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This paper presents a wide-band digital frequency synthesizer architecture targeted for spectrum sensing applications. The proposed digital period synthesizer (DPS) architecture can achieve wide operational bandwidth, extremely high frequency resolution and short settling time with low power and area consumption. The frequency synthesizer was implemented in a 65-nm CMOS process and it occupies 0.12...
A channel-select filter for a multicarrier WCDMA receiver targeted for base-station applications is described in this paper. The 4th-order Chebyshev lowpass filter with a 0.1-dB passband ripple is designed to drive high-resolution A/D converters. The -3-dB frequency of the implemented filter is 10 MHz in order to receive two adjacent downconverted WCDMA channels. The filter is designed to have high...
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