Circularly polarized omnidirectional in-building signal...

Details Circularly polarized omnidirectional in-building signal... Circularly polarized omnidirectional in-building signal...

2007-12-12

2011-10-11

Lee, John J (Department: 2618)

Telecommunications

Carrier wave repeater or relay system

Directive antenna

C455S066100, C455S003020, C455S271000

Reexamination Certificate

active

08036594

ABSTRACT:
A rebroadcasting apparatus for mobile media includes a receiving antenna and a transmitting antenna. The signal to be rebroadcast is received with a circularly polarized directional antenna. The transmitting antenna has circular polarization opposite to the polarization of the receiving antenna. Amplifiers and filters may be included between receiving and transmitting antennas to regulate retransmitted signal quality. The transmitting antenna uses one or more bays of quasi-helical dipole radiators excited using manifold feed equipped with tuning paddles. The transmitting antenna may be formed from light-weight sheet metal or other readily mass-produced materials. The transmitting antenna may be housed within an ordinary security camera enclosure or similar radio-transparent housing.

REFERENCES:
patent: 7649505 (2010-01-01), Schadler
patent: 2007/0021095 (2007-01-01), Cheng et al.
John L. Schadler, U.S. Appl. No. 11/826,100 entitled “Circularly Polarized Low Wind Load Omnidirectional Antenna Apparatus and Method,” filed Jul. 12, 2007.

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