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RF test fixture for adaptive-antenna radio systems

  • US 6,023,203 A
  • Filed: 10/14/1998
  • Issued: 02/08/2000
  • Est. Priority Date: 10/14/1998
  • Status: Expired due to Term
First Claim
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1. A radio-frequency combiner-splitter, comprising:

  • (a) a microwave cavity with an internal volume generally enclosed by a conductive skin;

    (b) a plurality of radio-frequency access ports placed at a set of locations and penetrating said conductive skin; and

    (c) a corresponding plurality of antennas each associated with individuals of said plurality of radio-frequency access ports and providing for near-field free-space intercommunication of radio signals within said internal volume amongst said radio-frequency access ports;

    wherein, individual members of the plurality of radio-frequency access ports are associated in groups, and any particular radio-frequency access port of the plurality of radio-frequency access ports presents a spatial signature to any grouping of the plurality of radio-frequency access ports that does not include the particular radio-frequency access port, and said spatial signatures occurring as a result of the particular way the plurality of radio-frequency access ports have been placed.

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