V-band, W-band VCO Design and Automotive Passive Keyless Entry Systems Design

• Main Authors: Yu-Zhang Nian, 粘御章
• Other Authors: 王多柏
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/fp6zn6

碩士 === 國立臺北科技大學 === 電子工程系研究所 === 103 === Thesis research can be divided into two parts. The first part introduces that design of V-band and W-band of 0.18-μm CMOS Push-push output enhanced voltage controlled scillator (VCO). By applying varactors connected between drain and source terminations of the cross coupled pair, the tuning range is effectively increased and the phase noise is improved. Based on the proposed architecture, that V-band and W-band VCOs fabricated in 0.18-μm CMOS exhibits a measured 6.49%, 7.49% tuning range, respectively. Operating at a supply voltage of 1 V, the VCO total consumes 8.6 mW, 7.62 mW dc power, respectively. Phase noise is -88.49 dBc/Hz, -80.35 dBc/Hz at 1MHz offsets from the 50 GHz, 95 GHz carrier, respectively. The chip area were 1.00x0.93 mm2, 0.705x0.62 mm2, respectively. The second part introduce the design of Passive Keyless door system, this system uses the Microchip MCP2030 discrete axis analog front-end components, it can be used for low-frequency sensing and two-way communication applications. This element is received by the base station emits a low-frequency 125 kHz signal, and through the microprocessor processes the received signal and signal strength using the analog to digital converter to convert digital signal, and then sent back to the high-frequency 433 MHz, and through HCS312 KEELOQ encryption coding, sent back through the 315 MHz to achieve two-way communication with high security protection system.