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 Title: |
US5923304:
Omnidirectional antenna scheme
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Edwards, Keith Russell; Paignton, United Kingdom
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| Assignee: |
Nortel Networks Corporation, Montreal, Canada
other patents from NORTEL NETWORKS LIMITED (769747) (approx. 2,727)
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| Published / Filed: |
1999-07-13
/ 1997-04-25
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| Application Number: |
US1997000845525
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| IPC Code: |
Advanced:
H01Q 21/29;
H04B 7/06;
Core:
H01Q 21/00;
H04B 7/04;
IPC-7:
H01Q 21/00;
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| ECLA Code: |
H01Q21/29; H04B7/06;
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| U.S. Class: |
Current:
343/893;
343/795;
Original:
343/893;
343/795;
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| Field of Search: |
343/795,893
455/422,509,517,524
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| Priority Number: |
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| Abstract: |
An antenna arrangement comprising at least 4 upright omnidirectional antenna is disclosed. The omnidirectional antennas are spaced apart in an irregular fashion. By providing at least 4 omnidirectional antenna in a irregular spaced apart arrangement, spatial diversity is provided, at any distant point from the antennas, by at least 3 antennas. Thus the minimum gain, for a four antenna arrangement, approaches 0.75 of the maximum gain when taking relative position of a receiver into account. A method of operating such an omnidirectional antenna scheme is also disclosed
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| Attorney, Agent or Firm: |
Crane, John D. ;
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| Primary / Asst. Examiners: |
Font, Frank G.; Nguyen, Tu T.
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
DE FI FR GB SE
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| Family: |
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First Claim:
Show all 4 claims |
I claim:
1. A cellular radio communications base station antenna arrangement comprising at least four upright omnidirectional antennas each omnidirectional antenna being connected via transmission lines to a transmitter and receiver, wherein the omnidirectional antenna are arranged such that the axes of the antenna are spaced apart in a irregular fashion.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 1 U.S. patent(s) that reference this one
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