A 15 – 45 GHz Ultra-Broadband SiGe HBT BiCMOS Power Amplifier Using Hybrid Impedance Inverting Balun and Wilkinson Combiner Network
- 주제(키워드) Balun , BiCMOS , Broadband , flip-chip , HBT , power amplifier (PA) , SiGe , Wideband , Wilkinson.
- 발행기관 아주대학교 일반대학원
- 지도교수 주인찬
- 발행년도 2026
- 학위수여년월 2026. 2
- 학위명 석사
- 학과 및 전공 일반대학원 지능형반도체공학과
- 실제URI http://www.dcollection.net/handler/ajou/000000036122
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
This thesis presents a design method of 15–45 GHz ultra-broadband power amplifier (PA) realized in 130-nm SiGe HBT BiCMOS technology, targeting next-generation LEO satellite user terminals. To overcome the fundamentals of Bode-Fano bandwidth limitation, a novel hybrid output matching network is proposed, integrating a two-section Impedance Inverting Balun (ZIB) with a wideband Wilkinson power combiner. By employing susceptance pole splitting, the proposed architecture intentionally offsets the resonance frequencies of the ZIB and the combiner, synthesizing a higher-order response with multiple transmission zeros. This approach effectively absorbs device parasitic capacitance and extends bandwidth. The two-stage differential PA incorporates in the differential CE driver stage with neutralization capacitor and a differential cascode topology in the output stage, utilizing inter-stage gain equalization to ensure flat response. Measurement results demonstrate a peak small-signal gain of 24.5 dB and a saturated output power (𝑃𝑠𝑎𝑡) of 24.5 dBm at 32 GHz. The PA achieves an exceptional 3dB fractional bandwidth of 97.8% (13.8–40.4 GHz) for 𝑃𝑠𝑎𝑡 . The peak Power-Added Efficiency (PAE) reaches 32.2%.This work validates that the proposed a novel hybrid impedance inverting balun s and Wilkinson combiner network topology offers a compact, high- efficiency solution for Ku/K/Ka ultra-wideband phased array applications.
more목차
I. INTRODUCTION 1
A. Research Background 1
B. System Analysis: Link Budget 3
C. Power Amplifier Design Challenges 5
D. Review of Wideband Power Amplifier Topologies 7
II. Wideband Output Matching Network Design 10
A. Hybrid ZIB and Wilkinson Network Architecture 10
B. Design of Impedance Inverting Balun 17
C. Design of Wideband Wilkinson Power Combiner 19
III. Design of Wideband Power Amplifier 22
A. Schematic Overview 22
B. Output Stage Design 23
C. Driver Stage and Matching Network Design 24
IV. MEASUREMENT RESURTS 26
V. CONCLUSION 29
REFERENCES 30
