A low-loss and compact size analog tunable filter on flexible organic substrate

This paper presents the design, fabrication and measurements of a low-loss and compact size 4-pole tunable filter based on open-loop resonators and operating in the X-band. This filter is fabricated on a flexible organic substrate and ferroelectric sapphire chips are mounted on it and used as tuning...

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Bibliographic Details
Published in2010 Asia-Pacific Microwave Conference pp. 155 - 158
Main Authors Lacroix, B, Courrèges, S, Kwang Choi, Yongqiang Wang, Hunt, A T, Papapolymerou, J
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2010
Subjects
Apertures
Capacitors
Couplings
ferroelectric capacitors
Insertion loss
Loss measurement
microstrip resonators
Resonant frequency
Tunable filters
Tuning
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Summary:This paper presents the design, fabrication and measurements of a low-loss and compact size 4-pole tunable filter based on open-loop resonators and operating in the X-band. This filter is fabricated on a flexible organic substrate and ferroelectric sapphire chips are mounted on it and used as tuning elements. This filter has a fractional bandwidth of 6-10% and an analog tuning range of 12.6%. Insertion loss of 5.4 dB to 1.8 dB is achieved while return loss is better than 10 dB on the covered frequency range. The presented topology allows a footprint size reduction of 50% compared to conventional open-loop resonator filters.
ISBN:9781424475902
1424475902
ISSN:2165-4727
2165-4743