Design of Multi-PLL Board Using ARM7 Controller

This paper presents the design of Multi-Phase Locked Loop (PLL) board which aims to provide different high frequency oscillator signals ranging from 960 MHz to 1.33 GHz. The designed system will act as an oscillator board for various radio frequency application within the specified range. Compactness of overall board size and noise reduction were the key factors considered while designing the board. A wideband frequency synthesizer chip, which is controlled by ARM7 controller, is used to obtain high frequency signals. RF line shielding and its length matching has been discussed and implemented to achieve stability at the output and the reduction of on-board interference thereby improving its usefulness in practical applications.