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DÖRT TON KÜÇÜK İŞARET GİRİŞLİ GaN HEMT TRANSİSTÖRÜN FARKLI SICAKLIKLARDAKİ ASİMETRİK GENLİK DEĞİŞİMİ

ASYMMETRIC AMPLITUDE VARIATION FOR FOUR TONE SMALL SIGNAL INPUT GaN HEMT AT DIFFERENT TEMPERATURES

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Abstract (2. Language): 
In this study, temperature dependence of GaN HEMT is analyzed by Volterra power series expansion up to third order by obtaining the small signal transfer functions H1, H2 and H3. By using the first order-kernel small signal transfer function (H1) at different temperature values of 100K, 300K and 600K (Kelvin, K) of four-tone small signal input, The intermodulation (IMD) frequency components are analyzed with respect to gate to source voltage Vgs. In the study, the IMD frequency components are examined in two groups which are (1-6) and (7- 17) respectively. The asymmetric amplitude changes between and inside the groups, critical frequency region, bandwidth and IMD communications are also evaluated.
Abstract (Original Language): 
Bu çalışmada, GaN HEMT transistörün sıcaklığa bağlı analizi yapılarak Volterra güç serisi üçüncü dereceye kadar açılmış ve küçük işaret transfer fonksiyonları (H1, H2, H3) elde edilmiştir. Birinci çekirdek küçük işaret transfer fonksiyonu (H1) kullanılarak 100K, 300K ve 600K sıcaklık değerlerinde dört-tonlu küçük işaret girişinden elde edilen intermodülasyon (IMD) frekans bileşenleri, geçit-kaynak (Gate source, Vgs) gerilimine bağlı olarak analiz edilmiştir. Çalışmada IMD frekans bileşenleri iki grupta irdelenmiş; birinci grup bileşenler (1- 6) ve ikinci grup bileşenler ise (7-17) olarak alınmış ve gruplar arası ve grup içi asimetrik genlik değişimi, kritik frekans bölgesi, bant genişliği ve IMD haberleşme de değerlendirilmiştir.
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