H-plane hermetic sealed waveguide probe
First Claim
1. An H-field probe for coupling microwave energy from a waveguide having a waveguide opening of a predetermined shape defining an H-field plane and an E-field plane, the probe comprising:
- a dielectric substrate having opposing sides;
a first conductor disposed on one of said opposing sides of said substrate, parallel to said H-field plane; and
a transition conductor disposed on the other of said opposing sides of said substrate, the transition conductor configured to couple microwave energy from the H-field plane to a direction parallel to the E-field plane, said transition conductor configured to be coupled to an external microwave circuit, wherein said transition conductor is provided with two leg portions defining a first leg portion and a second leg portion joined by a bend portion.
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Accused Products
Abstract
An H-plane waveguide probe includes a microstrip formed on a dielectric substrate with a loop conductor generally configured in the shape of waveguide on one side and adapted to capture an incoming H-plane signal. A transition conductor formed on an opposing side of the substrate with a first leg and a second leg, connected together by a bend portion. The first leg of the transition conductor is generally parallel to the H-plane for coupling microwave energy from the waveguide to the microstrip. The second leg of the transition conductor is parallel to the E-field and is used to change the direction of the captured microwave energy along the H-plane direction to the E-plane direction. In order to optimize power transfer, the impedance of the loop conductor is selected to be about the same as the waveguide. The transition conductor is used to convert the E-field energy to a 50Ω impedance, for example, for connection to an external microwave circuit.
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Citations
17 Claims
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1. An H-field probe for coupling microwave energy from a waveguide having a waveguide opening of a predetermined shape defining an H-field plane and an E-field plane, the probe comprising:
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a dielectric substrate having opposing sides;
a first conductor disposed on one of said opposing sides of said substrate, parallel to said H-field plane; and
a transition conductor disposed on the other of said opposing sides of said substrate, the transition conductor configured to couple microwave energy from the H-field plane to a direction parallel to the E-field plane, said transition conductor configured to be coupled to an external microwave circuit, wherein said transition conductor is provided with two leg portions defining a first leg portion and a second leg portion joined by a bend portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus comprising:
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a waveguide defining a waveguide opening for coupling microwave energy to a first external microwave circuit;
a flange disposed on one end of said waveguide; and
a waveguide probe for coupling microwave energy from said waveguide to a second external microwave circuit, said waveguide probe configured to close said waveguide opening, said waveguide probe configured to couple H-field microwave energy from said waveguide to said waveguide probe, said waveguide probe comprising a microstrip circuit which includes a dielectric substrate with a loop conductor on one side surface thereof and a transition conductor on an opposing side surface thereof, said loop conductor configured in the shape of said waveguide opening and wherein said transition conductor is provided with a first leg portion and a second leg portion perpendicular to one another and joined together by a bend portion. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification