Broadband parallel-coupled quadrature coupler with floating-potential ground plane conductor

Abbosh, A. M. (2008) Broadband parallel-coupled quadrature coupler with floating-potential ground plane conductor. Microwave and Optical Technology Letters, 50 9: 2304-2307. doi:10.1002/mop.23701


Author Abbosh, A. M.
Title Broadband parallel-coupled quadrature coupler with floating-potential ground plane conductor
Journal name Microwave and Optical Technology Letters   Check publisher's open access policy
ISSN 0895-2477
Publication date 2008-09-01
Year available 2008
Sub-type Article (original research)
DOI 10.1002/mop.23701
Open Access Status Not yet assessed
Volume 50
Issue 9
Start page 2304
End page 2307
Total pages 4
Editor K. Chang
Place of publication USA
Publisher John Wiley & Sons Inc
Language eng
Subject C1
100505 Microwave and Millimetrewave Theory and Technology
861799 Communication Equipment not elsewhere classified
Abstract The design of a parallel-coupled directional coupler, which has a broadband performance, is presented. A floating-potential ground plane conductor is used underneath the coupled region to relax the requirement for a narrow slot between the coupled lines and to improve the isolation and return loss performance of the device. The simulated and measured results show that the designed coupler exhibits a coupling of 3 ± 1 dB across the band 4-10.2 GHz, when the spacing between the coupled lines is 0.13 mm, which is easy to manufacture. This broadband coupling is accompanied by an isolation and return loss which are better than 15 dB across the band 3.1-10.6 GHz. The simulated and measured results show good phase stability and flat group delay across the ultra wideband. The designed device has a compact size with a dimension of 30 mm × 20 mm. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2304-2307, 2008; Published online in Wiley InterScience (www.interscience.wiley.com).DOI 10.1002/mop.23701
Keyword directional coupler
broadband
coupled lines
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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