Substrate-Integrated Waveguide Triple-Band Bandpass Filters Using Triple-Mode Cavities

Xie, Haowei; Zhou, Kang; Zhou, Chi; Wu, Wen

doi:10.1109/tmtt.2018.2833462

Cited by 54 publications

(66 citation statements)

References 33 publications

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“…The proposed filter has implemented ESIW technology to act as waveguides embedded in a planar circuit. In addition, the filter design used the exact same standard known method of invertors and resonators for rectangular waveguide . In this case, the transition of ESIW filters is required to be linked to the transmission line of the microstrip, since the impedance of the microstrip is higher than the impedance of the ESIW .…”

Section: Filter Designmentioning

confidence: 99%

“…Bandpass filter with a higher quality factor ESIW has recently been introduced using ESIW structure in Reference and triple‐band SIW filter using triple‐mode cavities in Reference The filter is designed to operate with a bandwidth of 500 MHz at the center frequency of 19.5 GHz. Many researchers subsequently followed the same trend in designing filters via ESIW to increase the quality factor .…”

Section: Introductionmentioning

confidence: 99%

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Single coupled cavity filter design with dielectric resonators posts for millimeter‐wave applications

Khanjar

Djerafi

2019

Int J RF Microw Comput Aided Eng

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In this work, a single coupled cavity has presented for millimeter-wave applications. The cavity is modeled to study the effect on the quality factor by adding cylindrical posts to coupled cavity resonator. This cavity model demonstrates a higher quality factor result and better performance compare to empty substrate integrated waveguide (ESIW) filter. The concept of enhancing the quality factor by adding posts is achieved. Based on this concept, the coupled cavity and bandpass filter are presented to show the feasibility of the fabrication process for building an ESIW filter where cylindrical posts is placed in middle on the planar substrate. The introduced cavity offers very good performance around (1%) fractal bandwidth at 24.7 GHz center frequency with Q-factor of 2236. A cavity prototype is fabricated and measured where measurements agree well with simulation. K E Y W O R D Scoupled cavities, empty substrate integrated waveguide, quality factor, resonators dielectric posts

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Section: Filter Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Single coupled cavity filter design with dielectric resonators posts for millimeter‐wave applications

Khanjar

Djerafi

2019

Int J RF Microw Comput Aided Eng

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“…The SIW technology delivers a suitable engineering and research platform to design and develop high performance microwave filters of single as well as multiple passbands . SIW resonators are significantly utilized to realize different microwave bandpass filters, either by manipulating the waveguide cavity or by introducing external circuitry, such as split ring resonators (SRRs) to the cavity . Various single and multiple bandpass filters are proposed based on SIW cavity.…”

Section: Introductionmentioning

confidence: 99%

“…2,3 SIW resonators are significantly utilized to realize different microwave bandpass filters, either by manipulating the waveguide cavity or by introducing external circuitry, such as split ring resonators (SRRs) to the cavity. [4][5][6][7][8] Various single and multiple bandpass filters are proposed based on SIW cavity. A combline filter based on SIW structure using coplanar waveguide (CPW) feedline generated single passband and showed significant out of band response but compromised the selectivity of the passband.…”

Section: Introductionmentioning

confidence: 99%

Dual band bandpass filter based on substrate integrated waveguide loaded with mushroom resonators

Chaudhury

Awasthi

Singh

2020

Micro & Optical Tech Letters

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This article presents a dual band bandpass filter by loading two cascaded mushroom resonators inside the cavity of a rectangular substrate integrated waveguide (SIW). The passbands are generated by exciting TE101 and TE201 modes of dual mushroom structures loaded inside SIW cavity. The fundamental mode, that is, TE101 of the entire filter structure is utilized to create the first passband and the next higher order mode, that is, TE201 of the filter structure is employed for the generation of second passband. Due to the incorporation of mushroom resonators into SIW, which are composite right/left handed transmission lines, the anticipated frequency response represents highly selective passbands with three transmission zeros (TZs) and an improved out‐of‐band response beyond the second passband. The effects of some structural parameters of the filter on the control over coupling parameters (k101 and k201) and quality factor (Q) are studied. This modified SIW based dual bandpass filter is fabricated and measured to verify two passbands centered at 2.25 and 4.1 GHz with 12.9% and 10.8% fractional bandwidth (FBW) and minimum insertion loss of 0.86 dB and 1.6 dB, respectively. Mobile satellite communications, weather radar systems and Wi‐Fi technology are the actual fields where such bandpass filters can be thoroughly applied.

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“…[12][13][14] These methods, however, are usually difficult to be transplanted to implement SIW multiband filters according to the authors' knowledge. Only few solutions can be found for SIW triple-band BPFs 12,[15][16][17][18][19] and a quad-band one, 19 and no solution has been reported so far for SIW more band BPFs due to the difficulties in simultaneously controlling the frequencies and the couplings of multiple passbands, rendering the great necessity to develop novel realization methods for SIW multiband filters.…”

Section: Introductionmentioning

confidence: 99%

SIW sext‐band bandpass filter based on split‐type triple‐band symmetrical frequency responses

Zhou

2018

Int J RF Microw Comput Aided Eng

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Substrate‐integrated waveguide (SIW) sext‐band bandpass filter (BPF) composed of two dual‐mode cavities coupled with multiple single‐mode ones is synthesized and designed for the first time by combining split‐type triple‐band symmetrical frequency responses for two virtual wide passbands dominated by TE101 and TE201 modes in SIW rectangular cavities. By applying our previously proposed dual‐mode frequency and coupling controlling techniques, the center frequencies and fractional bandwidths of the two virtual passbands can be allocated flexibly. An experimental prototype with the two virtual wide bands centered at 11.993 and 14.336 GHz is synthesized, designed, fabricated, and tested to demonstrate and validate the collaborative design concept, showing excellent agreement between the measured and simulation results.

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Substrate-Integrated Waveguide Triple-Band Bandpass Filters Using Triple-Mode Cavities

Cited by 54 publications

References 33 publications

Single coupled cavity filter design with dielectric resonators posts for millimeter‐wave applications

Single coupled cavity filter design with dielectric resonators posts for millimeter‐wave applications

Dual band bandpass filter based on substrate integrated waveguide loaded with mushroom resonators

SIW sext‐band bandpass filter based on split‐type triple‐band symmetrical frequency responses

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