Ultrawideband balanced bandpass filter

Abbosh, Amin M. (2011) Ultrawideband balanced bandpass filter. IEEE Microwave and Wireless Components Letters, 21 9: 480-482. doi:10.1109/LMWC.2011.2162620


Author Abbosh, Amin M.
Title Ultrawideband balanced bandpass filter
Journal name IEEE Microwave and Wireless Components Letters   Check publisher's open access policy
ISSN 1051-8207
1531-1309
1558-1764
Publication date 2011-09-01
Year available 2011
Sub-type Article (original research)
DOI 10.1109/LMWC.2011.2162620
Open Access Status Not yet assessed
Volume 21
Issue 9
Start page 480
End page 482
Total pages 3
Place of publication Piscataway, NJ, U.S.A.
Publisher IEEE
Language eng
Subject 2208 Electrical and Electronic Engineering
3104 Condensed Matter Physics
Abstract A broadside-coupled structure is utilized to design balanced bandpass filter (BPF) with ultrawideband performance. The top and bottom layers of the structure contain tapered microstrip patches. Those patches are coupled via tapered slots in the ground plane, which is located at the middle layer. The employed structure operates as a BPF in the differential-mode, whereas it operates as an all-stop filter in the common-mode. The simulated and measured performance of the filter show a 123% fractional bandwidth centered at 6.55 GHz, a sharp and wide upper stopband that extends beyond 20 GHz, and a sharp lower stopband. The filter suppresses the common-mode signals by more than 27 dB in the simulations and 24 dB in the measurements across the whole abovementioned band. The designed filter reveals a distortionless performance in the time domain with only 0.1 ns peak-to-peak variation in the group delay across the band 3.1 to 10.6 GHz.
Formatted abstract
A broadside-coupled structure is utilized to design balanced bandpass filter (BPF) with ultrawideband performance. The top and bottom layers of the structure contain tapered microstrip patches. Those patches are coupled via tapered slots in the ground plane, which is located at the middle layer. The employed structure operates as a BPF in the differential-mode, whereas it operates as an all-stop filter in the common-mode. The simulated and measured performance of the filter show a 123% fractional bandwidth centered at 6.55 GHz, a sharp and wide upper stopband that extends beyond 20 GHz, and a sharp lower stopband. The filter suppresses the common-mode signals by more than 27 dB in the simulations and 24 dB in the measurements across the whole abovementioned band. The designed filter reveals a distortionless performance in the time domain with only 0.1 ns peak-to-peak variation in the group delay across the band 3.1 to 10.6 GHz.
Keyword Balanced filter
Bandpass filter (BPF)
Differential filter
Ultrawideband (UWB)
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Information Technology and Electrical Engineering Publications
 
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Created: Fri, 02 Sep 2011, 21:31:01 EST by Dr Amin Abbosh on behalf of School of Information Technol and Elec Engineering