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US 2002/0163468 A1Published application
Stripline fed aperture coupled microstrip antenna
AssigneeRaytheon Company
InventorJoseph M. Anderson
Life of this patent
Estimating the term…
Abstract
An aperture coupled microstrip patch antenna coupling circuit. Electromagnetic energy propagating along a stripline feedline is coupled through one of the ground plane surfaces through a tuned aperture to an adjacent microstrip feedline device, which may be a microstrip patch antenna. Undesirable propagation modes are suppressed by enclosing the aperture-coupled slot in a non-resonant cavity. Impedance matching is accomplished with an impedance matching section.
Claims30
An stripline aperture coupling device, comprising:
- a stripline feedline having first and second ground planes and a feedline;
- an aperture opening formed in said first ground plane, and
- a means for controlling electromagnetic coupling between said feedline and said aperture opening.
An aperture coupled antenna, comprising:
- a stripline feedline having a first ground plane and a second ground plane positioned substantially parallel to each other with a first dielectric material disposed therebetween, and having a feedline with a first end located within said first dielectric material;
- a resonant opening, formed through said first ground plane, located adjacent to said first end of said feedline;
- a non-resonant cavity, formed from a plurality of conductors connected between said first and second ground planes, located about said resonant opening;
- an antenna located adjacent to said resonant opening on the opposite side of said first ground plane from said feedline, and wherein
- electromagnetic energy is coupled between said feedline and said antenna through said resonant opening.
2 more elements
A stripline to microstrip coupling circuit, comprising:
- a stripline feedline having a first ground plane and a second ground plane positioned substantially parallel to each other with a first dielectric material disposed there between, and having a feedline with a first end located within said first dielectric material;
- a resonant opening, formed through said first ground plane, located adjacent to said first end of said feedline;
- a non-resonant cavity, formed from a plurality conductors connected between said first and second ground planes, located about said resonant opening;
- a stripline conductor supported by a second dielectric material on the opposite side of said first ground plane from said feedline, said stripline conductor located adjacent to said resonant opening, and wherein
- electromagnetic energy is coupled between said feedline and said stripline conductor through said resonant opening.
2 more elements
Dependencies are inferred from the claim text.