DocumentCode :
503737
Title :
A mm-wave transformer based transmit/receive switch in 90nm CMOS technology
Author :
Adabi, Ehsan ; Niknejad, Ali M.
Author_Institution :
EECS Dept., Univ. of California at Berkeley, Berkeley, CA, USA
fYear :
2009
fDate :
Sept. 29 2009-Oct. 1 2009
Firstpage :
389
Lastpage :
392
Abstract :
A new lumped-element switch topology has been proposed. The switch only incorporates shunt transistors, which makes it more realizable at mm-wave frequencies. Parasitic capacitances are in shunt with the signal path and are resonated out with the effective inductance of a transformer. A 50 GHz transformer based single pole double throw (SPDT) shunt switch was designed and fabricated in 90 nm digital CMOS process. It has a minimum insertion loss of 3.4 dB at 50 GHz from the single pole to the ON-thru port and a leakage of 19 dB from the single pole to the OFF-thru port. The isolation is 13.7 dB between the two thru ports. Return loss for the single pole and ON-thru ports is better than -10 dB. Large signal measurements verify that the switch is capable of handling +14 dBm of input power at its 1 dB compression point. The fabricated SPDT switch has a small active area of 60 μm × 60 μm.
Keywords :
CMOS integrated circuits; capacitance; inductance; microwave switches; CMOS technology; SPDT switch; digital CMOS process; frequency 50 GHz; inductance; loss 3.4 dB; lumped-element switch topology; mm-wave frequency; mm-wave transformer; parasitic capacitance; receive switch; signal path; single pole double throw shunt switch; size 90 nm; transmit switch; Aperture antennas; CMOS technology; Costs; Frequency; Insertion loss; Phase transformers; Phased arrays; Receiving antennas; Switches; Transmitting antennas;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Conference, 2009. EuMC 2009. European
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4748-0
Type :
conf
Filename :
5295932
Link To Document :
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