Low profile circular array antenna and microstrip elements therefor
US4414550A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1981 |
| Grant date | Nov 8, 1983 |
| Priority date | — |
| Expiry date | Aug 4, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna element is comprised of two rectangular microstrip patch dipoles spaced by dielectric a predetermined distance above a ground plane conductor. One edge of each dipole is electrically shunted to the ground plane conductor. The dipole feedpoints are separated by a quarter wavelength of the antenna resonant frequency. An isolated power splitter and phase shifter connects an antenna element port with the dipole feedpoints so that the signal at one feedpoint lags the signal at the other feedpoint by 90.degree.. The antenna element will end fire through the dipoles in the direction of the lagging signal feedpoint. A low profile circular array antenna is comprised of eight such antenna elements arranged on the ground plane conductor equally spaced with their phase centers on a common phase center circle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.