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Title: Dual-band FSK receiver and building block design for UWB impulse radio
Keywords: CMOS, ultra-wideband (UWB), receiver, low-noise amplifier, frequency shift keying (FSK), active inductor
Issue Date: 6-Feb-2009
Source: MURLI UNNIKRISHNAN NAIR (2009-02-06). Dual-band FSK receiver and building block design for UWB impulse radio. ScholarBank@NUS Repository.
Abstract: A CMOS non-coherent impulse radio receiver implementing a dual-band frequency shift keying (FSK) modulation scheme for ultra-wideband communication is presented. The quadrature direct-conversion architecture of the receiver retains low-complexity operation while the added diversity gain of the FSK modulation enables reliable demodulation at signal to interference ratio (SIR) as low as b 60dB. Several innovative circuit structures including an area and power efficient UWB low-noise amplifier utilizing active inductors and a hybrid topology mixer to extend operational bandwidth without compromising conversion gain have been explored. In addition, a 4-bit R-2R DAC capable of less than 0.5 LSB INL and DNL, a four-quadrant squarer with squaring gain of 65 and a dual threshold comparator with more than 700mV hysterisis and have also been designed.The fabricated receiver achieves a sensitivity of -88 dBm at a BER of 10-5 at 25 MHz data rate with an energy efficiency of 2.7 to 4.95 nJ/bit.
Appears in Collections:Master's Theses (Open)

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