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- W2144987320 abstract "A charge-coupled device (CCD) has been integrated with a SAW delay line to produce an electronically programable analog matched filter in which the filter function is controlled by the charge pattern clocked into the CCO. A prototype with an input signal bandwidth of 40 MHz centered around 107 MHz, a correlation time of 3.5 us and an analog input reference clock rate of 100 kHz has been fabricated and tested. This device consists of a LiNb03 delay line coupled across a gap to a silicon substrate. An output e lectrode on the LiNb03 is capacitively coupled to an array of 300 conducting fingers connected to a 300-stage CCD shift register on the silicon substrate. Nonlinearities in the silicon multiply the RF fields accompanying a SAW signal with dc potentials programed on the f ingers by the CCD, and the local product terms are summed on the o utput electrode to produce the d esired cross-corrdation between reference and signal waveforms. Operation as a matched filter for a 3.25-us-long 13-bit Barker-encoded signal yields a peak correlation level of -41 dBm." @default.
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- W2144987320 date "1979-01-01" @default.
- W2144987320 modified "2023-09-24" @default.
- W2144987320 title "A CCD-Programmable SAW Matched Filter" @default.
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- W2144987320 doi "https://doi.org/10.1109/ultsym.1979.197309" @default.
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