Phase slope equalizer

Details Phase slope equalizer Phase slope equalizer

H - Electricity

01

P

333/26, 351/59

H01P 1/18 (2006.01) H01P 1/207 (2006.01) H01Q 13/00 (2006.01)

Patent

CA 1234912

6573-15 ABSTRACT A microwave antenna feed network dispenses with the conventional phase shifters. Instead, the required phase rela- tionships between the different individual antenna components is achieved by means of a new device, known as a phase slope equal- izer, placed in each feed line. This device is formed of a section of wavequide containing one or more resonant circuit elements. Each element comprises, for example, a pair of spaced inductive posts and capacitive tuning screw, or an inductive iris and a capacitive tuning screw, or a resonant slot. The phase slope equalizer exhibits a substantially constant slope phase shift/frequency response curve extending from a positive phase shift through zero phase shift at midband to a negative phase shift. The device is simpler and smaller than the conventional phase shifter and fewer are required thereby reducing costs.

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