By Topic

A Novel Planar Impedance-Transforming Tight-Coupling Coupler and Its Applications to Microstrip Baluns

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Yongle Wu ; Beijing Key Lab. of Work Safety Intell. Monitoring, Beijing Univ. of Posts & Telecommun., Beijing, China ; Qiang Liu ; Sai-Wing Leung ; Yuanan Liu
more authors

A novel impedance-transforming coupled-line coupler with strong coupling coefficient is proposed in this paper. Its analytical design methodology and applications to microstrip baluns are presented. For demonstration purposes, four numerical examples of this proposed impedance-transforming coupler with different terminated impedances are given. The calculated results show that this proposed coupler not only matches two different groups of terminated impedances but also covers the total power-dividing ratio range from 0 dB to infinite value. The measured results of the fabricated coupler verify the proposed design approach. Finally, this kind of coupler is used to construct a novel planar microstrip balun. This proposed balun has many advantages including planar structure without any via holes, strong coupled lines, and wide operation bandwidth. The experimental results of this proposed balun operating at approximately 2 GHz demonstrated these proposed ideas.

Published in:

Components, Packaging and Manufacturing Technology, IEEE Transactions on  (Volume:4 ,  Issue: 9 )