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US 10,374,326 B2Granted
Dual antenna systems with variable polarization
AssigneeSeescan, Inc.
InventorsStephanie M. Bench, Mark S. Olsson, Ray Merewether, Ryan B. Levin
Life of this patent
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Abstract
Antenna systems for receiving transmitted signals comprising at least a first tuned antenna disposed in a known relationship spatially with a second antenna, with the first tuned antenna electrically connected to the second antenna, are disclosed. The antenna system may be configured to allow the antennas to reliably discriminate between left-hand and right-hand polarized circular signals.
Claims18
An antenna system, comprising:
- A GPS antenna array for simultaneously receiving right and left had circularly polarized signals, including:
- a first set of one or more antenna elements configured to receive the right hand circularly polarized signal;
- a second set of one or more antenna element configured to receive the left hand circularly polarized signal;
- a first output coupled to the first set of elements to provide a first output signal responsive to the right hand circularly polarized signal;
- and
- a second output coupled to the second set of elements to provide a second output signal responsive to the left hand circularly polarized signal;
- wherein the first set of one or more antenna elements includes a left vane and a left ramp for receiving the left hand polarized GPS signal and the second set of one or more antenna elements includes a right vane and a right ramp for receiving the right hand polarized GPS signal.
4 more elements
A locating system, comprising:
- a magnetic field dipole sonde beacon for generating a magnetic field signal;
- a locator including an electronic locating receiver and processing element for magnetically sensing a buried utility beneath the ground and generating data corresponding to the sensed buried utility;
- a GPS antenna for providing a GPS output, the GPS antenna including a left hand polarized antenna structure including a left vane and left ramp for receiving a left hand polarized GPS signal, a right hand polarized antenna structure including a right vane and a right ramp for receiving a right hand polarized GPS signal, and a plurality of coaxial conductors;
- a GPS receiver module coupled to the GPS antenna output for providing data associated with a position of the locating receiver;
- and
- a non-transitory memory in the locator for storing the data associated with the position of the locating receiver in association with the data corresponding to the sensed buried utility.
3 more elements
Dependencies are inferred from the claim text.