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A CMOS 80-400 MHz 5TH order Chebyshev Gm-C low-pass filter with a unique auto tuning system is presented. The filter was designed and fabricated with TSMC 0.13-μm RF CMOS process. Experimental results show that the cut-off frequency of the filter can be tuned between 80-400 MHz, with a tuning step less than 7MHz and an average tuning error of 3.6%. The filter also realizes gain of 0-30 dB, IIP3 of...
An integrated 6.2-9.5GHz CMOS UWB receiver for WiMedia MB-OFDM is proposed. The fully differential receiver consists of a wideband LNA and a down conversion mixer with high and low gain mode. A low-pass filter and a programmable gain amplifier are also included. The chip was fabricated in TSMC 0.13-μm RF CMOS process. Measurement results show that the receiver achieves voltage gain from 21dB to 63dB...
An analog baseband chain for WiMedia MB-OFDM UWB and China UWB standard is presented. The baseband chain consists of a fifth-order chebyshev type low pass filter with two switchable cut-off frequencies. A programmable gain amplifier based on enhanced source degeneration architecture is also included. The chip was fabricated in TSMC 0.13-μ RF CMOS process. Measurement results show that the analog baseband...
This paper presents a 1.2V CMOS RSSI based on successive detection structure. An equation estimating the maximum nonlinear error is derived and the simulation results show it is more accurate than the former one proposed by P. C. Huang. The RSSI achieves a wide bandwidth from 1MHz to 500MHz. The linear dynamic range is at least 80dB. The nonlinear error based on single frequency curve fitting is within...
An integrated ultra-wideband CMOS RF front-end for UWB 6-9 GHz application is presented in this paper. A single-in-differential-out gain controllable low noise amplifier and a current-reuse bleeding IQ merged quadrature mixer are integrated as the RF front-end. This ESD protected module is implemented in TSMC 0.13μm RF CMOS process and the post-layout simulation results shows that it achieves a high...
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