Communications: radio wave antennas – Antennas – Spiral or helical type
Patent
1998-09-25
2000-11-21
Ho, Tan
Communications: radio wave antennas
Antennas
Spiral or helical type
343860, H01Q 136
Patent
active
061509949
ABSTRACT:
A quadrifilar helix antenna of the present invention is used with a wireless device to transmit and receive signals. The antenna includes a plurality of helical antenna elements and an impedance transformer electrically connected to the antenna elements and connectable to the wireless device. The impedance transformer may be comprised of either a planar transmission line 1/4 wave impedance transformer or a pi-network impedance transformer. The antenna may also be comprised of dual band quadrifilar helix antenna for transmitting or receiving two different frequency bands.
REFERENCES:
patent: 4799066 (1989-01-01), Deacon
patent: 5255005 (1993-10-01), Terret et al.
patent: 5346300 (1994-09-01), Yamamoto et al.
patent: 5349365 (1994-09-01), Ow et al.
patent: 5541617 (1996-07-01), Connolly et al.
patent: 5635945 (1997-06-01), McConnell et al.
Sullivan Jon L.
Winter James Blake
Centurion Intl., Inc.
Ho Tan
Thomte Dennis L.
LandOfFree
Antenna for personal mobile communications or locating equipment does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Antenna for personal mobile communications or locating equipment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antenna for personal mobile communications or locating equipment will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1262129