Communications: radio wave antennas – Antennas – With grounding structure
Patent
1999-02-26
2000-08-08
Wong, Don
Communications: radio wave antennas
Antennas
With grounding structure
343700MS, 343845, H01Q 148
Patent
active
061008559
ABSTRACT:
An antenna structure including a ground plane that provides a good front to back ratio while maintaing a small size and which can mechanically be made to fit into tight areas. The antenna structure may be a GPS patch antenna, or any other antenna adapted to receive broadcast signals. The ground plane is made from radar absorbing material (RAM) in electrical contract with conductive radials. The RAM inherently acts to suppress surface currents on the ground plane, which in turn reduces back signals. Although RAM has some resistance, it is low enough such that the electrical effect of the radials is extended through the RAM, essentially simulating a "solid" conductive disk. Both the RAM and radials may be made from light and flexible material, and consequently may be adapted for use in a variety of applications.
REFERENCES:
patent: 3534378 (1970-10-01), Smith
patent: 4658266 (1987-04-01), Doty
patent: 5495261 (1996-02-01), Baker et al.
patent: 5592174 (1997-01-01), Nelson
patent: 5646634 (1997-07-01), Bokhari et al.
patent: 5654717 (1997-08-01), Nichols et al.
patent: 5694136 (1997-12-01), Westfall
patent: 5706015 (1998-01-01), Chen et al.
patent: 5982335 (1999-11-01), Faraone et al.
patent: 5986615 (1999-11-01), Westfall et al.
patent: 6002367 (1999-12-01), Engblom et al.
Braasch and Snyder, "Running interference: testing a suppression unit," GPS World, 50-54, 1998.
Lachapelle et al., "Marine DGPS using code and carrier in a multipath environment,"???
Tranquilla et al., "Analysis on a choke ring groundplane for multipath control in global positioning sytem (GPS) applications," IEEE Transactions on Antennae and Propogation, 42:905-911, 1994.
DeJesus Armando
Vinson James K.
Chen Shih-Chao
Marconi Aerospace Defence Systems, Inc.
Wong Don
LandOfFree
Ground plane for GPS patch antenna does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ground plane for GPS patch antenna, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ground plane for GPS patch antenna will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1154667