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High‐gain mixer using cascode current bleeding and g m ‐boosting techniques
Author(s) -
Lee JiYoung,
Yun TaeYeoul
Publication year - 2017
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.30215
Subject(s) - transconductance , cascode , cmos , noise figure , transistor , electrical engineering , inductor , resistor , electronic engineering , materials science , frequency mixer , operational transconductance amplifier , engineering , voltage , radio frequency , operational amplifier , amplifier
This paper presents a high‐gain down‐conversion mixer using a cascode current bleeding technique and a transconductance ( g m )‐boosting technique. Unlike the conventional folded‐type mixer, an n MOS input transconductance transistor is allocated under p MOS switching transistors and load resistors in the proposed mixer. This topology allows the folded mixer to reuse the total current at the input transconductance transistor for low power consumption and to adopt the current bleeding technique for high gain. In addition, the g m ‐boosting technique increases effective transconductance by adding a positive‐feedback inductor. Measured results show a maximum voltage conversion gain of 23.8 dB, an input third‐order intercept point (IIP3) of −10.5 dBm at the maximum gain, a minimum noise figure of 4.3 dB, and a 3‐dB bandwidth from 7.2 to 8.4 GHz with a consumption of 3.9 mW from a 1.2 V supply. The chip size, including test pads, is 0.9 × 0.95 mm 2 using 0.13 μ m RF CMOS technology. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:1–6, 2017