Abstract
A novel and successful stepped-impedance coupler with enhanced isolation is presented. By incorporating the distributed interdigital capacitance at the ends of the coupled section in the planar structure, the even- and odd-mode phase velocities can be equalised so as to enhance the isolation. Measured results show an enhanced isolation of 47.5 dB at the centre frequency 2.4 GHz and a size reduction of 30% when compared with the conventional parallel-line coupler. It is also shown that the coupling frequency flatness is as broadband as 3.1 GHz.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
