SMALL SIGNAL FUNCTIONAL CIRCUITS.
Quarterly progress rept. no. 3, 1 Jan-31 Mar 65,
MOTOROLA INC PHOENIX ARIZ SEMICONDUCTOR PRODUCTS DIV
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The report outlines the third quarter of effort covering the development of small signal functional circuits. During this quarter, the front-end integrated circuits r-f amplifier, first oscillator, and second oscillator mixer circuits underwent processing. These circuits have completed diffusion and metalization processing and are presently being assembled. Evaluation of the breadboard developmental model receivers continued during this time period. Special emphasis was given to the selection of the 455 i-f filter. A decision was made to modify the receiver to be more compatible with the system requirements of the ANPRR-9 receiver and the ANPRT-4 transmitter. In line with this change, the power supply was converted from 6 volts to 3 volts, and a new 3 volt audio output stage was designed to deliver 7 mw of power to an audio transducer. The squelch, discriminator, and i-f selectivity were modified to operate over a 15 kc bandwidth. The receiver package and printed circuit board were redesigned to facilitate packaging of the receiver in the ANPRR-9 housing. Author