Communications: radio wave antennas – Antennas – High frequency type loops
Patent
1994-08-31
1997-09-30
Hajec, Donald T.
Communications: radio wave antennas
Antennas
High frequency type loops
343702, 343748, 343866, H01Q 1112
Patent
active
056730543
ABSTRACT:
A loop antenna device of the invention, when incorporated in a transceiver, stably a high level of sensitivity without being substantially influenced by the body, regardless of the posture or direction of the transceiver when the transceiver is mounted on or carried by the human body. The loop antenna device also provides, when the transceiver is not carried on a human body, a highly stable sensitivity characteristic even in such a condition that the polarization plane changes over time under the influence of multi-path strain or fading. The antenna circuit which provides these advantageous effects does not require any additional element for matching and contributes to reduction in the size of a transceiver.
REFERENCES:
patent: 2629051 (1953-02-01), Lindenblad
patent: 3918062 (1975-11-01), Haruki et al.
patent: 4419770 (1983-12-01), Yagi et al.
patent: 4862181 (1989-08-01), Ponce De Leon et al.
patent: 4862516 (1989-08-01), Macnak et al.
patent: 4884252 (1989-11-01), Teodoridis et al.
patent: 4973944 (1990-11-01), Maletta
patent: 5113196 (1992-05-01), Ponde de Leon et al.
patent: 5134418 (1992-07-01), Gomez et al.
patent: 5182568 (1993-01-01), Stamps, Jr. et al.
patent: 5227804 (1993-07-01), Oda
patent: 5300938 (1994-04-01), Maroun et al.
patent: 5408699 (1995-04-01), Yamashita et al.
patent: 5469178 (1995-11-01), Nguyen et al.
Webster's II New Riverside University Dictionary, p. 827 1988.
Hama et al, "A Study on Small Slot Antenna for Wrist Watch Type Portable Radio Equipment," Technical Report IEICE, No Date, pp. 1-13.
Fujimoto et al., "Small Antennas"; Research Studies Press, Ltd.; John Wiley & Sons, Inc., 1987.
Ito et al.; "A Small-Loop Antenna for Pocket-Size VHF Radio Equipment", National Technical Report; vol. 19, No. 2, Apr. 1973; pp. 145-154.
Hajec Donald T.
Phan Tho
Seiko Epson Corporation
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