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To handle peak-to-average power ratio in 802.11a/g WLAN RX baseband, a 5th-order, 10.5 MHz cut-off frequency, instantaneously companding SC LPF is fabricated in a 0.13 ??m CMOS process. It occupies 2.2 mm2 active chip area and consumes 53 mW with a DR of 79 dB over an SNDR of 34 dB and EVMrms<3.8%, saving 3.3?? power and 1.5?? chip area as compared to the non-companding case.
The results of experimental research of noble gas halide excilamp, using inductive high-frequency discharge, are presented. Advantage of this excilamp consists in simplicity of its design. As a source of excitation the power supply unit of own construction was used at pulse repetition frequency 10,5 MHz. Average power of energy deposition in the active medium changed from 40 up to 160 W. At an optimum...
The small sizes of the MEMS or NEMS electromechanical resonators and their single wafer, multi frequencies possibilities has focused tremendous interest in the development of demonstrators using standard CMOS process. But sizes reduction induces output signal detection challenge. This paper deals with the dynamic characterization of NEMS. Heterodyne interferometric measurements are performed on beam...
A quadrature cascaded modulator with continuous-time loop filters is presented for a digital multi-stream FM radio receiver. The ADC achieves a dynamic range of 77 dB and 20 MHz bandwidth centered on an intermediate frequency of 10.5 MHz and is sampling at 340 MHz. The cascaded modulator comprises programmable analog second-order quadrature filters and a digital quadrature noise cancellation filter...
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