Communications: radio wave antennas – Antennas – Plural separate diverse type
Patent
1985-03-04
1987-01-13
Lieberman, Eli
Communications: radio wave antennas
Antennas
Plural separate diverse type
343781CA, 343909, H01Q 2128, H01Q 1918
Patent
active
046367977
ABSTRACT:
A dual mode antenna that allows both millimeter wave radiated energy and rared radiated energy to enter a single aperture and propagate through a common transmission device to a point where the respective energies are divided to follow separate paths for subsequent processing. An electromagnetic transmission guide for waveguide comprises first and second parallel tubular members having beam directing reflectors and lenses therein for maintaining low-loss, gaussian beam propagation of radiated energy therethrough. Cassegrainian optics of a cassegrainian antenna system are positioned for directing the millimeter and infrared energy into a common, circular end of said tubes where the energy impinges on beam directing means that separates the respective energies, directing them into the respective parallel tubes along two separate and distinct paths.
REFERENCES:
patent: 3698001 (1972-10-01), Koyama et al.
patent: 4282527 (1981-08-01), Winderman et al.
patent: 4573054 (1986-02-01), Bouko et al.
Green, Jr. Augustus H.
Passmore Ronald C.
Saffold James A.
Bush Freddie M.
Garvin, Jr. John C.
Lieberman Eli
The United States of America as represented by the Secretary of
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