Abstract
In this article, a single-ended filtering impedance transformer with good frequency selectivity and high transforming ratio is proposed at first, comprising of the two cascaded coupled-line sections with a stub. Also, the balanced structure is expanded based on the differential- and common-mode analysis. The closed-form analytical equations and complete design procedures are provided in detailed. The working principle of the proposed single-ended impedance transformer is applied on the design of the filtering power amplifier (PA). Finally, a 3.3-3.6 GHz bandpass filtering PA with the measured drain efficiency of 62.3%-68.9% is designed, simulated, and fabricated, which displays the good filtering response and power amplification. Good agreement between the simulated and measured results is observed, thus demonstrating the validity of the impedance transformer and PA.
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 callMore From: IEEE Transactions on Circuits and Systems I: Regular Papers
Disclaimer: 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.
