a wider stopband simultaneously can be realized for the proposed filter. The designed PWS-SIR-BPF, as well as a CSL-BPF, have been fabricated, measured, and compared to verify the features of the PWS-SIR. The measured results are consistent with the simulation ones. The PWS-SIR is 7.3 mm (0.22λ0) long, 67% of 11.1 mm (0.34λ0) of the CSL resonator. The first spurious resonance frequency of the PWS-SIR-BPF is extended from 9.8 GHz (2f0) to 23 GHz (4.7f0).

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“…Many researchers have increased the power-handling capability of superconducting band-pass filters (BPFs) by improving the filter structure. Such improvements have been reported for sliced microstrip Manuscript line resonators [3], [4], for microstrip-disk resonators [5]- [8], and for HTS thick film resonators [9]- [11]. Bulk superconducting GdBa 2 Cu 3 O y (GdBCO) fabricated by using a modified quench and melt growth (QMG) method [12] have a surface resistance (R s ), that is low enough to be used in microwave filters [13].…”

Section: Introductionmentioning

confidence: 99%

Power-Handling Capability of Superconducting Filters Using Disk- and Ring-Type Bulk Resonators

Kato

Saito

Tsurui

et al. 2015

IEEE Trans. Appl. Supercond.

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The critical current of a bulk resonator is larger than that of a thin film resonator. Therefore, we investigated a transmitting filter that uses high temperature bulk superconducting resonators to increase their power-handling capability. We designed disk-and ring-type 3-pole bulk superconducting resonator filters using MW-studio software and calculated the current density distribution. From the simulation, the power-handling capability of the disk-type bulk filter was found to be approximately 1.3 times that of the ring-type bulk filter. These filters were fabricated and tested. The frequency response and the power-handling capability were measured at 20 K. The filters showed band-pass properties. The power-handling capability of the disk-type bulk filter was 41.7 W and that of the ring-type bulk filter was 26.6 W. Therefore, the disk-type filter had an approximately 1.6 times higher power-handling capability than did the ring-type filter.

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A closed slot-line resonator filter

Cited by 10 publications

References 4 publications

Using a Re-Entrant Microwave Resonator to Measure and Model the Dielectric Breakdown Electric Field of Gases

Using a Re-Entrant Microwave Resonator to Measure and Model the Dielectric Breakdown Electric Field of Gases

Postwall-Slotline Stepped Impedance Resonator and Its Application to Bandpass Filter with Improved Upper Stopband

Power-Handling Capability of Superconducting Filters Using Disk- and Ring-Type Bulk Resonators

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