Communications: radio wave antennas – Antennas – Spiral or helical type
Patent
1996-04-18
1997-04-22
Hajec, Donald T.
Communications: radio wave antennas
Antennas
Spiral or helical type
343846, H01Q 136
Patent
active
056232713
ABSTRACT:
There is disclosed a planar antenna for very low frequencies. The antenna has a high impedance and can be matched to 50 ohm or higher impedance stages. The antenna may be used for applications which require a short range such as a wireless peripheral. The antenna operates only in its near-field and does not require a complex lossy impedance matching network, since the input impedance is large.
REFERENCES:
patent: 4032921 (1977-06-01), Sikina, Jr. et al.
patent: 4630064 (1986-12-01), Andrews et al.
patent: 5170175 (1992-12-01), Kabus et al.
patent: 5313216 (1994-05-01), Wang et al.
Hajec Donald T.
Ho Tan
IBM Corporation
Tassinari, Jr. Robert P.
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