| MICROWAVE ACOUSTIC DELAY LINE AND RELATED ACTIVE DEVICES. (2005) | |||||||||
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| Theoretical and experimental investigations of electroacoustic interactions were conducted as a basis for development of active and passive acoustic devices. To demonstrate these phenomena, breadboard models of a 60 Mc/sec electroacoustic amplifier with a 75 db maximum acoustic gain, a 200 micro-sec lossless delay line operating at 60 Mc/sec, and a 1 Mc/sec acoustoelectric oscillator, were constructed. Both bonded quartz and integral transducers were investigated. An integral delay line and an amplifier demonstrate the use of compensated-layer CdS transducers. Thermal effects are discussed including methods of heat sinking the crystals for use in continuous wave (CW) devices. Combination of Hall and negative-resistance elements were breadboarded for controlling frequency and impedance. (Author) | |||||||||
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