Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1975-04-24
1976-03-30
Lieberman, Eli
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343822, 343846, H01Q 138, H01Q 928
Patent
active
039478505
ABSTRACT:
A notch fed electric microstrip dipole antenna consisting of a thin electally conducting, rectangular-shaped element formed on one surface of a dielectric substrate, the ground plane being on the opposite surface. The length of the element determines the resonant frequency. The feed point is located in a notch along the centerline of the antenna length and the input impedance can be varied by moving the feed point along the centerline of the antenna without affecting the radiation pattern. Of all the many types of microstrip antennas built to date, this antenna offers the best advantages as far as arraying of the elements are concerned. The notched antenna can be arrayed using microstrip interconnecting transmission lines. The corner losses in the clad material and the width of the notch determines how narrow the element can be made. The purpose of the notch feed system is to interconnect any array of elements at the elements' optimum feed point using microstrip transmission lines.
REFERENCES:
patent: 3810183 (1974-05-01), Krutsinger et al.
Lieberman Eli
Sciascia Richard S.
St.Amand J. M.
The United States of America as represented by the Secretary of
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