Wired microstrip linear array of dipoles

Details Wired microstrip linear array of dipoles Wired microstrip linear array of dipoles

1976-06-14

1978-01-31

Borchelt, Archie R.

Communications: radio wave antennas

Antennas

Microstrip

343846, H01Q 938

Patent

active

040718468

ABSTRACT:
A microstrip linear array of dipoles is disclosed wherein the dipoles are phased in alternate directions thereby enabling them to be spaced at approximately one-half wavelength intervals along or across a microstrip line instead of the typical one wavelength interval. An additional embodiment includes two linear arrays of oppositely polarized dipoles fed by tributary lines located at either side of a main microstrip line. Alternatively, first and second linear arrays of dipoles are disposed on opposite sides of a circuit board and the dipoles fed by microstrip line that evolves into a balanced two wire line. The ground plane on one side of the circuit board is made to gradually taper to a width equal to the microstrip line on the opposite side at which point the latter is called a two-wire line. Dipoles attached to each terminal of the two-wire line are offset in opposite directions in order to properly phase the currents on each dipole so that the currents flow in the same direction and the pair of dipoles radiates incident power with an omnidirectional pattern similar to a conventional dipole antenna.

REFERENCES:
patent: 3987455 (1976-10-01), Olyphant
patent: 3995277 (1976-11-01), Olyphant

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