A Tunable Three-Pole 1.5-2.2-GHz Bandpass Filter With Bandwidth and Transmission Zero Control

This paper presents a three-pole tunable combline bandpass filter with center frequency, bandwidth, and zero control. The filter is designed on a Duroid substrate with ε r =10.2 and h =25 mil . A frequency range of 1.5-2.2 GHz with a 1-dB bandwidth tuning from 50 to 170 MHz (2.2%-11.2% fractional ba...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2011-11, Vol.59 (11), p.2872-2878
Main Authors: Yi-Chyun Chiou, Rebeiz, G. M.
Format: Article
Language:English
Subjects:
Applied sciences
Band pass filters
Bandpass filters
Bandwidth
Bandwidth tunable filter
Circuit properties
combline filter
Compressing
Compression tests
Couplings
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Filtering theory
Frequency filters
Frequency measurement
Frequency ranges
Intermodulation
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Microwaves
Resonant frequency
transmission zero control
tunable filter
Tuning
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper presents a three-pole tunable combline bandpass filter with center frequency, bandwidth, and zero control. The filter is designed on a Duroid substrate with ε r =10.2 and h =25 mil . A frequency range of 1.5-2.2 GHz with a 1-dB bandwidth tuning from 50 to 170 MHz (2.2%-11.2% fractional bandwidth) is achieved. The transmission zero can also be controlled, and a zero location of 1.37-1.64 GHz is demonstrated at center frequency fo of 2.05 GHz. The measured third-order intermodulation intercept point and 1-dB power compression point at midband (1.85 GHz) and a bandwidth of 110 MHz are >;15 and 8 dBm, respectively. To our knowledge, this is the first three-pole combline tunable bandpass filter with center frequency, bandwidth, and transmission zero control.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2011.2164619