This paper describes the design and implementation of a wideband merged LNA and mixer chip covering the frequency range from 0.1 to 3.85 GHz using 90-nm CMOS technology. Its high level of integration as well as its low power consumption makes it suitable for the rapidly growing software defined radio RF receivers. The chip performance achieves S11 below 10 dB along the entire band and a minimum single side band noise figure of 8.4 dB at IF frequency of 70 MHz. Power conversion gain is measured to be 12.1 dB while the input referred 1 dB compression point is measured to be 12.8 dBm. The chip core consumes only 9.8 mW from a 1.2 V supply with a die area, including the pads, of 0.88 mm 2 .Index Terms-Low noise, merged LNA and mixer, multi-standard, noise cancellation, software defined radio, wideband receiver.

This paper picsenls a reconfigurable dual-band 4.86 and 8.98 GHa dipole anlenna on silicon using scrics MEMS switches. The effccts of series MEMS switches on the antenna performance are studicd. Thc design is performed using thc 3D electromagnetic simulator HFSS'. Using the dcsigned series MEMS switches, thc obtained antenna m u m loss is -lO.ZdB and -21.6dB, at the lower and uppcr frequencies, respectively. However, comparable to the case of ideal switches, a frequency shiA of0.4% and of 2.8% at the lower and uppcr frcqucncics, respecliveiy, is observed. The antenna, including the MEMS switches, has bandwidth of 1.9% and 13.6% at the lowcr and upper frequencies, respectively. The antenna directivity is 2 dB at the lower frequency, and is 3 dB at the uppcr frequency.

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This Paper discusses the feasibility of power generation using a laterally driven comb structure based on MEMS technology. Electrostatic (capacitive) coupling is utilized to convert vibration to electric energy. A detailed structure is presented Parametric study and stability analysis are discussed It's shown that the generation of about IOpW is possible using the SOIMUMPs technology based structure operating at 120 Hz.

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