Frequency synthesizer for ultrashort-wave frequency-hopping radio station

• Main Authors: HUANG WENJIE, PU YUNLONG, ZHOU QIANG, SUN YUANYUAN, SHUAI QI, YANG BIN, YIN MINGQI, CHEN FEI
• Format: Patent
• Language: English
• Published: 15.04.2015
• Subjects: AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES; BASIC ELECTRONIC CIRCUITRY; ELECTRICITY

The utility model relates to the technical field of frequency synthesizers, and discloses a frequency synthesizer for an ultrashort-wave frequency-hopping radio station. In the frequency synthesizer, the output end of a crystal oscillator is electrically connected with the input end of an R frequency divider, the output end of the R frequency divider is electrically connected with the first input end of a phase discriminator, and the output end of the phase discriminator is electrically connected with the input end of a charge pump; the output end of the charge pump is electrically connected with the input end of a loop filter, and the output end of the loop filter is connected with the input end of a voltage controlled oscillator; the output end of the voltage controlled oscillator is electrically connected with the input end of a K frequency divider and the input end of a fraction frequency divider, the output end of the fraction frequency divider is electrically connected with the second input end of the phase discriminator, the frequency of input signals of the fraction frequency divider is P times that of output signals of the fraction frequency divider, and P can be greater than 1 or a fraction; and frequency of output signals at the output end of the K frequency divider is used as the output frequency of the frequency synthesizer.