Communications: radio wave antennas – Antennas – Plural diverse-type antennas using same active element
Patent
1992-10-02
1995-03-28
Wimer, Michael C.
Communications: radio wave antennas
Antennas
Plural diverse-type antennas using same active element
343700MS, 343752, 343770, H01Q 138, H01Q 936, H01Q 1310, H01Q 2100
Patent
active
054021367
ABSTRACT:
A conductive layer is formed on one surface of an insulating substrate. Notches are formed in the conductive layer to be axially symmetric at equal angular intervals of 120.degree.. A feeding line of a notch antenna is formed on the other surface of the substrate. The feeding line has a C-shape and wide portions for adjusting the phases of excitation of the notches, and receives power at its one point. A ground plate is arranged to be parallel to the substrate. A feeding rod is connected to the conductive layer. The conductive layer and the ground plate are short-circuited by impedance matching pins. The matching pins are integrally formed with the ground plate. The notches and the feeding line constitute an notch antenna, and the feeding rod, the ground plate, the conductive layer, and the matching pins constitute a capacity loaded monopole antenna. To resonate these antennae at a plurality of resonant points, slits are formed in the conductive layer to be axially symmetric at equal angular intervals of 120.degree., and branch lines are connected to feeding lines. The slits resonate the capacity loaded monopole antenna at a plurality of frequencies. The branch lines resonate the notches at a plurality of frequencies. When the number of branch lines, the number of slits, and the like are adjusted, a diversity antenna covering a plurality of bands can be obtained.
REFERENCES:
patent: 3665480 (1972-05-01), Fassett
patent: 4242685 (1980-12-01), Sanford
"A Flat Diversity Antenna by Disk Loaded Monopole and Notch Array" by H. Arai et al; IEEE Antennas & Propagation Society International Symposium; 1992 Digest, vol. 2, pp. 1085-1089.
"A Flat Diversity Antenna at 900 MHz for Mobile Telephone" by H. Arai et al, Vehicular Technology Society 24nd VTS, vol. 1, pp. 29-32, May 10-13, 1992.
"Flat Energy Density Antenna" by H. Arai et al; Antennas and Propagation Society Symposium, 1991 Digest, vol. 2, pp. 940 to 943.
"Flat Energy Density Antenna" by H. Arai et al, 1990 International Symposiium Digest Antenna and Propagation, vol. II, pp. 823-826.
"Vehicular Diversity Flat Antenna at 900 MHz", by H. Arai et al, IEICE Transactions, vol. E74, No. 10, Oct. 1991, pp. 3222-3226.
"A Flat Energy Density Antenna System for Mobile Telephone" by H. Arai et al, IEEE Transactions, Vehicular Technology vol. 40, No. 2, May 1991, pp. 483-486.
1992 International Symposium on Antennas and Propagation, by S. Hosono et al.
"Feed Circuit of Planar Diversity Antenna" by H. Arai et al, 1989 Autumn National Conference of the Institute of Electronics, 1989, vol. 2, p. 54.
"Matching Method and Band Width of Plate Type Antenna", by H. Arai et al, 1990 Spring National Conference of Institute of Electronics, 1990, vol. 2, p. 25.
"Indoor Field Measurements of Planar Energy-density Antenna System" by H. Iwashita et al, 1990 Spring National Conference of Institute of Electronics, 1990, vol. 2, pp. 569-570.
"Multi Function Feed Circuit for Diversity Antenna" by H. Iwashita et al, 1990 Autumn National Conference of Institute of Electronics, 1990, vol. 2, p. 44.
"Propagation Measurement of Flat Energy Density Antenna" by H. Iwashita et al, 1991 Spring National Conference of the Institute of Electronics, 1991, vol. 2, p. 37.
"Feed Circuit and Radiation of Flat Energy Diversity Antenna" by H. Arai et al, 1991 Spring National Conference of Institute of Electronics, 1991, vol. 2, p. 97.
"Flat Two Branches Diversity Antenna" by S. Hosono et al, 1992 Spring National Conference of the Institute of Electronics, 1992, vol. 2, p. 91.
"The Diversity Gain Depending on Feed Circuits of Notch Antenna Array" by S. Hosono, 1992 Autumn National Conference of Institute of Electronics.
"A Planar Ring Patch and Notch Antenna System for Energy-Density Reception of Mobile Telephony" by H. Arai et al, Journal of Institute of Electronics, May 18, 1989, pp. 29-32.
"Radiation Pattern and Feed Circuit of Planar Diversity Antenna" by H. Iwashita et al, Journal of Institute of Electronics, Oct. 27, 1989, pp. 23-28.
"Experimental Remarks of Flat Antenna Configuration, Bandwidth Electrical Volume and Gain" by K. Endo et al, Journal of Institute of Electronics, 1990, pp. 9-14.
"Multi Function Flat Diversity Antenna" by H. Arai et al, Journal of Institute of Electronics, 1990, pp. 21-24.
"Propagation Measurement at Yokohama by Flat Energy-density Antenna" by H. Arai et al, Journal of the Institute of Electronics, 1991, pp. 65-72.
"An Electrically Small, Flat Diversity Antenna" by S. Hosono, Journal of the Institute of Electronics, Nov. 21, 1991, pp. 37 to 42.
Arai Hiroyuki
Goto Naohisa
Mori Mitsuo
Seshimo Kiyoshi
Uchida Motoaki
Arai Hiroyuki
Goto Naohisa
NHK Spring Co. Ltd.
Wimer Michael C.
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