Tunable slot antenna with capacitively coupled slot island conductor for precise impedance adjustment
US6034644A · kind A · utility
29Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 1998 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | May 29, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q13/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A coaxial resonant slot antenna includes a flat rectangular conductive box having its top plate with a slot being defined therein, and a strip conductor disposed inside the box and electrically insulated from the box while high frequency or RF power is fed to the strip. An island conductor is provided in the slot for defining a capacitance between itself and the frame. This capacitance is rendered variable in value by use of a variable circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.