A 40W push-pull power amplifier for high efficiency, decade bandwidth applications at microwave frequencies

Smith, R. M., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2012. A 40W push-pull power amplifier for high efficiency, decade bandwidth applications at microwave frequencies. Presented at: 2012 IEEE MTT-S International Microwave Symposium Digest (MTT, Montreal, Canada, 17-22 June 2012. Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International. IEEE, pp. 1-3. 10.1109/MWSYM.2012.6259418

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Abstract

A high-efficiency push-pull power amplifier has been designed and measured across a bandwidth of 250MHz to 3.1GHz. The output power was 46dBm with a drain efficiency of above 45% between 700MHz and 2GHz, with a minimum output power of 43dBm across the entire band. In addition, a minimum of 60% drain efficiency and 11dB transducer gain was measured between 350MHz and 1GHz. The design was realized using a coaxial cable transmission line balun, which provides a broadband 2∶1 impedance transformation ratio and reduces the need for bandwidth-limiting conventional matching. The combination of output power, bandwidth and efficiency are believed to be the best reported to date at these frequencies.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords:	Balun, high efficiency, microwave amplifiers, power amplifiers, push-pull, wideband
Publisher:	IEEE
Last Modified:	24 Oct 2022 10:24
URI:	https://orca.cardiff.ac.uk/id/eprint/44198

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