Directional antenna shield for a slotted opening
First Claim
1. A shield for use wth a rotatable elongated receiver comprising an insulator coupled to the outside of the receiver, said insulator having a through-going slot substantially over its entire length and thus exposing a portion of the receiver, a slotted metal shield coaxially coupled to the outside of said insulator and fully insulated from said receiver and having a through-going slot in registry with the slot on said insulator, means for fixing said insulator and shield in fixed relationship to each other and to the receiver and feed means coupled to said receiver.
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Accused Products
Abstract
A shield for use with a rotatable, elongated, cylindrical transmitter having a cylindrical insulator and a metal cylindrical shield on its exterior with both the insulator and shield having an elongated, slotted opening to permit reception of signals originating from one direction, but which shields signals originating from peripheral directions.
17 Citations
3 Claims
- 1. A shield for use wth a rotatable elongated receiver comprising an insulator coupled to the outside of the receiver, said insulator having a through-going slot substantially over its entire length and thus exposing a portion of the receiver, a slotted metal shield coaxially coupled to the outside of said insulator and fully insulated from said receiver and having a through-going slot in registry with the slot on said insulator, means for fixing said insulator and shield in fixed relationship to each other and to the receiver and feed means coupled to said receiver.
Specification
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- Resources
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Current AssigneeArthur W. Murdock
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Original AssigneeArthur W. Murdock
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InventorsMurdock, Arthur W.
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Primary Examiner(s)Moore, David K.
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Application NumberUS05/909,949Time in Patent Office634 DaysField of Search343/841, 343/842, 343/767-770, 333/84 LUS Class Current343/841CPC Class CodesH01Q 1/526 Electromagnetic shieldsH01Q 13/12 Longitudinally slotted cyli...H01Q 9/30 with feed to end of elongat...
