Design and Fabrication of the SHP Mixer for the 5 ㎓ Band Wireless Communication System

Kim, Kab-Ki; Ahn, Young-Sup

Journal of Navigation and Port Research 2004;28(10):875-879.
Published online December 31, 2004.

5 ㎓ 대역 무선통신용 SHP 혼합기 설계 및 제작

김갑기, 안영섭

Design and Fabrication of the SHP Mixer for the 5 ㎓ Band Wireless Communication System

Kab-Ki Kim, Young-Sup Ahn

Abstract

In this paper, sub-harmonic pumped(SHP) mixer using anti-parallel diode pair(APDP) is designed for 5 ㎓ band wireless communication. system. Conventional mixers mix LO with FR, and obtain IF signal from the difference between LO and RF. As the frequency increase, LO signal requires higher LO power, better phase noise characteristics, more stable LO. However, using APDP, the SHP mixer mixes the 2nd harmonics of LO signal. Therefore, the SHP mixer has an advantage that the LO signal frequency required for IF signal is reduced at half value of Lo fundamental frequency. When Lo power is 3 ㏈m, the conversion loss of manufactured SHP mixer is 12.83 ㏈. The isolation of LO/IF, 2LO/IF, RF/IF and LO/RF is 39.17 ㏈, 58 ㏈, 34 ㏈, and 67.9 ㏈. respectively. For this case, IP3 at input is 8 ㏈m.

Key Words: Anti-parallel diode pair(APDP);Industrial scientific Medical(ISM)