Phase slope equalizer for satellite antennas

Details Phase slope equalizer for satellite antennas Phase slope equalizer for satellite antennas

1987-11-30

1989-09-19

Tarcza, Thomas H.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

333232, 343778, H01P 706

Patent

active

048685755

ABSTRACT:
A phase slope equalizer is a recent device used to replace phase shifters in feed networks for satellite communications antennas. The phase slope equalizer has been further refined so that, once manufactured, it does not require tuning and is well suited to integration in larger systems. Three main embodiments are disclosed, one based on a waveguide configuration and the other two on a square coaxial configuration. In the case of the waveguide configuration half wavelength short-circuited stubs spaced by a quarter wavelength are used and in the case of one of the square coaxial configurations half wavelength open-circuited stubs spaced by a quarter wavelength are used. The third embodiment uses quarter wavelength short-circuited stubs spaced by a quarter wavelength.

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JPO Abstract #50-79681, Suga, 6/75.
IEEE Transactions on .mu.wave Theory and Techniques 4/67 Characteristics of Waveguide Resonant Iris Filters.
G. L. Matthaei et al. "Microwave Filters, Impedance-Matching Networks, and Coupling Structures", 1964, McGraw-Hill Book Co., New York, U.S.-pp. 25, 423, 595, 596, 599, 600, 601, 605, 609, 701, 726, 727, 746, 755, 758, 862, 765, 766, 838, 839, 995.

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