A simplified GPS C/A reciever front end with low noise performance
D. D. Davis, Alan Clements · NASA Technical Reports Server (NASA) · 1984
A redesign of the antenna electronics package for the NBS/GPS C/A receiver has resulted in significantly reduced cost and improved performance. Major improvements include a simplified and more reliable multiplier/mixer, elimination of all twelve piston trimmer tuning capacitors in the original design, elimination of expensive bandpass filters, less expensive antenna and a simplified packaging scheme.