| Summary: | 碩士 === 逢甲大學 === 通訊工程所 === 98 === With the growth of the information technology industry, the technologies of communication arouse more and more attention in these years. In this thesis, the low-noise amplifier (LNA) for Ultra-Wideband (UWB) application will be designed and implemented. It must have the characteristics of wide bandwidth, low noise, and low power consumption at the same time. The whole spectrum bandwidth of UWB covers 7.5GHz from the frequencies of 3.1 to 10.6 GHz. I will use cascode design to achieve wideband matching for the flat power gain , and use current reused techniques to reduce the power consumption. However, this circuit has a larger power consumption and larger chip area, i are using transformer feedback methods to improve the Circuit.
Recently, the demand for high data rate makes the desired operation frequency of RFICs moving toward higher bands. Among the applications, K-band (18-26.5 GHz) is of great interest, which can be used for short-range and high data-rate wireless communication systems. low noise amplifiers (LNA) was use the transformer feedback configuration for K-Band applications. Two circuits are implemented by a standard TSMC 0.18-μm CMOS technology.
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