Open AccessLow‐power up‐conversion folded CMOS mixer for 2–12 GHz ultra‐wideband applications
Author(s) -
Chen JunDa,
Qian Jiabin
Publication year - 2020
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2020.0287
Subject(s) - frequency mixer , cmos , gilbert cell , local oscillator , electrical engineering , inductor , wideband , transconductance , materials science , intermediate frequency , radio frequency , amplifier , electronic mixer , noise figure , harmonic mixer , optoelectronics , electronic engineering , voltage , engineering , transistor
This study presents an ultra‐wideband up‐conversion mixer chip that operates within the frequency range of 2–12 GHz using TSMC 0.18 μm complementary metal oxide semiconductor (CMOS) technology. The architecture is based on that of a Gilbert cell mixer. The design of the transconductance stage is based on an inverting amplifier. Two series resonant inductors are used to increase the conversion gain of the mixer, and a transformer that consists of two self‐made inductors reduces the spatial requirement of the chip. This up‐mixer achieves a 12.48 dB conversion gain and features an excellent gain flatness value of ±1.2 dB. The local oscillator (LO)‐to‐radio‐frequency isolation is 44–20 dB, the input third‐order intercept point (IIP3) is −6.8 to −8 dBm and the DC power consumption is 5.084 mW for a supply voltage of 1 V. The total size of the chip for the up‐mixer is 1.2 × 1.2 mm 2 , including the pad frames.