Method and apparatus for optimally tuning a circularly polarized patch antenna after installation
US6680703B1 · kind B1 · utility
8Cited by
86References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2002 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Feb 14, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0442
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention provides methods and apparatuses for tuning a circularly polarized patch antenna to compensate for manufacturing tolerance variation, and to compensate for mistuning of the antenna due to the implementation of the product in which the antenna is used. Varactors are coupled to the metal patch portion of the antenna, and a dc voltage is applied to tune the antenna capacitance. The varactors can receive different voltages if desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.