Claims
- 1. An integrated dual mode antenna, comprising:a quadrifilar antenna having a plurality of spaced apart windings and a feed connection for connection with a first feed; and a monopole antenna positioned within said quadrifilar antenna and independent of said quadrifilar antenna, said monopole antenna having a feed connection for connection with a second feed different from said first feed, said windings of said quadrifilar antenna being at an angle of between 36° to 48° relative to said monopole antenna.
- 2. The integrated antenna as set forth in claim 1, wherein said quadrifilar antenna includes four windings.
- 3. The integrated antenna as set forth in claim 1, wherein coupling from said monopole antenna to said quadrifilar antenna is in phase.
- 4. The integrated antenna as set forth in claim 1, wherein said windings are at a 45° angle relative to said monopole antenna.
- 5. The integrated antenna as set forth in claim 1, wherein said monopole is coaxially positioned within said quadrifilar antenna.
- 6. The integrated antenna as set forth in claim 1, wherein said windings of said quadrifilar antenna are mounted to a polymeric cylinder.
- 7. The integrated antenna as set forth in claim 1, wherein said quadrifilar antenna transceives circularly polarized fields and said monopole antenna transceives linearly polarized fields independently of said quadrifilar antenna.
- 8. The integrated antenna as set forth in claim 1, wherein said plurality of windings are equidistant.
- 9. The integrated antenna as set forth in claim 1, wherein a foamed polymer is positioned between said quadrifilar antenna and said monopole antenna.
- 10. The integrated antenna as set forth in claim 9, wherein said foamed polymer surrounds said monopole antenna.
- 11. A method of forming a dual mode integrated antenna, comprising the steps of:providing a quadrifilar antenna for transceiving circularly polarized fields; providing a monopole antenna for transceiving linearly polarized fields; providing a separate feed connection for each of said guadrifilar antenna and said monopole antenna; co-locating said monopole antenna within said quadrifilar antenna and independent of said quadrifilar antenna; and phase coupling said monopole antenna to said quadrifilar antenna.
- 12. The method as set forth in claim 11, further including the step of positioning a rigid polymeric foam material between said monopole antenna and said quadrifilar antenna.
- 13. The method as set forth in claim 12, wherein said polymeric foam completely surrounds said monopole antenna.
Parent Case Info
This appln claims the benefit of U.S. Provisional No. 60/093,675 filed Jul. 22, 1998.
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Provisional Applications (1)
|
Number |
Date |
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|
60/093675 |
Jul 1998 |
US |