Lead-strontium-titanate varactor-tuned CPW bandstop filter on liquid crystal polymer substrates

Young Hoon Chun; Roman Keller; Jia-Sheng Hong; Charalampos Fragkiadakis; Robert V. Wright; Paul B. Kirby

doi:10.1109/EUMC.2009.5296397

Lead-strontium-titanate varactor-tuned CPW bandstop filter on liquid crystal polymer substrates

Young Hoon Chun, Roman Keller, Jia-Sheng Hong, Charalampos Fragkiadakis, Robert V. Wright, Paul B. Kirby

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

This paper presents an investigation of a tunable coplanar waveguide (CPW) bandstop filter with slotted ground structure. Spurious responses resulting from the shapes of resonator and the tuning position have been investigated by EM simulations. As a tuning element, Lead- Strontium- Titanate (PST) varactor chip is deployed. Also, in order to reduce required elements and unwanted spurious, LCP substrates are used as multi-layered laminates. A 2-pole tunable bandstop filter of this type is measured at the center frequency from 905 to 1040 MHz and its maximum rejection is more than 25 dB at the stopband with a wide passband response.

Original language	English
Title of host publication	2009 European Microwave Conference (EuMC)
Publisher	IEEE
Pages	1373-1376
Number of pages	4
ISBN (Print)	9781424447480
DOIs	https://doi.org/10.1109/EUMC.2009.5296397
Publication status	Published - 30 Oct 2009
Event	39th European Microwave Conference 2009 - Rome, Italy Duration: 28 Sept 2009 → 2 Oct 2009 Conference number: EuMC 2009

Conference

Conference	39th European Microwave Conference 2009
Country/Territory	Italy
City	Rome
Period	28/09/09 → 2/10/09

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10.1109/EUMC.2009.5296397

Cite this

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title = "Lead-strontium-titanate varactor-tuned CPW bandstop filter on liquid crystal polymer substrates",

abstract = "This paper presents an investigation of a tunable coplanar waveguide (CPW) bandstop filter with slotted ground structure. Spurious responses resulting from the shapes of resonator and the tuning position have been investigated by EM simulations. As a tuning element, Lead- Strontium- Titanate (PST) varactor chip is deployed. Also, in order to reduce required elements and unwanted spurious, LCP substrates are used as multi-layered laminates. A 2-pole tunable bandstop filter of this type is measured at the center frequency from 905 to 1040 MHz and its maximum rejection is more than 25 dB at the stopband with a wide passband response.",

author = "Chun, {Young Hoon} and Roman Keller and Jia-Sheng Hong and Charalampos Fragkiadakis and Wright, {Robert V.} and Kirby, {Paul B.}",

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AU - Chun, Young Hoon

AU - Keller, Roman

AU - Hong, Jia-Sheng

AU - Fragkiadakis, Charalampos

AU - Wright, Robert V.

AU - Kirby, Paul B.

N1 - Conference code: EuMC 2009

PY - 2009/10/30

Y1 - 2009/10/30

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AB - This paper presents an investigation of a tunable coplanar waveguide (CPW) bandstop filter with slotted ground structure. Spurious responses resulting from the shapes of resonator and the tuning position have been investigated by EM simulations. As a tuning element, Lead- Strontium- Titanate (PST) varactor chip is deployed. Also, in order to reduce required elements and unwanted spurious, LCP substrates are used as multi-layered laminates. A 2-pole tunable bandstop filter of this type is measured at the center frequency from 905 to 1040 MHz and its maximum rejection is more than 25 dB at the stopband with a wide passband response.

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DO - 10.1109/EUMC.2009.5296397

M3 - Conference contribution

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T2 - 39th European Microwave Conference 2009

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ER -

Lead-strontium-titanate varactor-tuned CPW bandstop filter on liquid crystal polymer substrates

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