Communications: radio wave antennas – Antennas – High frequency type loops
Patent
1998-09-18
2000-05-23
Wong, Don
Communications: radio wave antennas
Antennas
High frequency type loops
343860, 343866, H01Q 1112
Patent
active
060670525
ABSTRACT:
A loop antenna includes a dielectric substrate, and an antenna conductor forming a loop that extends over a surface of the substrate. A matching circuit near the conductor is dimensioned and arranged for electromagnetically coupling a radio frequency circuit with the antenna conductor. In one embodiment, the antenna conductor forms a closed loop on a surface of a first substrate layer, and the matching network includes a strip transmission line on a surface of a second substrate layer overlying the antenna conductor on the first substrate layer. The substrate layers form part of an interface unit that provides a wireless data link with a residential electric utility meter.
REFERENCES:
patent: 5072233 (1991-12-01), Zanzig
patent: 5422650 (1995-06-01), Hill
patent: 5659325 (1997-08-01), Belcher et al.
patent: 5678347 (1997-10-01), Terashima et al.
patent: 5719585 (1998-02-01), Tabata et al.
patent: 5847683 (1998-12-01), Wolfe et al.
R.C. Johnson and H. Jasik, Antenna Engineering Handbook, Chaps. 5 & 7, McGraw Hill (2d ed. 1984).
J.R. James and P.S. Hall, Handbook of Microstrip Antennas, Chap. 5 (Peregrinus 1989).
Rawles Michael S.
Tran Cuong
Ho Tan
Lucent Technologies - Inc.
Wong Don
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