Dual-band GPS antenna with horizontal polarization
| DWPI Title: Antenna array for dual-band global positioning system (GPS) reception, has insulating plate that is situated between dipole antennas and feed network such that electromagnetic (EM) energy from each arm couples to portion of dipole antenna |
| Abstract: An antenna array is described herein that is suitable for dual-band GPS reception. The antenna array includes a plurality of dipole antennas arranged in a circular pattern. The antenna array further includes a feed network, separated from the dipole antennas by an insulating plate, and that passes electrical signals output by the dipole antennas to a feed line. The feed network comprises a central plate in contact with the feed line, and a plurality of arms aligned with the dipoles and extending from the center plate toward the outer edges of the circular pattern. The arms cross over slots in each of the dipole antennas. Electromagnetic waves that impinge on the dipoles induce signals that travel down the slots in the dipoles and couple to the arms of the feed network where the arms cross over the slots. The signals then travel along the feed network to the feed line. |
| Use: Antenna array of electronic device (claimed) for dual-band global positioning system (GPS) reception. |
| Advantage: The arrangement and construction of the antenna array is found to provide the capability to reliably receive signals in the L1 and L2 GPS bands while mitigating electromagnetic (EM) coupling from nearby emission sources. The portions of aluminum that make up the feed network and the dipoles are relatively thick in order to provide structural stability and to allow the array to withstand environments of high intensity shock and vibration. The shorting pin also improves thermal characteristics of the array by more evenly spreading heat across components of the array. |
| Novelty: The antenna array (100) has several dipole antennas (102-108) that are arranged in a circular pattern. A feed network (110) comprises a central plate (116) connected to a feed line and arms extending from the central plate. The arms are arranged such that electromagnetic (EM) energy from each arm couples to a portion of a respective dipole antenna in the dipole antennas. An insulating plate (112) is situated between the dipole antennas and the feed network. The insulating plate comprises PTFE. |
| Filed: 8/23/2017 |
| Application Number: US15684560A |
| Tech ID: SD 14293.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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