TY - GEN
T1 - Low phase noise, image rejected direct-conversion transmitter in 0.18 μm CMOS
AU - Zhang, Haiwei
AU - Xue, Quan
PY - 2015/12
Y1 - 2015/12
N2 - A direct-conversion transmitter is developed at 6 GHz in 0.18 μm CMOS. In order to realize high efficiency quadrature generation as well as bring low deterioration to the overall phase noise, the bulk-coupled technique is adopted into a Class-C type VCO. The image rejection mixer adopts a three-stage poly-phase filter and a pair of Gilbert double-balanced mixer with current bleeding for conversion gain concern. Three-stage two-way combined power amplifier is designed with the purpose to transfer the up-converted differential signal to single-ended one. Based on the measurement, the proposed QVCO achieves a minimum phase noise of-124 dBc/Hz at 1 MHz offset. 2-8 dB improvement is realized compared to the reported works at the frequency of interest. It also realizes 22.6% wide tuning range, resulting a FOMT value of-201. The transmitter demonstrates a peak value of 40 dBc image rejection ratio, with 24 dBm OIP3 verified under two tone measurement.
AB - A direct-conversion transmitter is developed at 6 GHz in 0.18 μm CMOS. In order to realize high efficiency quadrature generation as well as bring low deterioration to the overall phase noise, the bulk-coupled technique is adopted into a Class-C type VCO. The image rejection mixer adopts a three-stage poly-phase filter and a pair of Gilbert double-balanced mixer with current bleeding for conversion gain concern. Three-stage two-way combined power amplifier is designed with the purpose to transfer the up-converted differential signal to single-ended one. Based on the measurement, the proposed QVCO achieves a minimum phase noise of-124 dBc/Hz at 1 MHz offset. 2-8 dB improvement is realized compared to the reported works at the frequency of interest. It also realizes 22.6% wide tuning range, resulting a FOMT value of-201. The transmitter demonstrates a peak value of 40 dBc image rejection ratio, with 24 dBm OIP3 verified under two tone measurement.
KW - CMOS integrated circuits
KW - microwave amplifiers
KW - microwave filters
KW - microwave mixers
KW - microwave oscillators
KW - power amplifiers
KW - voltage-controlled oscillators
KW - CMOS
KW - Class-C type VCO
KW - Gilbert double-balanced mixer
KW - bulk-coupled technique
KW - frequency 1 MHz
KW - frequency 6 GHz
KW - high efficiency quadrature generation
KW - image rejected direct-conversion transmitter
KW - image rejection mixer
KW - low phase noise
KW - size 0.18 mum
KW - three-stage poly-phase filter
KW - three-stage two-way combined power amplifier
KW - Frequency measurement
KW - Mixers
KW - Phase noise
KW - Transmitters
KW - Tuning
KW - Direct-conversion transmitter
KW - QVCO
KW - differential power combing PA
UR - https://www.scopus.com/pages/publications/84979055650
UR - http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000382378800583
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84979055650&origin=recordpage
U2 - 10.1109/APMC.2015.7413446
DO - 10.1109/APMC.2015.7413446
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 978-1-4799-8765-8
VL - 3
T3 - Asia Pacific Microwave Conference-Proceedings
BT - 2015 Asia-Pacific Microwave Conference (APMC2015) Proceedings
A2 - Hong, Wei
A2 - Zhu, Xiaowei
A2 - Yang, Guangqi
PB - IEEE
T2 - 27th Asia-Pacific Microwave Conference (APMC2015)
Y2 - 6 December 2015 through 9 December 2015
ER -