Design of a Superconducting Ultra-Wideband (UWB) Bandpass Filter With Sharp Rejection Skirts and Miniaturized Size

Shang, Zhaojiang; Guo, Xubo; Cao, Bisong; Wei, Bin; Zhang, Xiaoping; Heng, Yong; Suo, Guannan; Song, Xiaoke

doi:10.1109/lmwc.2013.2239633

Cited by 50 publications

(36 citation statements)

References 11 publications

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“…Also, f z2 tends to shift downwards slightly more than f z1 . In addition, when W 1 varies from 0.3 to 0.5 mm, the fourth mode, f m4 , decreases significantly, while it has a little effect on the other modes and TZs [9]. Hence, the position of the fourth resonate mode can be flexibly controlled by the dimensions of stub 1.…”

Section: Characteristics Of the Proposed Mmrmentioning

confidence: 96%

“…Meanwhile, 1-dB insertion loss is in the range of 3.19-10.5 GHz in simulation. 30-dB bandwidth covers 7.78 GHz, so sharp factor can be calculated as fraction of 3-dB bandwidth to 30-dB bandwidth, i.e., 0.956, better than [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. In simulation, return loss in whole bandwidth is better than 14.86 dB.…”

Section: Simulation and Measurement Of The Proposed Uwb Bpfmentioning

confidence: 99%

“…On the other hand, traditional synthesis design was systematically developed under the assumption of narrow passband. Therefore, the ultra-wide bandwidth specified by Federal Communications Commission (FCC) in 2002 creates a tremendous challenge in designing UWB BPF [2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…In [3][4][5], a quadruple-mode UWB BPF with wide upper stopband is proposed, but these filters suffer from poor selectivity. Later on, several quintuple-mode MMR-based UWB filters with varied configuration are proposed to improve selectivity, in-band and out-of-band performance [6][7][8][9]. In [6], upper stop-band is extended to 27 GHz, and [7] tries to fully cover UWB passband, but selectivity is still an issue in these filters.…”

Section: Introductionmentioning

confidence: 99%

“…Selectivity and upper stop-band are improved in [8], but in-band insertion loss is 1.4 dB, and filter's size is large. [9] proposes UWB MMR-based which can have insertion loss less than 0.09 dB, but upper stop-band is narrow. In [10], a novel MMR structure is proposed for improving out-of-band rejection with two transmission zeros in upper stopband, but the drawback is roll-off at the lower and upper bands, and stopband is also narrow.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A Novel Compact Size Uwb Bandpass Filter With Sharp Rejection Skirt and Wide Upper-Stopband Based on Multiple-Mode-Resonator

Borhani¹,

Honarvar²

2013

PIER C

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Abstract-In this paper, a novel ultra-wideband (UWB) bandpass filter (BPF) based on multiple-mode resonator (MMR) is presented. The structure of the proposed MMR constructed by a modified triplemode stepped-impedance resonator (SIR) loaded with a T-shape stub. This stub-loaded resonator can generate two more resonate modes and two transmission zeros (TZs) simultaneously. Five resonate modes of the proposed MMR are roughly allocated in the UWB pass band, as well as two TZs at the lower and upper cut-off frequencies of the passband, leading to sharp roll-off. Using aperture-backed interdigitalcoupled lines for feeding, passband is realized, first harmonic resonate mode (sixth mode) suppressed by first TZ of the interdigital-coupled lines, and upper stopband extended. Resonant modes and TZs are discussed together. Finally, the proposed filter is fabricated and measured, and predicted results verified in measurement.

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Section: Characteristics Of the Proposed Mmrmentioning

confidence: 96%

Section: Simulation and Measurement Of The Proposed Uwb Bpfmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Novel Compact Size Uwb Bandpass Filter With Sharp Rejection Skirt and Wide Upper-Stopband Based on Multiple-Mode-Resonator

Borhani¹,

Honarvar²

2013

PIER C

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Wideband Balanced Filters on Slotline Resonator With Intrinsic Common‐mode Rejection

Martiacuten¹,

Li²,

Hong³

et al. 2018

Balanced Microwave Filters

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Design of a moderate-wideband superconducting filter with modified stub structure

Guo

Heng

et al. 2017

Int J RF Microw Comput Aided Eng

Self Cite

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This paper presents a design method for moderate‐wideband filters with modified λ/2 stub resonators mid‐tapped by λ/4 connecting lines which act as admittance inverters. The modified tapped‐stubs avoid low characteristic impedances of the stubs which results in a very wide strip‐width and a large circuit size. An example filter at 2250 MHz with a fractional bandwidth (FBW) of 45% is successfully designed with this method and fabricated. It has a compact size of 26.5 mm × 10.5 mm on a YBCO/LaAlO3 superconducting wafer. The measurements show good response and match well with the simulations.

show abstract

Design of a Superconducting Ultra-Wideband (UWB) Bandpass Filter With Sharp Rejection Skirts and Miniaturized Size

Cited by 50 publications

References 11 publications

A Novel Compact Size Uwb Bandpass Filter With Sharp Rejection Skirt and Wide Upper-Stopband Based on Multiple-Mode-Resonator

A Novel Compact Size Uwb Bandpass Filter With Sharp Rejection Skirt and Wide Upper-Stopband Based on Multiple-Mode-Resonator

Wideband Balanced Filters on Slotline Resonator With Intrinsic Common‐mode Rejection

Design of a moderate-wideband superconducting filter with modified stub structure

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