Ferrite phase shifter and phase array radar system

Details Ferrite phase shifter and phase array radar system Ferrite phase shifter and phase array radar system

2006-01-19

2008-08-26

Lee, Benny (Department: 2817)

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

Directive

Including a steerable array

C333S161000

Reexamination Certificate

active

07417587

ABSTRACT:
A phase shifter comprises a substrate, a ground plane formed on a first surface of the substrate, a support structure positioned on a second surface of the substrate opposite the first surface, three parallel, non-co-planar microstrip lines supported by the support structure above the second surface of the substrate, a ferrite element supported by the support structure between the second surface of the substrate and the three non-co-planar microstrip lines, and means for applying a magnetic field to the ferrite element.

REFERENCES:
patent: 4102572 (1978-07-01), O'meara
patent: 4816787 (1989-03-01), Stern et al.
patent: 4881052 (1989-11-01), Stern et al.
patent: 5223808 (1993-06-01), Lee et al.
patent: 5828271 (1998-10-01), Stitzer
patent: 5854610 (1998-12-01), Wojtowicz et al.
patent: 2003/0063366 (2003-04-01), Hunt
Sorensen et al. Low-Cost Nonplanar Microstrip-Line Ferrite Phase Shifter Utlizing Circular Polarization, IEEE Microwave and Wireless Components Letters, vol. 14, No. 1, Jan. 2004.
Sorensen et al. Low-Cost Nonplanar Microstrip-Line Ferrite Phase Shifter Utlizing Circular Polarization, 0-7803-8197-1/03 (c) 2003 IEEE.

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