Title :
800 MHz frequency synthesizer and 145 MHz SAW FM modulator for 800 MHz cellular land mobile radio unit
Author :
Urabe, Shuuji ; Yuki, Shuomi ; Matsuura, Takashi ; Iwahashi, Koji
Author_Institution :
Nippon Telegraph and Telephone Public Corporation, Kanagawa, Japan
Abstract :
This paper introduces an advanced 800 MHz direct-oscillation frequency, synthesizer and 145 MHz SAW FM modulator that do not use multipliers or mixers but instead uses four newly developed devices: An 800 MHz VCO, a 145 MHz SAW VCO, a two-modulus prescaler IC which is operational up to 1 GHz, and a C-MOS PLL LSL.
Keywords :
Frequency conversion; Frequency modulation; Frequency synthesizers; Integrated circuit synthesis; Land mobile radio; Land mobile radio cellular systems; Phase locked loops; Surface acoustic waves; Telephony; Voltage-controlled oscillators;
Conference_Titel :
Vehicular Technology Conference, 1982. 32nd IEEE
DOI :
10.1109/VTC.1982.1623036
