The electronic circuitry and physical structure of 12 two‐phase repeaters made for use in a field evaluation test are described. The repeaters consist of four kinds of circuitry; millimeter‐wave circuits covering the 40 to 110 GHz range, IF circuits at 1.2 to 1.6 GHz, pulse circuits for the 274 Mb/sec pulse stream, and power supply circuits. All repeaters have been successfully operated over the trial repeater link in northern New Jersey. The results of this repeater development effort are the basis for an estimate of the performance obtainable in future four‐phase repeater performance. This estimate has been used in the system repeater spacing calculations.
Waveguide networks operating in the millimeter wave region to separate the 62 transmitter and 62 receiver frequency spectra at each end of every waveguide transmission line are described. The overall loss of these networks for the various channels has been designed to complement the shape of the transmission medium loss in order to yield maximum repeater spacing. General descriptions of the design and performance of all filters used in the complete channelization array are given.
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