Tunable slotted ground structured bandstop filter with BST varactors

YH Chun; JS Hong; P Bao; Timothy Jackson; Michael Lancaster

doi:10.1049/iet-map.2008.0308

Tunable slotted ground structured bandstop filter with BST varactors

YH Chun, JS Hong, P Bao, Timothy Jackson, Michael Lancaster

Electronic, Electrical and Systems Engineering

Research output: Contribution to journal › Article

20 Citations (Scopus)

Abstract

This paper presents an investigation of a tunable bandstop filter (BSF) using slotted ground structure. A kind of open loop slot resonator is used for the bandstop response and its characteristics according to various dimensions are considered to decide a proper shape for the final design. A barium-strontium-titanate (BST) varactor chip is deployed to tune each resonator and its location is determined by electromagnetic simulation for an optimum frequency tuning. A three-pole tunable BSF of this type is measured at the centre frequency from 4.5 to 5.5 GHz and its rejection is more than 20 dB at the stop band while the insertion loss at the pass band is less than 1.5 dB.

Original language	English
Pages (from-to)	870-876
Number of pages	7
Journal	IET Microwaves Antennas & Propagation
Volume	3
Issue number	5
DOIs	https://doi.org/10.1049/iet-map.2008.0308
Publication status	Published - 1 Aug 2009

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10.1049/iet-map.2008.0308

Advanced Microwave Devices for Frequency-Agile Applications
Lancaster, M. & Jackson, T.
Engineering & Physical Science Research Council
28/11/05 → 27/05/09
Project: Research Councils

Cite this

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title = "Tunable slotted ground structured bandstop filter with BST varactors",

abstract = "This paper presents an investigation of a tunable bandstop filter (BSF) using slotted ground structure. A kind of open loop slot resonator is used for the bandstop response and its characteristics according to various dimensions are considered to decide a proper shape for the final design. A barium-strontium-titanate (BST) varactor chip is deployed to tune each resonator and its location is determined by electromagnetic simulation for an optimum frequency tuning. A three-pole tunable BSF of this type is measured at the centre frequency from 4.5 to 5.5 GHz and its rejection is more than 20 dB at the stop band while the insertion loss at the pass band is less than 1.5 dB.",

author = "YH Chun and JS Hong and P Bao and Timothy Jackson and Michael Lancaster",

year = "2009",

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doi = "10.1049/iet-map.2008.0308",

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AU - Chun, YH

AU - Hong, JS

AU - Bao, P

AU - Jackson, Timothy

AU - Lancaster, Michael

PY - 2009/8/1

Y1 - 2009/8/1

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AB - This paper presents an investigation of a tunable bandstop filter (BSF) using slotted ground structure. A kind of open loop slot resonator is used for the bandstop response and its characteristics according to various dimensions are considered to decide a proper shape for the final design. A barium-strontium-titanate (BST) varactor chip is deployed to tune each resonator and its location is determined by electromagnetic simulation for an optimum frequency tuning. A three-pole tunable BSF of this type is measured at the centre frequency from 4.5 to 5.5 GHz and its rejection is more than 20 dB at the stop band while the insertion loss at the pass band is less than 1.5 dB.

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DO - 10.1049/iet-map.2008.0308

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JO - IET Microwaves Antennas & Propagation

JF - IET Microwaves Antennas & Propagation

IS - 5

ER -

Tunable slotted ground structured bandstop filter with BST varactors

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Advanced Microwave Devices for Frequency-Agile Applications

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