Tunable bandpass filter with constant absolute bandwidth using double-sided parallel-strip lines

Bin Li; Yu Hang Miao; Hou Min Li; Xin Qing Sheng

Tunable bandpass filter with constant absolute bandwidth using double-sided parallel-strip lines

Bin Li, Yu Hang Miao^*, Hou Min Li, Xin Qing Sheng

^*Corresponding author for this work

School of Integrated Circuits and Electronics

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

A novel tunable bandpass filter with constant absolute bandwidth (ABW) using double-sided parallel-strip lines (DSPSL) was proposed. The constant ABW can be realized by selecting a specific coupling region to control the coupling coefficient between resonators. Both a single-ended and a differential signaling bandpass filters were studied. For the single-ended case, its 3 dB ABW (|S₁₁| <-3 dB) is about 80±4 MHz as the center frequency tuned from 0.97 GHz to 1.43 GHz. For its differential counterpart, the 3 dB ABW (|S_dd11|<-3 dB) is about 91±3 MHz, and the suppression of common-mode noise is less than -20 dB.

Original language	English
Pages (from-to)	77-82
Number of pages	6
Journal	Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume	34
Issue number	1
Publication status	Published - Jan 2014

Keywords

Bandpass filter
Capacitor loaded
Constant absolute bandwidth
Double-sided parallel-strip lines
Frequency tunable

Cite this

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abstract = "A novel tunable bandpass filter with constant absolute bandwidth (ABW) using double-sided parallel-strip lines (DSPSL) was proposed. The constant ABW can be realized by selecting a specific coupling region to control the coupling coefficient between resonators. Both a single-ended and a differential signaling bandpass filters were studied. For the single-ended case, its 3 dB ABW (|S11| <-3 dB) is about 80±4 MHz as the center frequency tuned from 0.97 GHz to 1.43 GHz. For its differential counterpart, the 3 dB ABW (|Sdd11|<-3 dB) is about 91±3 MHz, and the suppression of common-mode noise is less than -20 dB.",

keywords = "Bandpass filter, Capacitor loaded, Constant absolute bandwidth, Double-sided parallel-strip lines, Frequency tunable",

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N2 - A novel tunable bandpass filter with constant absolute bandwidth (ABW) using double-sided parallel-strip lines (DSPSL) was proposed. The constant ABW can be realized by selecting a specific coupling region to control the coupling coefficient between resonators. Both a single-ended and a differential signaling bandpass filters were studied. For the single-ended case, its 3 dB ABW (|S11| <-3 dB) is about 80±4 MHz as the center frequency tuned from 0.97 GHz to 1.43 GHz. For its differential counterpart, the 3 dB ABW (|Sdd11|<-3 dB) is about 91±3 MHz, and the suppression of common-mode noise is less than -20 dB.

AB - A novel tunable bandpass filter with constant absolute bandwidth (ABW) using double-sided parallel-strip lines (DSPSL) was proposed. The constant ABW can be realized by selecting a specific coupling region to control the coupling coefficient between resonators. Both a single-ended and a differential signaling bandpass filters were studied. For the single-ended case, its 3 dB ABW (|S11| <-3 dB) is about 80±4 MHz as the center frequency tuned from 0.97 GHz to 1.43 GHz. For its differential counterpart, the 3 dB ABW (|Sdd11|<-3 dB) is about 91±3 MHz, and the suppression of common-mode noise is less than -20 dB.

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KW - Frequency tunable

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Tunable bandpass filter with constant absolute bandwidth using double-sided parallel-strip lines

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Keywords

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