Tunable microstrip quasi-elliptic function bandpass filters

W. Tang; J.-S. Hong

doi:10.1109/EUMC.2009.5296313

Tunable microstrip quasi-elliptic function bandpass filters

W. Tang, J.-S. Hong

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

17 Citations (Scopus)

Abstract

In this paper, a new type of varactor-tuned microstrip quasi-elliptic function bandpass filter based on dual-mode open-loop resonator is investigated. By employing the unique characteristic of the dual-mode open-loop resonator, i.e. whose two operating modes (odd- and even-modes) do not couple to each other, tuning the passband frequency becomes simple with a single DC bias circuit. Two finite-frequency transmission zeros on each side of the passband are tunable along with the center frequency, resulting in high selective frequency response. A designed four-pole tunable bandpass filter of this type is demonstrated experimentally.

Original language	English
Title of host publication	2009 European Microwave Conference (EuMC)
Publisher	IEEE
Pages	767-770
Number of pages	4
ISBN (Print)	9781424447480
DOIs	https://doi.org/10.1109/EUMC.2009.5296313
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

Keywords

Dual-mode resonator filter
Microstrip filter
Tunable filter

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10.1109/EUMC.2009.5296313

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title = "Tunable microstrip quasi-elliptic function bandpass filters",

abstract = "In this paper, a new type of varactor-tuned microstrip quasi-elliptic function bandpass filter based on dual-mode open-loop resonator is investigated. By employing the unique characteristic of the dual-mode open-loop resonator, i.e. whose two operating modes (odd- and even-modes) do not couple to each other, tuning the passband frequency becomes simple with a single DC bias circuit. Two finite-frequency transmission zeros on each side of the passband are tunable along with the center frequency, resulting in high selective frequency response. A designed four-pole tunable bandpass filter of this type is demonstrated experimentally.",

keywords = "Dual-mode resonator filter, Microstrip filter, Tunable filter",

author = "W. Tang and J.-S. Hong",

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language = "English",

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T1 - Tunable microstrip quasi-elliptic function bandpass filters

AU - Tang, W.

AU - Hong, J.-S.

N1 - Conference code: EuMC 2009

PY - 2009/10/30

Y1 - 2009/10/30

N2 - In this paper, a new type of varactor-tuned microstrip quasi-elliptic function bandpass filter based on dual-mode open-loop resonator is investigated. By employing the unique characteristic of the dual-mode open-loop resonator, i.e. whose two operating modes (odd- and even-modes) do not couple to each other, tuning the passband frequency becomes simple with a single DC bias circuit. Two finite-frequency transmission zeros on each side of the passband are tunable along with the center frequency, resulting in high selective frequency response. A designed four-pole tunable bandpass filter of this type is demonstrated experimentally.

AB - In this paper, a new type of varactor-tuned microstrip quasi-elliptic function bandpass filter based on dual-mode open-loop resonator is investigated. By employing the unique characteristic of the dual-mode open-loop resonator, i.e. whose two operating modes (odd- and even-modes) do not couple to each other, tuning the passband frequency becomes simple with a single DC bias circuit. Two finite-frequency transmission zeros on each side of the passband are tunable along with the center frequency, resulting in high selective frequency response. A designed four-pole tunable bandpass filter of this type is demonstrated experimentally.

KW - Dual-mode resonator filter

KW - Microstrip filter

KW - Tunable filter

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U2 - 10.1109/EUMC.2009.5296313

DO - 10.1109/EUMC.2009.5296313

M3 - Conference contribution

SN - 9781424447480

SP - 767

EP - 770

BT - 2009 European Microwave Conference (EuMC)

PB - IEEE

T2 - 39th European Microwave Conference 2009

Y2 - 28 September 2009 through 2 October 2009

ER -

Tunable microstrip quasi-elliptic function bandpass filters

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Conference

Keywords

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