Cengiz, ÖmerKelekçi, ÖzgürArıkan, Galip OrkunÖzbay, EkmelPalamutçuoǧullari O.2016-02-082016-02-082011http://hdl.handle.net/11693/28327Date of Conference: 13-20 Aug. 2011This paper reports two different S band GaN MMIC PA designs for WiMAX applications. First PA has a 42.6 dBm output power with a 55%PAE @ 3.5 GHz and 16 dB small signal gain in the 3.2-3.8 GHz frequency range. When two of these MMICs were combined by using off-chip Lange Couplers, 45.3 dBm output power with a 45%PAE @3.5Ghz and 16 dB small signal gain were obtained with less than 0.2 dB gain ripple in the 3.3-3.8 GHz frequency range. © 2011 IEEE.EnglishGain ripplesGHz frequenciesHigh-powerLange couplersMMIC power amplifierOff-chipOutput powerSmall signal gainGallium nitridePower amplifiersWimaxConference Paper10.1109/URSIGASS.2011.6050546