The present study investigates the behaviour and performance of commercially available GaN HEMTs when used for the amplification of pulsed waveforms. A method for determining pulse width variations based on the spectrum of the amplified signal is proposed. The changes in rise and fall times are also investigated across the pulse repetition frequency (PRF) range 100-450 kHz. The influence of RF power and bias levels on such parameters is also examined. The aim of the study is to assess the suitability of commercial GaN HEMTs to pulsed RF applications such as Radar. The RF frequency at which the study is conducted is 3.5GHz.
|Translated title of the contribution||Time and frequency domain analysis of commercial GaN HEMTs operated in pulsed mode|
|Title of host publication||IEEE Asia Pacific Microwave Conference, 2009 (APMC 2009), Singapore|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|Pages||1601 - 1604|
|Number of pages||4|
|Publication status||Published - 21 Sept 2009|