Endfire-type phased array antenna
US4122447A · kind A · utility
11Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1976 |
| Grant date | Oct 24, 1978 |
| Priority date | — |
| Expiry date | Oct 26, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An endfire-type phased array antenna comprises n antenna elements (n.gtoreq.3). The difference of current flowing through the antenna elements is controlled to one which is pre-determined by adjusting each length of the feeders and by coupling the phase inverting circuits to alternate antenna elements. The current amplitude ratio thereof is also controlled to a pre-determined value by using a mixing or distributing circuit. Thus an antenna having a high directivity in front and no radiation in other directions is provided which can be effectively used for preventing multi-path interference in TV or FM.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.