Cavity Resonators Do the Trick: A Packaged Substrate Integrated Waveguide, Dual-Band Filter

Dhwaj, Kirti; Li, Xiaoqiang; Shen, Zhi; Qin, Shihan

doi:10.1109/mmm.2015.2487920

Cited by 25 publications

(24 citation statements)

References 4 publications

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“…It is the potential solution over microstrip due to the merits of simple fabrication, larger Q U , compact size, and higher power handling capability 6 . Many methods have been explored on SIW to make DBBPFs 7‐12 . As discussed in Reference 12, dual‐band filter is constructed by using TE 101 and TE 201 modes of the substrate integrated rectangular cavities (SIRCs) within the frequency ratio range of (1.15‐1.45).…”

Section: Introductionmentioning

confidence: 99%

Widely separated dual‐band half‐mode SIW bandpass filter

Pelluri

Kartikeyan

2020

Int J RF Microw Comput Aided Eng

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A novel half‐mode substrate integrated waveguide (HMSIW) based dual‐band bandpass filter (DBBPF) is proposed. Back to back connected two defected ground structure (DGS) resonators on the top layer of HMSIW cavity constitute the passband with two transmission zeros (TZs) at a lower frequency. The higher modes TE301 and TE302 of HMSIW cavity give the passband response at higher frequency using the mode shifting technique with slot perturbation. The source‐load coupling has been used to create finite frequency TZs to improve the selectivity of the second passband. Therefore, the proposed filter gives two widely separated passbands, center frequencies (CFs) at 5.83 and 18.1 GHz with an attenuation of greater than 10 dB between the passbands. The synthesized filter is fabricated using a low‐cost single layer PCB process, and the measured S‐parameters are almost mimic the EM‐simulation results.

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Section: Introductionmentioning

confidence: 99%

Widely separated dual‐band half‐mode SIW bandpass filter

Pelluri

Kartikeyan

2020

Int J RF Microw Comput Aided Eng

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“…Substrate integrated waveguide (SIW) technology has widely applied in bandpass filter (BPF) designs for its easy-integration, low-cost and high-quality factor [1,2,3,4,5,6]. Especially SIW has been attractive to design multiband BPFs [7,8,9,10,11]. In general, the design method is combining several single-band BPFs at different frequencies to form the multi-band response [12,13,14], or cascading bandstop structures to divide a wide passband into multiple passbands [15,16].…”

Section: Introductionmentioning

confidence: 99%

A filter design method based on higher-order modes of fan-shaped half-mode substrate integrated waveguide resonator

Zhang

Cheng

Liu

et al. 2019

IEICE Electron. Express

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In this paper, a novel 22.5°fan-shaped half-mode substrate integrated waveguide resonator (FSHMSIWR) is presented firstly. Based on it, a filter design method by suppression or utilization of higher-order modes is proposed. When feeding on magnetic wall, the fundamental mode (TM 101) is excited to generate passband response, while the higherorder modes (TM 201 and TM 301) can be suppressed. A pair of complementary split-ring resonators (CSRRs) are introduced to strengthen the out-band rejection. Then a single-band bandpass filter (BPF) with ultrawide and deep stopband is realized. When feeding on electric wall, the higher-order modes can be well excited, which provides flexibility to realize multi-band BPFs only by changing the feeding position. As verification, a single-band BPF and a tri-band BPF with source-load coupling are designed and fabricated. The measured results show good agreement with the simulated ones.

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“…Lots of approaches have been developed. Two different transmission paths can be constructed to design dual-band BPFs with each transmission path for one passband [1][2][3][4][5][6][7][8]. Recently, the approach of using non-resonating node to connect resonators with different frequencies is proposed and applied to dual-/multi-band BPF designs [9,10].…”

Section: Introductionmentioning

confidence: 99%

Millimetre‐wave low‐temperature co‐fired ceramic bandpass filter with independently controllable dual passbands

Chen

Qin

et al. 2017

IET Microwaves, Antennas & Propagation

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This study presents a detailed investigation on the frequency properties of the stub‐loaded stepped‐impedance resonator (SIR). For the first time, the frequency controllability of the third and fifth harmonic resonant frequencies (f3 and f5) of the SIR under different ratios of impedance and electric length is subjected to a complete theoretical analysis. It can be found that there is a length ratio which makes f3 and the voltage‐null point at f3 never be affected by the change of the impedance ratio. Furthermore, the stub loaded at this voltage‐null point also has no effect on f3. These features are successfully applicable to realise independent frequency control for dual‐band bandpass filters (BPFs). In this situation, a new coupling path through the loaded stub can be constructed only for f5, and the coupling coefficients for the two bands can be individually varied. Accordingly, both the operational frequencies and bandwidths of the two bands can be separately adjusted. For demonstration, an independently controllable dual‐band BPF operating at 27.5/33 GHz is designed and fabricated for millimetre‐wave wireless applications. Good accordance is achieved between the simulated and measured results.

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Cavity Resonators Do the Trick: A Packaged Substrate Integrated Waveguide, Dual-Band Filter

Cited by 25 publications

References 4 publications

Widely separated dual‐band half‐mode SIW bandpass filter

Widely separated dual‐band half‐mode SIW bandpass filter

A filter design method based on higher-order modes of fan-shaped half-mode substrate integrated waveguide resonator

Millimetre‐wave low‐temperature co‐fired ceramic bandpass filter with independently controllable dual passbands

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