DUAL ANTENNA SYSTEMS WITH VARIABLE POLARIZATION

• US 20150263434A1
• Filed: 03/14/2014
• Published: 09/17/2015
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: Seescan, Inc.
• Original Assignee: Seescan, Inc.
• Inventors: Bench, Stephanie M., Olsson, Mark S., Merewether, Ray, Levin, Ryan B.
• Granted Patent: US 10,490,908 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01Q 1/12 Supports; Mounting means
• CPC Class Codes: H01Q 1/273 Adaptation for carrying or wearing by persons or animals
• CPC Class Codes: H01Q 19/00 Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic combination of horns with slotted waveguide array H01Q13/0233
• CPC Class Codes: H01Q 21/24 Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001
• CPC Class Codes: H01Q 21/26 Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
• CPC Class Codes: H01Q 5/48 Combinations of two or more dipole type antennas
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 9/28 Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines waveguide horns or mouths H01Q13/00; slot antennas H01Q13/00
• CPC Class Codes: H01Q 9/44 with a plurality of divergent straight elements, e.g. V-dipole, X-antenna; with a plurality of elements having mutually inclined substantially straight portions combinations of two or more active elements H01Q21/00; turnstile antennas H01Q21/26

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.

Claims

1. An antenna system, comprising:

an antenna array including multiple conductive antenna elements comprising at least two antennas;

an array of orthogonal antenna conductive antenna elements disposed at at least two different heights above a ground plane;

a supporting element;

a standoff conductive element; and

a ground plane.

2. An antenna system, comprising:

a first set of or more antenna elements configured to receive a right hand circularly polarized signal;

a second set of one more antenna element configured to receive a 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.

3. The antenna system of claim 2, the first set of one or more antenna elements and the second set of one or more antenna elements are co-located within each other.

4. A locating system, comprising:

an electronic locating receiver;

a sonde-beacon;

a GPS antenna;

and a GPS receiver module.