DocumentCode :
2707826
Title :
A 3–10 GHz full-band single VCO agile switching frequency generator for MB-OFDM UWB
Author :
Wang, Chao-Shiun ; Li, Wei-Chang ; Wang, Chorng-Kuang ; Shih, Horng-Yuan ; Yang, Tzu-Yi
Author_Institution :
Nat. Taiwan Univ., Taipei
fYear :
2007
fDate :
12-14 Nov. 2007
Firstpage :
75
Lastpage :
78
Abstract :
This paper presents an agile switching frequency generator with a single voltage controlled oscillator (VCO) covering all the 14 bands for MB-OFDM UWB system. The proposed architecture with the group selection mixers is designed to simplify the synthesizer implementation for optimizing the system power consumption and harmonic sideband spurious suppression. This frequency generator, which consists of a series of dividers, quadrature counterbalance single sideband mixers and output buffers, achieves an agile switching lime of 7 ns and the unwanted sidebands of less than 35 dBc. The circuit occupies an active area of 1.8x1.6 mm2 in a 0.13 mum mixed mode CMOS technology. The overall system draws a current consumption of 49 mA from a 1.2 V supply.
Keywords :
CMOS integrated circuits; OFDM modulation; frequency synthesizers; harmonics suppression; microwave mixers; mixed analogue-digital integrated circuits; transceivers; ultra wideband communication; voltage-controlled oscillators; MB-OFDM UWB system; UWB transceiver; current 49 mA; frequency 3 GHz to 10 GHz; frequency synthesizers; full-band single VCO agile switching frequency generator; group selection mixers; harmonic sideband spurious suppression; mixed mode CMOS technology; multi-band orthogonal frequency-division multiplexing; output buffers; quadrature counterbalance single sideband mixers; size 0.13 micron; ultra-wideband systems; voltage 1.2 V; voltage controlled oscillator; wireless communication systems; Amplitude modulation; Circuits; Consumer electronics; Filters; Frequency synthesizers; Mixers; Multiplexing; Switching frequency; Transceivers; Voltage-controlled oscillators; CMOS; Frequency synthesizer; UWB;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Circuits Conference, 2007. ASSCC '07. IEEE Asian
Conference_Location :
Jeju
Print_ISBN :
978-1-4244-1359-1
Electronic_ISBN :
978-1-4244-1360-7
Type :
conf
DOI :
10.1109/ASSCC.2007.4425735
Filename :
4425735
Link To Document :
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