Directional coupler with two octaves band and high directivity using stepped-impedance coupled structure

Zhu, He and Abbosh, A. M. (2015). Directional coupler with two octaves band and high directivity using stepped-impedance coupled structure. In: 2015 Asia-Pacific Microwave Conference (APMC). Asia-Pacific Microwave Conference (APMC), Nanjing, China, (). 6-9 December 2015. doi:10.1109/APMC.2015.7413355


Author Zhu, He
Abbosh, A. M.
Title of paper Directional coupler with two octaves band and high directivity using stepped-impedance coupled structure
Conference name Asia-Pacific Microwave Conference (APMC)
Conference location Nanjing, China
Conference dates 6-9 December 2015
Convener IEEE
Proceedings title 2015 Asia-Pacific Microwave Conference (APMC)
Journal name Asia-Pacific Microwave Conference Proceedings, APMC
Place of Publication Piscataway, NJ, United States
Publisher IEEE
Publication Year 2015
Sub-type Fully published paper
DOI 10.1109/APMC.2015.7413355
Open Access Status Not Open Access
ISBN 9781479987658
Volume 3
Total pages 3
Collection year 2016
Language eng
Abstract/Summary A directional coupler using stepped-impedance broadside coupled structure is presented. The design is targeted to have 3-dB coupling with more than 30 dB directivity across a two-octave band (more than 110% fractional bandwidth). The second-order even- and odd-mode analysis method is adopted to design the device and calculate its performance. Moreover, a prototype is modelled in a simulation tool to validate the design procedure. The simulation results indicate 3-dB coupling with less than 1 dB deviation, more than 35 dB isolation and 30 dB return loss, and less than 4° of phase imbalance across the band from 1 to 4 GHz.
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status UQ

 
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