Foreshortened dipole antenna with triangular radiators

Details Foreshortened dipole antenna with triangular radiators Foreshortened dipole antenna with triangular radiators

1985-12-02

1987-06-16

Wise, Robert E.

Communications: radio wave antennas

Antennas

Logarithmically periodic

343807, 343808, H01Q 1110

Patent

active

046739483

ABSTRACT:
A foreshortened log periodic antenna includes variously configured dipole elements which are arranged in four regions along the axis of the array. The first region includes a series of solid, triangular dipoles characterized by substantially constant base/height ratios. The second region similarly includes a series of solid, triangular dipoles. However, these elements are characterized by decreasing base/height ratios so as to afford a gradual transition into the third region, which includes a single linear dipole. The fourth region includes a series of solid or hollow rectangular elements connected by respective stems to the antenna feedline. In a manner set forth in U.S. Pat. No. 3,732,572, entitled "Log Periodic Antenna with Foreshortened Dipoles", the rectangular elements effect a reduction in the width of the array without a substantial affect on electrical performance.

REFERENCES:
patent: 3213457 (1965-10-01), Carr
patent: 3389396 (1986-06-01), Minerva et al.
patent: 3573839 (1971-04-01), Parker
patent: 3732572 (1973-05-01), Kuo
patent: 4286271 (1981-08-01), Barbano et al.
Kuo; "Size Reduced Log Periodic Dipole Array"; 1970 G-AP International Symposium; pp. 151-158; 1970.
Kuo; "Size Reduced Log Periodic Dipole Array Antenna"; Microwave Journal (GB); vol. 15, No. 12; pp. 27-33; 1972.

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