Low-spurious coaxial-line bandpass filter with saucer-loaded stepped-impedance resonators

Hiromitsu Uchida; Yukinobu Furukawa; Tetsu Ohwada; Naofumi Yoneda; Moriyasu Miyazaki

Low-spurious coaxial-line bandpass filter with saucer-loaded stepped-impedance resonators

Hiromitsu Uchida^*, Yukinobu Furukawa, Tetsu Ohwada, Naofumi Yoneda, Moriyasu Miyazaki

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

A low-spurious coaxial-line bandpass filter (BPF) with saucer-loaded stepped-impedance resonators (SAUSIRs) has been developed. The SAUSIR consists of a conventional stepped-impedance resonator (SIR) and a thin metal saucer loaded in the SIR to controll higher-order resonant frequencies of the resonator. By adjusting the positions of the saucers in SAUSIRs, higher-order resonant frequencies of the SAUSIRs in BPF can be scattered in frequency domain without shifting dominant resonant frequency, which results in suppression of spurious responses of the BPF for wide frequency range. A fabricated 4-stage coaxial-line L-band BPF with SAUSIRs has realized spurious responses less than -50 dB up to about 10 f₀, where f₀ is the center frequency of the BPF.

Original language	English
Pages (from-to)	1785-1787
Number of pages	3
Journal	IEEE MTT-S International Microwave Symposium Digest
Volume	3
Publication status	Published - 2002
Externally published	Yes
Event	IEEE MTT-S International Microwave Symposium Digest - Seattle, WA, United States Duration: 2002 Jun 2 → 2002 Jun 7

ASJC Scopus subject areas

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

Cite this

@article{5406591b7cae469f950a14e72c074f9b,

title = "Low-spurious coaxial-line bandpass filter with saucer-loaded stepped-impedance resonators",

abstract = "A low-spurious coaxial-line bandpass filter (BPF) with saucer-loaded stepped-impedance resonators (SAUSIRs) has been developed. The SAUSIR consists of a conventional stepped-impedance resonator (SIR) and a thin metal saucer loaded in the SIR to controll higher-order resonant frequencies of the resonator. By adjusting the positions of the saucers in SAUSIRs, higher-order resonant frequencies of the SAUSIRs in BPF can be scattered in frequency domain without shifting dominant resonant frequency, which results in suppression of spurious responses of the BPF for wide frequency range. A fabricated 4-stage coaxial-line L-band BPF with SAUSIRs has realized spurious responses less than -50 dB up to about 10 f0, where f0 is the center frequency of the BPF.",

author = "Hiromitsu Uchida and Yukinobu Furukawa and Tetsu Ohwada and Naofumi Yoneda and Moriyasu Miyazaki",

year = "2002",

language = "English",

volume = "3",

pages = "1785--1787",

journal = "IEEE MTT-S International Microwave Symposium Digest",

issn = "0149-645X",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

note = "IEEE MTT-S International Microwave Symposium Digest ; Conference date: 02-06-2002 Through 07-06-2002",

}

TY - JOUR

T1 - Low-spurious coaxial-line bandpass filter with saucer-loaded stepped-impedance resonators

AU - Uchida, Hiromitsu

AU - Furukawa, Yukinobu

AU - Ohwada, Tetsu

AU - Yoneda, Naofumi

AU - Miyazaki, Moriyasu

PY - 2002

Y1 - 2002

N2 - A low-spurious coaxial-line bandpass filter (BPF) with saucer-loaded stepped-impedance resonators (SAUSIRs) has been developed. The SAUSIR consists of a conventional stepped-impedance resonator (SIR) and a thin metal saucer loaded in the SIR to controll higher-order resonant frequencies of the resonator. By adjusting the positions of the saucers in SAUSIRs, higher-order resonant frequencies of the SAUSIRs in BPF can be scattered in frequency domain without shifting dominant resonant frequency, which results in suppression of spurious responses of the BPF for wide frequency range. A fabricated 4-stage coaxial-line L-band BPF with SAUSIRs has realized spurious responses less than -50 dB up to about 10 f0, where f0 is the center frequency of the BPF.

AB - A low-spurious coaxial-line bandpass filter (BPF) with saucer-loaded stepped-impedance resonators (SAUSIRs) has been developed. The SAUSIR consists of a conventional stepped-impedance resonator (SIR) and a thin metal saucer loaded in the SIR to controll higher-order resonant frequencies of the resonator. By adjusting the positions of the saucers in SAUSIRs, higher-order resonant frequencies of the SAUSIRs in BPF can be scattered in frequency domain without shifting dominant resonant frequency, which results in suppression of spurious responses of the BPF for wide frequency range. A fabricated 4-stage coaxial-line L-band BPF with SAUSIRs has realized spurious responses less than -50 dB up to about 10 f0, where f0 is the center frequency of the BPF.

UR - http://www.scopus.com/inward/record.url?scp=0036070355&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036070355&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0036070355

SN - 0149-645X

VL - 3

SP - 1785

EP - 1787

JO - IEEE MTT-S International Microwave Symposium Digest

JF - IEEE MTT-S International Microwave Symposium Digest

T2 - IEEE MTT-S International Microwave Symposium Digest

Y2 - 2 June 2002 through 7 June 2002

ER -

Low-spurious coaxial-line bandpass filter with saucer-loaded stepped-impedance resonators

Abstract

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this