800 MHz frequency synthesizer and 145 MHz SAW FM modulator for 800 MHz cellular land mobile radio unit

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.