Frequency Synthesizer for K-band Communication Systems
碩士 === 國立中興大學 === 電機工程學系所 === 105 === Recently, the wireless communications are fast developing. In wireless communication systems, the high performance phase-locked loop (PLL) can provide a stable local oscillator (LO), exact frequencies, and channel switch function. In this case, the merger of a q...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2017
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| Online Access: | http://ndltd.ncl.edu.tw/handle/42633230584519373918 |
| Summary: | 碩士 === 國立中興大學 === 電機工程學系所 === 105 === Recently, the wireless communications are fast developing. In wireless communication systems, the high performance phase-locked loop (PLL) can provide a stable local oscillator (LO), exact frequencies, and channel switch function. In this case, the merger of a quadrature-voltage-controlled oscillator (QVCO) with a frequency tripler is designed for 24-GHz band.
This thesis presents a 24-GHz frequency synthesizer implemented with 0.13um CMOS technology. In order to produce high speed output, the frequency tripler using a sub-harmonic mixer is applied at the output stage of the oscillator. The QVCO provides the quadrature fundamental signals which are fed into the frequency tripler for frequency mixing.
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