Title :
A 24 GHz phased-array transmitter in 0.18 μm CMOS
Author :
Natarajan, Arun ; Komijani, Abbas ; Hajimiri, Ali
Author_Institution :
California Inst. of Technol., Pasadena, CA, USA
Abstract :
A fully integrated 4-element phased-array transmitter at 24 GHz with on-chip PAs is implemented in a 0.18 μm CMOS process. It has a beam-forming resolution of 10°, a peak-to-null ratio of 23 dB, and isolation between paths of 28 dB. Each CMOS PA can deliver up to +14 dBm into a 50 Ω load. The transmitter supports a 500 Mb/s QPSK signal and has a bandwidth in excess of 400 MHz. The die size is 6.8×2.1 mm2 and the complete 4-element transmitter, including the 4 on-chip PAs, draws 788 mA from a 2.5 V supply.
Keywords :
CMOS analogue integrated circuits; MMIC power amplifiers; array signal processing; integrated circuit design; quadrature phase shift keying; radar transmitters; radio transmitters; 0.18 micron; 2.1 mm; 2.5 V; 24 GHz; 500 Mbit/s; 6.8 mm; 788 mA; CMOS process; QPSK signal; bandwidth; beam-forming resolution; low-cost radar; on-chip power amplifiers; peak-to-null ratio; phased-array transmitter; wireless communication networks; Baseband; CMOS technology; Delay; Frequency synthesizers; Impedance matching; Intelligent networks; Stability; Transmitters; Tuning; Voltage-controlled oscillators;
Conference_Titel :
Solid-State Circuits Conference, 2005. Digest of Technical Papers. ISSCC. 2005 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8904-2
DOI :
10.1109/ISSCC.2005.1493944
