2.8 dB conversion gain broadband HBT–HEMT balanced frequency tripler with high harmonic suppression. Issue 11 (1st May 2014)

• Record Type: Journal Article
• Authors: Chen, Guan‐Yu; Chang, Hong‐Yeh; Weng, Shou‐Hsien; Hsin, Yue‐Ming; Wang, Yu‐Chi
• Is Part Of: Electronics letters. Volume 50:Issue 11(2014)
• Page Start: 812
• Page End: 814
• Publication Date: 2014-05-01
• Subjects: frequency multipliers -- harmonics suppression -- heterojunction bipolar transistors -- high electron mobility transistors -- harmonic generation -- band‐pass filters -- baluns -- microwave field effect transistors; conversion gain broadband HBT‐HEMT balanced frequency tripler -- harmonic suppression -- heterojunction bipolar transistor -- high electron mobility transistor -- common‐base/common‐emitter HBT -- in‐phase harmonics generation -- out‐of‐phase harmonics generation -- band‐pass filter -- BPF -- matching network -- common‐gate‐common‐source HEMT active balun -- gain 2.8 dB -- frequency 10.2 GHz to 12.6 GHz; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2014.0678
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A 10.2–12.6 GHz balanced heterojunction bipolar transistor (HBT)–high electron mobility transistor (HEMT) frequency tripler is presented. A pair of common‐base/common‐emitter HBTs is used to generate in‐phase and out‐of‐phase harmonics. Two bandpass filters are utilised as matching networks to enhance the harmonic suppression. A common‐gate/common‐source HEMT active balun is employed to combine the third harmonic in‐phase and provide conversion gain. The proposed frequency tripler shows a conversion gain of 2.8 dB, a fractional bandwidth of 21.2% and a fundamental suppression higher than 47 dB.