时分多址(TDMA)通信系统频率源的研制

频率合成器是现代电子系统的重要组成部分 ,在通信、雷达、电子对抗、导航、广播电视、遥测遥控、仪器仪表等许多领域都得到广泛的应用。在雷达等通信设备中 ,它为发射机的调制器提供载频信号 ,也为接收机或发射机的混频器提供稳定可靠的本振源。该锁相频率合成器体积小、成本低、通用性强、使用灵活方便 ,频率控制可以通过硬件 (面板 )实现 ,也可以通过软件写入 ,工作频带 :3 80～ 4 40 MHz,频率步进 1 .2 5 MHz,输出功率≥7d Bm,相位噪声≥ -95 d Bc/Hz/1 0 k Hz。该频率合成器双路输出 ,收、发双工工作 ,已成功地用于时分多址 (TD-MA)通信网中

The Research of Frequency Synthesizer for TDMA Communication System

The frequency synthesizer is one main part of modern electronic systems, which has been widely used in the fieilds of communication such as telecommunication, radar, navigation, broadcast, television, instrument and so on. In communication equipment, for example radar, frequecy synthesizer provides the carrier frequency of mudulator in transmitter, as well as local oscillator for mixer in receiver or transmitter. The frequency synthesizer in this paper can provide stable L0 signal for both the transmitter and receiver simultaneously. It is low cost, small package, with the following specification: frequency range:380-440 MHz, frequency step: 1.25 MHz, output power: ≥7 dBm, phase noise:≥-95 dBc/Hz/10 kHz. Now it has been used in TDMA communication system successfully.