Balanced dual-band bpf using only equal-electric-length SIRs for common-mode suppression

C. I.G. Hsu, C. C. Hsu, Ching-Her Lee, Hsun-Hsiang Chen

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This paper presents a new balanced dual-band bandpass filter (BPF) designed for 2.4/5.2 GHz wireless local area networks (WLANs). Because adopted in the BPF are only bi-section equal-electric-length stepped-impedance resonators (SIRs), whose dimensions can be determined using analytic formulas, the BPF can be easily and efficiently designed. The inner SIRs are designed to resonate only at the odd-mode resonant frequencies of the input and output SIRs but not at the even-mode ones. This leads to well-behaved differential-mode (DM) transmission and excellent common-mode (CM) suppression for the BPF. Simulated and measured results are found to agree quite well to each other. The measured minimum DM insertion losses in the two passbands are 2.1 and 2.54 dB, whereas the measured CM rejections are higher than 33 dB in the frequency range from 1 to 7 GHz.

Original languageEnglish
Pages (from-to)695-705
Number of pages11
JournalJournal of Electromagnetic Waves and Applications
Volume24
Issue number5-6
DOIs
Publication statusPublished - 2010 Mar 1

Fingerprint

Bandpass filters
Resonators
resonators
retarding
impedance
bandpass filters
Insertion losses
Wireless local area networks (WLAN)
Natural frequencies
local area networks
insertion loss
rejection
resonant frequencies
frequency ranges
output

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy(all)
  • Electrical and Electronic Engineering

Cite this

@article{cd3e741a57e84eb0a9c8d465ebce7069,
title = "Balanced dual-band bpf using only equal-electric-length SIRs for common-mode suppression",
abstract = "This paper presents a new balanced dual-band bandpass filter (BPF) designed for 2.4/5.2 GHz wireless local area networks (WLANs). Because adopted in the BPF are only bi-section equal-electric-length stepped-impedance resonators (SIRs), whose dimensions can be determined using analytic formulas, the BPF can be easily and efficiently designed. The inner SIRs are designed to resonate only at the odd-mode resonant frequencies of the input and output SIRs but not at the even-mode ones. This leads to well-behaved differential-mode (DM) transmission and excellent common-mode (CM) suppression for the BPF. Simulated and measured results are found to agree quite well to each other. The measured minimum DM insertion losses in the two passbands are 2.1 and 2.54 dB, whereas the measured CM rejections are higher than 33 dB in the frequency range from 1 to 7 GHz.",
author = "Hsu, {C. I.G.} and Hsu, {C. C.} and Ching-Her Lee and Hsun-Hsiang Chen",
year = "2010",
month = "3",
day = "1",
doi = "10.1163/156939310791036241",
language = "English",
volume = "24",
pages = "695--705",
journal = "Journal of Electromagnetic Waves and Applications",
issn = "0920-5071",
publisher = "Taylor and Francis Ltd.",
number = "5-6",

}

Balanced dual-band bpf using only equal-electric-length SIRs for common-mode suppression. / Hsu, C. I.G.; Hsu, C. C.; Lee, Ching-Her; Chen, Hsun-Hsiang.

In: Journal of Electromagnetic Waves and Applications, Vol. 24, No. 5-6, 01.03.2010, p. 695-705.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Balanced dual-band bpf using only equal-electric-length SIRs for common-mode suppression

AU - Hsu, C. I.G.

AU - Hsu, C. C.

AU - Lee, Ching-Her

AU - Chen, Hsun-Hsiang

PY - 2010/3/1

Y1 - 2010/3/1

N2 - This paper presents a new balanced dual-band bandpass filter (BPF) designed for 2.4/5.2 GHz wireless local area networks (WLANs). Because adopted in the BPF are only bi-section equal-electric-length stepped-impedance resonators (SIRs), whose dimensions can be determined using analytic formulas, the BPF can be easily and efficiently designed. The inner SIRs are designed to resonate only at the odd-mode resonant frequencies of the input and output SIRs but not at the even-mode ones. This leads to well-behaved differential-mode (DM) transmission and excellent common-mode (CM) suppression for the BPF. Simulated and measured results are found to agree quite well to each other. The measured minimum DM insertion losses in the two passbands are 2.1 and 2.54 dB, whereas the measured CM rejections are higher than 33 dB in the frequency range from 1 to 7 GHz.

AB - This paper presents a new balanced dual-band bandpass filter (BPF) designed for 2.4/5.2 GHz wireless local area networks (WLANs). Because adopted in the BPF are only bi-section equal-electric-length stepped-impedance resonators (SIRs), whose dimensions can be determined using analytic formulas, the BPF can be easily and efficiently designed. The inner SIRs are designed to resonate only at the odd-mode resonant frequencies of the input and output SIRs but not at the even-mode ones. This leads to well-behaved differential-mode (DM) transmission and excellent common-mode (CM) suppression for the BPF. Simulated and measured results are found to agree quite well to each other. The measured minimum DM insertion losses in the two passbands are 2.1 and 2.54 dB, whereas the measured CM rejections are higher than 33 dB in the frequency range from 1 to 7 GHz.

UR - http://www.scopus.com/inward/record.url?scp=77950531232&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77950531232&partnerID=8YFLogxK

U2 - 10.1163/156939310791036241

DO - 10.1163/156939310791036241

M3 - Article

AN - SCOPUS:77950531232

VL - 24

SP - 695

EP - 705

JO - Journal of Electromagnetic Waves and Applications

JF - Journal of Electromagnetic Waves and Applications

SN - 0920-5071

IS - 5-6

ER -