Antenna device with two radiating elements having an adjustable

Details Antenna device with two radiating elements having an adjustable Antenna device with two radiating elements having an adjustable

1999-04-02

1999-12-21

Wong, Don

Communications: radio wave antennas

Antennas

Microstrip

343778, 343820, 343856, H01Q 916

Patent

active

060055227

ABSTRACT:
Antenna devices, including a pair and larger arrays of radiators, wherein each pair is to be connected to a first transmission line having a first characteristic impedance Z1. Each pair includes at least first and second radiating elements (1, 2) and first and second impedance transformers (3, 4) for the first and second radiating elements. One side of each transformer is connected to the respective element. The other sides are inter-connected by a second transmission line (8) to which their impedances are matched. The second transmission line has a resistive first impedance R1 equal to twice the first characteristic impedance Z1. The first transmission line is to be connected to the second transmission line at a selected one of many possible contact points (9). The selected contact point then determines a signal phase difference between said first and second radiating elements.

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Patent Abstract for JP-A-62-134241 filed May 27, 1987, Mitsubishi Electric Corp., Shintaro Nakahara.

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