Communications: radio wave antennas – Antennas – Logarithmically periodic
Patent
1997-02-07
1998-08-04
Le, Hoanganh T.
Communications: radio wave antennas
Antennas
Logarithmically periodic
H01Q 1110
Patent
active
057900825
ABSTRACT:
This antenna has several sets of conductors attached to a pair of feeder conductors. Each set is two coplanar triangles with a corner from each triangle at the center and with the two triangle sides opposite those corners being positioned parallel to each other. Those sets of conductors are in parallel planes and are aligned so that the triangle sides in each set that are parallel to each other are also parallel to the similar parallel sides in the other sets. The dimensions of those sets of conductors and the spaces between those sets are progressively and proportionally smaller from the rear to the front of the antenna. Two feeder conductors are attached to the central corners of those sets of conductors in such a way that one conductor connects to one side of both triangles and the other conductor connects to the other side of both triangles. In addition, those connections are reversed between the adjacent sets. Finally, the connection to the associated electronic equipment is usually at the front end of those two feeder conductors. Such an antenna produces more gain in a particular antenna length than the more traditional log-periodic dipole antenna.
REFERENCES:
patent: D213375 (1969-02-01), Habig
patent: 1790646 (1931-02-01), Alexanderson
patent: 2537191 (1951-01-01), Moore
patent: 2615005 (1952-10-01), White
patent: 2981951 (1961-04-01), Wickersham et al.
patent: 3108280 (1963-10-01), Mayes
patent: 3210767 (1965-10-01), Isbell
patent: 3213457 (1965-10-01), Carr
patent: 3268899 (1966-08-01), Walden
patent: 3434145 (1969-03-01), Wells
patent: 4152706 (1979-05-01), Barbono et al.
patent: 4630063 (1986-12-01), Kuo
patent: 5057850 (1991-10-01), Kuo
Grammer, George, "Technical Topics, The Quad Antenna," QST, Nov. 1948, pp. 40-42.
Sykes, B., "The Skeleton Slot Aerial System," The Short Wave Magazine, Jan. 1955, pp. 594-598.
Davey, W. W., "Try A Bi-Loop Antenna," 73 Magazine, Apr. 1979, p. 58.
Hawker, J. Patrick, "Technical Topics, Double-Delta Aerials for VHF and UHF," Radio Communications, Jun. 1969, pp. 396-397.
Tsukiji, Takahiko and Shigefumi Tou, "High-Gain, Broad-Band Yagi-Uda Array Composed of Twin-Delta Loops," Antennas and Propagation, Part I: Antennas, I.E.E.E. Conference Publication No. 195, 1981, pp. 438-441.
Tsukiju, Takehiko et al, "Twin Delta Loop Antenna and Its Application to Antenna with Plane Reflector," Electronics and Communications in Japan, part 1, Vol. 68, No. 11, 1985, pp. 96-104.
Tsukiju, Takehiko and Yasunori Kumon, "The Crossed Twin-Delta-Loop-Antennas with Different Peripheral Lengths," Proceedings of the 1985 International Symposium on Antennas and Propagation, Japan, pp. 481-484.
Belrose, John, "Technical Correspondence, A Half Twin-Delta Loop Array," QST, Apr. 1983, pp. 39-40.
Orr, William I., "Loop Configuration," Radio Handbook, 23rd ed. (Indianapolis: Howard W. Sams & Co., 1987), pp. 22-11/12.
Carrel, Robert L., Analysis and Design of The Log-Periodic Dipole Antenna, University of Illinois, Antenna Laboratory Technical Report 52.
Sykes, B., "The Skeleton Slot Antenna," CQ, Aug. 1960, pp. 52-53, 122.
Habig, Harry R, "The HRH Delta-Loop Beam," QST, Jan. 1969, pp. 26-29.
Le Hoanganh T.
Phan Tho
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