Integrated radio broadcasting receiver

Abstract

The invention relates to an integrated radio broadcasting receiver. The integrated radio broadcasting receiver comprises a simulative orthogonal mixer, an analog-to-digital converter, a digital local oscillation generator, a digital orthogonal mixer, a demodulating module, a frequency divider, an inverter and a controller, wherein the inverter is connected between the digital local oscillation generator and the digital orthogonal mixer or between the analog-to-digital converter and the digital orthogonal mixer; the controller is connected with the frequency divider, the digital local oscillation generator and the inverter; the simulative orthogonal mixer, the analog-to-digital converter, the digital local oscillation generator, the digital orthogonal mixer, the demodulating module, the frequency divider, the inverter and the controller are integrated in a single integrated circuit. By adopting the integrated radio broadcasting receiver, the complexity of the receiver is reduced; and the receiver with high integration level, low cost and high performance can be designed conveniently.

Description

technical field [0001] The invention relates to the field of microelectronics, in particular to an integrated radio broadcast receiver. Background technique [0002] The traditional radio broadcast receiver generally adopts a superheterodyne structure. After the radio broadcast signal received by the magnetic rod antenna is amplified by frequency selection, it is mixed with a local oscillator signal, and then the intermediate frequency signal is selected through a band-pass filter. After the intermediate frequency signal is amplified, the envelope detection is carried out to obtain the audio signal. in,. With the development of digital signal processing technology, a digital radio broadcast receiver appears. The digital radio broadcast receiver converts the radio broadcast signal into an intermediate frequency signal after performing quadrature mixing on the radio broadcast signal and two orthogonal local oscillator signals. , and then perform analog-to-digital conversion ...

AI Technical Summary

Problems solved by technology

Regardless of whether LC oscillator circuit or PLL or DDFS is used, the complexity of the receiver will be high, which is not conducive to the design of a highly integrated, low-cost, high-performance receiver

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