Subterahertz Filtering Six-Port Junction

Chen, Xun1,2; Salek, Milan2; Zhang, Qingfeng1; Wang, Yi2

2022-07-01

10.1109/TMTT.2022.3186322

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES   Impact Factor & Quartile

0018-9480

1557-9670

This article presents a D-band E-plane 90 degrees filtering coupler and a D-band six-port junction (SPJ), both working at 150 GHz. The coupler is formed by ten resonators, having a fourth-order Chebyshev response. Two of the couplers were combined with a 90 degrees 3-dB branch-line coupler to build the filtering SPJ with 20 resonators in total. Inheriting from the filtering coupler, the SPJ also has a fourth-order Chebyshev response. A coupling matrix (CM) consisting of both resonant and nonresonant nodes, based on the coupling topology, was constructed to predict the theoretical responses. Guided by this CM, the coupler and the SPJ were designed and modeled. In addition, two silicon-based absorber chips were designed and implemented as two matched loads in the filtering SPJ. The SPJ was optimized, fabricated, and tested. The center frequency of the SPJ is 150 GHz and the bandwidthis 4 GHz. Simulation shows 0.5-0.7-dB insertion loss at 150 GHz and a maximum 3 degrees phase error in the working band. The measurement gives the same center frequency andbandwidth. The response shows 0.7-2.0-dB insertion loss at 150 GHz and a maximum 15 degrees phase error in the working band.

Coupling matrix (CM) filtering coupler nonresonant structure six-port junction (SPJ) subterahertz

SCI ; EI

English

First ; Corresponding

U.K. Engineering and Physical Sciences Research Council (EPSRC)["EP/P020615/1","EP/S013113/1"] ; Guangdong Basic and Applied Basic Research Foundation[2021B1515120029] ; Shenzhen Science, Technology and Innovation Commission (STIC) Funds[JCYJ20190809115419425]

Engineering

Engineering, Electrical & Electronic

WOS:000826070900001

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

20222912379639

Directional couplers ; Insertion losses ; Matrix algebra ; Resonators

Waveguides:714.3 ; Algebra:921.1 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4

ENGINEERING

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
2.Univ Birmingham, Sch Elect Elect & Syst Engn, Birmingham B15 2TT, W Midlands, England

Chen, Xun,Salek, Milan,Zhang, Qingfeng,et al. Subterahertz Filtering Six-Port Junction[J]. IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES,2022,70(8):3877-3885.

Chen, Xun,Salek, Milan,Zhang, Qingfeng,&Wang, Yi.(2022).Subterahertz Filtering Six-Port Junction.IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES,70(8),3877-3885.

Chen, Xun,et al."Subterahertz Filtering Six-Port Junction".IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES 70.8(2022):3877-3885.