Microwave transponder
US7505789B2 · kind B2 · utility
0Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2005 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Sep 13, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/2208
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A microwave transponder. The microwave transponder includes a conductive plate including an antenna, and a semiconductor chip disposed within a terminal gap located in a vicinity of a center of the conductive plate. A window of a predetermined shape is formed to extend from the terminal gap toward a side of the conductive plate. The perfect impedance matching is fulfilled even when the transponder is bent. Since the return loss of the electromagnetic power is reduced at least in a quarter through the impedance matching, the energy transferred to the transponder is maximized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.