| Summary: | 碩士 === 元智大學 === 通訊工程學系 === 97 === This thesis proposed for the developments of receiver RFICs for Ultra-wide-band UWB system with the TSMC 0.18um 1P6M CMOS process. The designed ICs for the low noise amplifier (LNA), down-convert mixer applications. UWB systems are an emerging wireless technology capable of transmitting data over a wide frequency band for short ranges with low power and even higher data rate. The allocated band of UWB (IEEE 802.15.3a) is between 3.1–10.6 GHz. The designed is also supported by the chip implementation center (CIC). Due to the traditional designs of UWB LNAs usually consume plenty of chip size and power, thus we proposed a input matching network that with common-gate and utilizes an inductor in it, so it can reduce the utilization of chip area. The total chip size with pads was 0.5mm2. In addition, the matching network cooperates with RC feedback circuit and a cascade amplifier with an inter-stage inductor. In the design of 3-6 GHz low noise amplifier, the designed in-band gain of UWB mode can be flat.
Over and above, we proposed a mixer with a common-gate (CG) matching network. The operated frequency was 3-11GHz; Due to the matching structure only use single spiral inductor, so the utilization of chip area can be reduced. The simulation performances are as follows: the bandwidth 3 ~ 11 GHz, gain is above 6 dB, noise figure in 5.9~8.2 dB, P1dB gain-compression point in ????5 dBm, and the input third- intercept-point in about -9.5~8.0 dBm, the dissipated power was 14.7mW.
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