Design and Implementation of Low-Power Transformer-Feedback 5-GHz-Band LNA and VCO

• Main Authors: Yan-Ru Tzeng, 曾彥儒
• Other Authors: Yo-Sheng Lin
• Format: Others
• Language: en_US
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/35540787652805084056

碩士 === 國立暨南國際大學 === 電機工程學系 === 94 === In recently hot wireless communication system such as Wireless Bio-sensor Area Network, Wireless Personal Area Network (WPAN) both demand low-cost and lowpower design techniques to enhance their battery lifetime and to improve their portability. So low power consumption is very important factor. Generally, transformer is used to impedance matching, impedance transformer, filter, and balun. In recently many papers present application of transformer feedback that achieves a low voltage operation with low power consumption. This thesis mainly starts from design and analysis of transformer, and we discuss temperature and substrate effect in the RF monolithic transformer. We find compatible Partial Poly-silicon Ground Shields (PPGS) and backside Inductively Coupled Plasma(ICP) deep trench technologies to optimize the performance of transformers. We explain transformer feedback techniques and design transformer feedback LNA and VCO. At last, we utilize two differential transformers to excite quadrature signal. Comparison of transformer superharmonic QVCO, and explain why is low power consumption