Paper Info
Title
Cross-coupled open-loop resonator bandpass filter with independently tunable center frequency and bandwidth
Abstract
This paper presents a twofold tunable cross-coupled open-loop resonator bandpass filter to simultaneously and independently control the center frequency and the bandwidth. Frequency selectivity is increased by introducing two transmission zeros via cross coupled resonators. Tunability is achieved by using thin film barium strontium titanate (BST) varactors. The structure is applicable in future seamless and band less cognitive radio systems. The center frequency is adjusted by varactors which are loading the open-loop resonators, while coupling varactors between the resonators enable the control of bandwidth. The proposed filter structure is designed for a center frequency range from 1.5 GHz to 1.75 GHz with a constant bandwidth of 100 MHz and a tunable bandwidth between 70 MHz and 180 MHz at a fixed center frequency of 1.625 GHz. The functionality of the design is experimentally validated.
Year
DOI
Venue
2018
10.1109/RWS.2018.8304944
2018 IEEE Radio and Wireless Symposium (RWS)
Keywords
Field
DocType
filters,tunable circuits and devices,ferroelectric devices,transmission lines
Coupling,Band-pass filter,Resonator,Electric power transmission,Bandwidth (signal processing),Center frequency,Thin film,Optoelectronics,Materials science,Cognitive radio
Conference
ISSN
ISBN
Citations 
2164-2958
978-1-5386-0711-4
0
PageRank 
References 
Authors
0.34
0
6
Name
Order
Citations
PageRank
Christian Schuster101.01
Ran Hu2101.59
Alex Wiens300.34
Matthias Maasch400.68
Rolf Jakoby51711.46
Holger Maune601.35