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Title: Radio frequency front-end circuits for W-CDMA direct conversion receiver
Keywords: RF Front-end W-CDMA direct conversion receiver
Issue Date: 15-Jan-2008
Citation: WONG SHENG JAU (2008-01-15). Radio frequency front-end circuits for W-CDMA direct conversion receiver. ScholarBank@NUS Repository.
Abstract: The work presented in this thesis focuses on the system analysis and the development of RF front-end circuits for the direct conversion receiver. The receiver is targetted for W-CDMA mobile communication system, hence the technical requirements are analyzed and the design goals for the RF front-end circuits are derived. In the second part of the thesis, the designs, simulations and the measurements from two LNA topologies, two down-converted mixers and one integrated front-end circuit are covered. All the circuits are implemented through the Chartered Semiconductor Manufacturing 0.35 N<m CMOS technology with the RF option. The measurements of the integrated front-end design shows that the total gain and noise figure in high gain mode are 22 dB and 9.5 dB respectively. The IIP2 is 23 dBm in high gain mode, this result will be further improved when the bypass switch of the LNA is turned on. The total current consumption is 17 mA in high gain mode and it is reduced to 12 mA when the LNA is switched off.
Appears in Collections:Master's Theses (Open)

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