Title :
Low noise amplifier with center frequency hopping for an MB-OFDM UWB receiver
Author :
Tanaka, Akio ; Kodama, Hiroshi ; Kasamatsu, Akifumi
Author_Institution :
Syst. Devices Res. Labs., NEC Corp., Kanagawa, Japan
Abstract :
We describe a real-time center frequency hopping scheme in which the resonant frequency of an LC load is changed by switching binary weighted capacitors and where switching noise is canceled with compensation transistors and CML buffers. Simulation results employing 0.18-μm CMOS technology have verified that the center frequency is changed within 3 ns. A peak power gain of 17 dB and noise figure of 3.3 dB were simulated. This scheme is applicable to sub-100-nm reconfigurable radios.
Keywords :
CMOS integrated circuits; OFDM modulation; current-mode logic; frequency hop communication; integrated circuit design; microwave amplifiers; microwave receivers; radio receivers; software radio; wideband amplifiers; 0.18 micron; 17 dB; 3 ns; 3.1 to 10.6 GHz; 3.3 dB; CML buffers; CMOS technology; UWB receiver; binary weighted capacitors; center frequency hopping; compensation transistors; low noise amplifier; multi-band OFDM receiver; noise figure; peak power gain; reconfigurable radios; resonant frequency; Band pass filters; CMOS technology; Capacitors; Frequency; Impedance matching; Laboratories; Low-noise amplifiers; Noise figure; Voltage; Wideband;
Conference_Titel :
Ultra Wideband Systems, 2004. Joint with Conference on Ultrawideband Systems and Technologies. Joint UWBST & IWUWBS. 2004 International Workshop on
Print_ISBN :
0-7803-8373-7
DOI :
10.1109/UWBST.2004.1321008
