Title: Hemispherical coverage microstrip antenna

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.

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Inventors: De, Santis Charles M. (Neptune, NJ)
Wills, John R. (Ocean Grove, NJ)

Application Number: 06/209809
Filing Date: 1980-11-24
Publication_date: 1982-02-16
Assignee: Americal, Represented US. OF. AS.

Primary Class(es): 343/700MS 343/846
Other Classes: H01Q9/04; H01Q19/00; H01Q21/12; H01Q21/08; H01Q13/10; H01Q1/28
US Patent Ref:

4089003	May, 1978	Conroy	343/700MS	Multifrequency microstrip antenna
4218682	August, 1980	Frosch et al.	343/700MS	Multiple band circularly polarized microstrip antenna

Other Refs:
Primary Examiner: Moore, David K.
Assistant Examiner:
Attorney: Edelberg, Nathan
Murray, Jeremiah G.
Sachs, Michael C.

Claims: