Communications: radio wave antennas – Antennas – Spiral or helical type
Patent
1996-04-23
1997-07-15
Hajec, Donald T.
Communications: radio wave antennas
Antennas
Spiral or helical type
343873, 343702, H01Q 136, H01Q 140
Patent
active
056487886
ABSTRACT:
An antenna for a wireless communicating device can be set at a precise frequency, in the as formed state. A coil antenna is precisely held in a mold, while an appropriate plastic is molded therearound, with no distortion of the coil, to fix a precise shape for the coil. The recovered, plastic-encased coil requires little or no follow-up treatment before it can be used in a wireless communication device as an antenna.
REFERENCES:
patent: 3737910 (1973-06-01), Francis et al.
patent: 3745498 (1973-07-01), Hagood
patent: 4058811 (1977-11-01), Gauss et al.
patent: 4063206 (1977-12-01), Walker, III
patent: 4725395 (1988-02-01), Gasparaitis et al.
patent: 5341149 (1994-08-01), Valimaa et al.
patent: 5504494 (1996-04-01), Chatzipetros et al.
D & M Plastics Corporation
Hajec Donald T.
Ho Tan
P. Perrone, Jr. Mathew R.
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