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Design of a resistive cascode FET direct‐conversion mixer with zero bias‐current
Author(s) -
Kim Jeongpyo,
Choi Jaehoon
Publication year - 2004
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.20355
Subject(s) - cascode , dbm , electrical engineering , microwave , resistive touchscreen , biasing , direct conversion receiver , signal (programming language) , harmonic , optoelectronics , energy conversion efficiency , materials science , local oscillator , power (physics) , electronic engineering , transistor , engineering , radio frequency , voltage , cmos , telecommunications , physics , amplifier , computer science , acoustics , quantum mechanics , detector , programming language
A direct‐conversion mixer with zero‐bias current for IMT‐2000 application is designed by using the resistive cascode FET structure and is driven by the 2 nd ‐harmonic of the local oscillator (LO) signal. Due to the zero‐bias current operation of the cascode FET, the designed mixer has characteristics of very high‐power efficiency and low‐power consumption. In addition, the designed mixer not only has good linearity but also no conversion loss. When the designed mixer is driven by a 0‐dBm LO signal, it has characteristics of 0.67‐dB conversion gain, 4‐dBm input P −1dB , 8.25‐dBm IIP3, and 8.2‐dBm IIP2. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 42: 516–518, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20355