Fast frequency hopping locking phase-locked source

Abstract

The invention discloses a fast frequency hopping locking phase-locked source. The fast frequency hopping locking phase-locked source comprises a phase-locked loop circuit, a conditioning circuit and an MCU module; the phase-locked loop circuit comprises a frequency divider, a phase discrimination module, a charge pump, a loop filter module, a voltage-controlled oscillator VCO and a fractional divider; the phase discrimination module comprises a phase discriminator and an MOS switch; an input end of the frequency divider receives a reference signal; an output end of the frequency divider is connected with a signal input end of the phase discriminator; a signal output end of the phase discriminator is connected to the voltage-controlled oscillator VCO through the charge pump and the loop filter module; an output end of the voltage-controlled oscillator VCO is respectively connected with the conditioning circuit and the fractional divider; an output end of the fractional divider is connected with a feedback input end of the phase discriminator; a current input end of the MOS switch is connected to the loop filter module; a current output end of the MOS switch is grounded; and a control input end of the MOS switch is connected with the MCU module. The fast frequency hopping locking phase-locked source provided by the invention has the advantages of being low in power consumption, small in size and low in cost.

Description

technical field [0001] The invention relates to the communication field, in particular to a fast frequency-hopping and phase-locking source. Background technique [0002] Frequency hopping communication is a communication technology in which the carrier frequency hops randomly within a wide frequency band. It has strong anti-interference performance, anti-interception performance, anti-attenuation performance, etc., and can also maximize the use of spectrum resources. The military field has developed rapidly. With the advancement of wireless communication technology, frequency hopping technology has rapidly expanded to the civilian field with its unique advantages. [0003] However, for now, the fast frequency hopping source is often implemented by DDS combination, or multi-chip phase-locked source switching, and phase-locks different frequency hopping frequencies, but these two methods undoubtedly increase the cost of materials and greatly increase the cost. The power cons...

AI Technical Summary

Problems solved by technology

[0003] However, for now, the fast frequency hopping source is often realized by DDS combination, or multi-chip phase-locked source switching, and phase-locks different frequency hopping frequencies, but these two methods undoubtedly increase the cost of materials and greatly improve Reduce power consumption and increase the volume of the lock-in source

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