Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1984-06-07
1986-12-30
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
343778, 333231, H01Q 322, H01Q 1300, H01P 706
Patent
active
046332588
ABSTRACT:
A microwave antenna feed network dispenses with the conventional phase shifters. Instead, the required phase relationships between the different individual antenna components is achieved by means of a new device, known as a phase slope equalizer, placed in each feed line. This device is formed of a section of waveguide 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.
REFERENCES:
patent: T102002 (1982-07-01), Jobera
patent: 2461005 (1949-02-01), Southworth
patent: 2642529 (1953-06-01), Frankel
patent: 2905940 (1959-09-01), Spencer et al.
patent: 3108237 (1963-10-01), Reuvers et al.
patent: 3275952 (1966-09-01), Korman
patent: 3553692 (1971-01-01), Drabowitch
patent: 3611400 (1971-10-01), Nagal
patent: 3911442 (1975-10-01), Hatch
patent: 3955161 (1976-05-01), Macturk
patent: 4041421 (1977-08-01), Owlett
patent: 4117491 (1978-09-01), Hanna et al.
patent: 4321568 (1982-03-01), Joyal et al.
Martin Alain
Mok Chuck K.
Blum Theodore M.
Cain David Charles
Spar Aerospace Limited
LandOfFree
Phase slope equalizer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Phase slope equalizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase slope equalizer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1550741