NDLI: Tunable channelised bandstop passive filter using reconfigurable phase shifter

Content Provider	IET Digital Library
Author	Lababidi, Raafat Shami, Maryam Al Roy, Marc Le Jeune, Denis Le Khoder, Khaled Pérennec, André
Abstract	A novel tunable channelised two-branches passive bandstop filter using a reconfigurable parallel-coupled-line-based phase shifter (PS) is presented. The filter topology uses the signal destructive principle and aims to protect the receiver against an unwanted interference signal received by the antenna. The global filter topology contains two branches, each of which has a different function. The bandpass tunable branch selects the frequency to be rejected while the reconfigurable PS plays the signal inverter role. The simultaneous tunabilities of both bandpass and PS branches are ensured by using identical varactor diodes and features 550–700 MHz tuning range. In addition to having a constant and relatively high rejection level over all the tuning range and low insertion loss in the passband area, the filter guaranties ultra-low power consumption. Moreover, synthesis equations are proposed and used to illustrate the operating principle, and finally validated by comparing simulations results to measurements.
Starting Page	591
Ending Page	596
Page Count	6
ISSN	17518725
Volume Number	13
e-ISSN	17518733
Issue Number	Issue 5, Apr (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/13/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2018.5430
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2018-09-17
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Analogue Circuit Band-stop Filter Bandtop Passive Filter Electrical/electronic Equipment Energy Utilisation Frequency 550.0 MHz to 700.0 MHz Global Filter Topology Low Power Electronics Microwave Circuit And Device Passive Bandtop Filter Passive Filter Passive Network Reconfigurable Parallel-coupled-line-based Phase Shifter UHF Filter UHF Phase Shifters Ultra-low Power Consumption Unwanted Interference Signal Varactor Diode Varactors Waveguide And Microwave Transmission Line Component
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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