Communications: radio wave antennas – Antennas – Microstrip
Patent
1980-11-24
1982-02-16
Moore, David K.
Communications: radio wave antennas
Antennas
Microstrip
343846, H01Q 1310, H01Q 128
Patent
active
043161944
ABSTRACT:
A single antenna having hemispherical coverage with circular polarization very low axial ratio is disclosed. Its pancake structure comprises two stacked microstrip antennas, one atop the other, each fed phase shifted in relation to the other.
Used as transmitter or receiver antenna, it replaces conventional hemispherical types with an extremely compact and relatively inexpensive device.
REFERENCES:
patent: 4089003 (1978-05-01), Conroy
patent: 4218682 (1980-08-01), Frosch et al.
De Santis Charles M.
Wills John R.
Edelberg Nathan
Moore David K.
Murray Jeremiah G.
Sachs Michael C.
The United States of Americal as represented by the Secretary of
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