Tunable 500–1200-MHz dual-band and wide bandwidth notch filters using RF transformers

CH Ko, A Tran, GM Rebeiz - IEEE Transactions on Microwave …, 2015 - ieeexplore.ieee.org
This paper presents a novel tunable dual-band bandstop filter based on doubly tuned RF
transformers. This design results in two distinct notch frequencies in a single resonator using …

Compact microstrip Wideband Band Stop Filter with folded stubs to increase coupling

A Rajput, M Chauhan… - 2020 URSI Regional …, 2020 - ieeexplore.ieee.org
This work presents a new type of wide band stop filter (BSF). The proposed filter topology
consists of folded stubs, which controls band stop range. The filter characteristics can be …

A dual-band transformer-coupled notch filter mixer for 2.45-/5.2-GHz WLAN application

YT Wong, H Ramiah, N Vitee - Circuits, Systems, and Signal Processing, 2021 - Springer
This paper presents a dual-band down-conversion mixer with image rejection feature using
transformer-coupled notch filter for 2.45-/5.2-GHz WLAN application. A single center-tapped …

[图书][B] Tunable RF Front-End Circuits for Advanced Communication Systems

CH Ko - 2014 - search.proquest.com
This thesis presents tunable RF front-end circuits for advanced communication systems by
using packaged RF MEMS (Micro-Electro-Mechanical-Systems) devices or varactor diodes …

Compact and Sharp-rejection Dual-band Bandstop Filter Based on Transversal Signal-interaction Concept.

LL Qiu, QX Chu - PIERS Proceedings, 2014 - search.ebscohost.com
A compact dual-band bandstop filter with sharp-rejection using transversal signal-
interaction, consisting of a transmission line path and a cascaded coupled line path, is …

Direct synthesis procedure for sub‐harmonic stub band‐pass and band‐stop filters

T Stander, S Sinha - Microwave and Optical Technology …, 2013 - Wiley Online Library
A non‐iterative synthesis procedure for sub‐harmonic stub (SHS) band‐pass and band‐stop
filters is presented. The method ensures better agreement between the synthesized filter …