Resonant pulse-shaping power supply for radar transmitters
Document typeConference report
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessRestricted access - publisher's policy
The final radiofrequency power amplifier (PA) of a radar transmitter module is a large factor in system efficiency. Typical radar transmitter signals are frequency-modulated with constant-amplitude pulse envelopes in order to optimize efficiency, resulting in spectral broadening and power radiated outside of the radar frequency band. This paper demonstrates a PA with a dynamic power supply which enables high efficiency while reducing the spectral emissions. The resonant pulse-shaping power supply generates a raised-cosine pulse envelope waveform with efficiency greater than 90% and peak envelope power around 6 W. Measured results with a 2.14-GHz GaN power amplifier with an efficiency of 76% at peak power demonstrate over 67% transmitter efficiency.
CitationRodriguez, M. [et al.]. Resonant pulse-shaping power supply for radar transmitters. A: International Power Electronics and Motion Control Conference. "EPE-PEMC 2012: proceedings: 15th International Power Electronics and Motion Control Conference: 4-6 September 2012, Novi Sad, Serbia". Novi Sad: Institute of Electrical and Electronics Engineers (IEEE), 2012, p. LS5e.31-LS5e.37.
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