Content Inside :
This paper describes the design and the implementation of a DSP-based digital IF (Intermediate Frequency) radio receiver in a low-power 0.18µm CMOS technology. Thanks to an advanced System-on-Chip mixed analog and digital solution, the proposed device performs the demodulation of both AM and FM stereo signals, digitized at the IF by means of a high dynamic range ??? bandpass analog to digital converter. Nowadays, in the AM/FM radio receiver scenario the general trend aims at the software radio, a fully digital solution encompassing RF digitization and signal processing in a DSP. The block diagram of the proposed high-performance radio receiver is shown in Fig. 2. The relevant features of this device are listed below. the device either operates as a stand-alone AM/FM stereo radio receiver or it is used in an array system for high-end dual tuner diversity applications. Analog Blocks. This module generates all the clocks and synchronization signals for the device and the reference VCO clock for the tuner. The quartz-driven 74.1MHz oscillator works at the 3 rd overtone. In order to guarantee maximum performance of the IF-ADC, the oscillator has been designed with less than 15ps rms frequency-jitter; in addition, high frequency stability over temperature is obtained exploiting a constant-gm circuit. In slave-mode the oscillator behaves as a buffer, and an external clock drives the chip. The AM/FM detector is a programmable DSP peripheral used to detect the phase, amplitude and frequency information of the input complex signal (I/Q signals).
Tags : fm radio receiver, fm stereo radio, phase amplitude, programmable dsp, analog to digital converter, high dynamic range, external clock, performance radio, synchronization signals, frequency radio, digital solution, slave mode, software radio, intermediate frequency, relevant features
If you see unrelated pdf files with the description or copyrighted material published, please report to us, we'll correct/delete it it as soon as possible.NONE OF THOSE MATERIALS ARE HOSTED IN THIS SERVER NOR UPLOADED BY ME IN SOMEONE'S SERVERS. Read our DISCLAIMER for more detail.
We are neither affiliated with authors and brands nor responsible for its content and change of content.
Information contained herein is provided "as is" without warranty of any kind, either expressed or implied, including any warranty of merchantability or fitness for a particular purpose. In no event shall ANYONE be held liable for any loss of profit, special, incidental, consequential, or other similar claims.