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DETECTION OF FM USING PHASE LOCKED LOOP(PLL)

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DETECTION OF FM USING PHASE LOCKED LOOP(PLL)
DETECTION OF FM USING PHASE LOCKED LOOP(PLL)

DETECTION OF FM USING PHASE LOCKED LOOP(PLL)

Category: Electronics

Model No:IAC-217

The phase locked loop or PLL is a particularly useful circuit block that is widely used in radio frequency or wireless applications. In view of its usefulness, the phase locked loop or PLL is found in many wireless, radio, and general electronic items from mobile phones to broadcast radios, televisions to Wi-Fi routers, walkie talkie radios to professional communications systems and vey much more.

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Product Description

The phase locked loop or PLL is a particularly useful circuit block that is widely used in radio frequency or wireless applications. In view of its usefulness, the phase locked loop or PLL is found in many wireless, radio, and general electronic items from mobile phones to broadcast radios, televisions to Wi-Fi routers, walkie talkie radios to professional communications systems and vey much more.

Features:

  •     FM demodulation:   One major phase locked loop application is that of a FM demodulator. With PLL chips now relatively cheap, this PLL applications enables high quality audio to be demodulated from an FM signal.
  •     AM demodulation:   Phase locked loops can be used in the synchronous demodulation of amplitude modulated signals. Using this approach, the PLL locks onto the carrier so that a reference within the receiver can be generated. As this corresponds                                        exactly to the frequency of the carrier, it can be mixer with the incoming signal to synchronous demodulate the AM.
  •     Indirect frequency synthesizers:   Use within a frequency synthesizer is one of the most important phase locked loop applications. Although direct digital synthesis is also used, indirect frequency synthesis forms one of the major phase locked     loop                                                             applications.
  •     Signal recovery:   The fact that the phase locked loop is able to lock to a signal enables it to provide a clean signal, and remember the signal frequency if there is a short interruption. This phase locked loop application is used in a number of areas                                          where signals may be interrupted for short periods of time, for example when using pulsed transmissions.
  •     Timing distribution:   Another phase locked loop application is in the distribution precisely timed clock pulses in digital logic circuits and system, for example within a microprocessor system.

Technical Specifications:

  •     demonstrates how the nearby transmitter (800 kHz away) transmitting at –25 dBm power could
  •      3GPP TS 36.104 is 12.5%
  •     EVM becomes critical. For 16-QAM, the required minimum
  •      the integration limits are quite wide, starting at 1 kHz and continuing to 100 MHz. 
  •     oscillator (LO) in a range between 7.4 GHz to 7.6 GHz, with 1 MHz of channel resolution.
  •     HMC704 is used in a fractional-N configuration

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