A Complete Single Chip AM/FM Radio Integrated Circuit

Okanobu, T.; Tsuchiya, Toshiaki; Abe, Kōji; Ueki, Yoshio

doi:10.1109/tce.1982.353937

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1992

2008

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Cited by 10 publications

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“…In FM/AM car radio tuner, AFD is designed to detect frequency by a switch to chose input signal and adjust precise of measurement by controlling the discrimination window, then give search stop signal [4]. However, it usually needs a more complicated circuit and more power consumption.…”

Section: Introductionmentioning

confidence: 99%

Automatic frequency detection circuit for first intermediate frequency of DRM/DAB receivers

Lei

Wang

2008

2008 8th International Symposium on Antennas, Propagation and EM Theory

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This paper presents skills to reduce the detection time and assure the frequency grid of the automatic frequency detector circuit in a DRM/DAB receiver. To support minimum receiver requirements for DRM "Draft Version 1.21", we introduce an automatic frequency detector (AFD) technique for the low-IF receiver, which uses a new detect algorithm to improve detector speed. The simulation results show that the detect time and the frequency grid meet the requirements of DRM "Draft Version 1.21". The AFD circuit is designed with SMIC 0.18 Pm RF CMOS process. Post-simulation results show that the minimum detection time is 1.748 ms. It consumes 0.64 mW under a 1.8 V supply. The core area is 0.15u0.18 mm 2 .

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Section: Introductionmentioning

confidence: 99%