NDLI: SICL-based wideband crossover with low phase imbalance and group delay

Content Provider	IET Digital Library
Author	Krishna, Idury Satya Mukherjee, Soumava
Abstract	This study presents a wideband crossover developed using substrate integrated coaxial line (SICL) technology. The proposed SICL-based crossover isolates the two physically overlapping channels by routing the signal in a middle conductor of SICL through the transmission line created in the top and bottom ground plane using a metalised blind via. An equivalent model is proposed to study the role of substrate height in the proposed crossover. The design methodology is affirmed by fabricating and testing the experimental prototype. The measured results show isolation between channels are more than 19 dB with better than 18 dB return loss and less than 1.2 dB insertion loss from 0.2 to 20 GHz. Owing to the non-dispersive nature of SICL line and simplistic design technique with minimal discontinuities the designed crossover demonstrates low peak-to-peak group delay variation, less than 0.04 ns over the entire bandwidth. The proposed crossover due to its symmetric design provides low path difference of less than ± 2.45 ° up to 20 GHz ( ≤ ± 1 ° up to 10 GHz) without any additional phase compensation technique. Utilization of electromagnetically robust self-packaged components designed in SICL technology provides superior front-end communication system within a small footprint.
Starting Page	1355
Ending Page	1360
Page Count	6
ISSN	17518725
Volume Number	14
e-ISSN	17518733
Issue Number	Issue 12, Oct (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/14/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2019.1008
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2020-06-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Coaxial Cables Electromagnetic Robust Self-packaged Component Frequency 0.2 GHz to 20.0 GHz Front-end Communication System Ground Plane Low Path Difference Low Phase Imbalance Metalised Blind Via Nondispersive Nature Overlapping Channel Peak-to-peak Group Delay Variation Phase Compensation SICL Technology SICL-based Crossover SICL-based Wideband Crossover Substrate Height Substrate Integrated Coaxial Line Symmetric Design Transmission Line Transmission Line Theory Waveguide And Coaxial Cable System
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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