Research to Develop Microwave Acoustic Surface Wave Delay Lines.
Final rept. 1 Feb 71-31 May 72,
LITTON INDUSTRIES SAN CARLOS CALIF ELECTRON TUBE DIV
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The report presents the results of work on a contract for research in the design and fabrication of microwave acoustic surface wave delay lines. Delay lines were made using a variety of substrate materials, including lithium niobate, lithium tantalate, bismuth germanium oxide, and quartz, with center frequencies as high as 1130 MHz. Special delay lines were delivered which had transducers that were designed to have specified bandpass characteristics and minimum ripple in the frequency response. In one instance, match to the required shape as close as 0.04 dB was obtained for the frequency region within the 3 dB bandwidth. The salient features of the optical fabrication process for producing transducers with line widths as small as 0.7 micrometer are included in the description of the delay line fabrication procedure. Author
- Line, Surface and Bulk Acoustic Wave Devices