Advanced Printed Circuit Board Design Methods for Compact Optical Transceiver

As the warfighter is increasingly using more highly integrated instruments, e.g. a laser rangefinder (LRF) combined with a laser designator and an imager, the need to decrease the size of these components becomes more important. Compact small munition applications of rangefinders particularly place an emphasis on size of the optical front end. In order to make the transceiver more compact, special attention needs to be paid to the PCB design in order to shield the receiver from the Electro-Magnetic Interference (EMI) generated by the short pulses from the laser pulse circuit. We propose to improve the receiver sensitivity by reducing the EMI coupled from the transmitter to the receiver by using several approaches. The sum of these approaches should enable us to realize an ultra-compact transceiver with high sensitivity so that only a small collection lens is required.