Back to results
US 4,283,727 AGranted
Separable microwave coupling and antenna using same
AssigneeThomson-CSF
InventorsJacques Martel, Roger Famin
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeThomson-CSF
InventorsJacques Martel, Roger Famin
Estimating the term…
A transmission path between a source of microwaves, such as a radar transceiver, and a load rectilinearly movable with reference thereto, such as an aerial mounted on a retractable mast of a submarine periscope, comprises two relatively movable parallel waveguides respectively connected to a pair of coaxial ancillary guide portions with mating extremities which are separated from each other in one relative position and are interfitted in another relative position of the source and the load. The male guide portion is externally grooved to form microwave chokes whose effect is enhanced by a peripheral layer of energy-absorbent coating disposed beyond these chokes as seen from the female guide portion. The main waveguides may be coaxial with the interfitting guide portions or may extend parallel thereto and be connected to them by respective elbows.
In combination, relatively movable first and second main waveguides respectively connected to a source of microwaves and to a load, and a separable coupling between said main waveguides establishing a continuous transmission path for said microwaves in a first relative position thereof and interrupting said transmission path in a second relative position thereof, said coupling comprising a male and a female ancillary guide portion each rigidly connected with a respective main waveguide, at least the ancillary guide portion connected to said first main waveguide being provided with a dummy load, said guide portions being coaxially disposed and being interfitted in said first relative position but being axially separated in said second relative position.
Dependencies are inferred from the claim text.