Title :
Compact 1000 channel frequency synthesizer for 800 MHz land mobile radio equipments
Author :
Yuki, Shuomi ; Tanaka, Keiji ; Yamashita, Sadahiko
Author_Institution :
Yokosuka Electrical Communication Laboratory, N.T.T., Yokosuka, Japan
Abstract :
A compact 800 MHz band frequency synthesizer using direct frequency dividing method is presented. This requires neither frequency multipliers nor frequency mixers. High spectral purity of C/N better than 72 dB and a channel switching time faster than 60 ms are obtained. The features of the fabricated synthesizer unit are its small dimension of 1.5" × 1.4" × 4.8", high channel expacify of 1000 channels over 25 MHz bandwidth, and low power supply voltage of 5.0 volts.
Keywords :
Diodes; Frequency conversion; Frequency synthesizers; Land mobile radio; Land mobile radio equipment; Mobile communication; Phase locked loops; Tuned circuits; Varactors; Voltage-controlled oscillators;
Conference_Titel :
Vehicular Technology Conference, 1980. 30th IEEE
DOI :
10.1109/VTC.1980.1622865
