Antenna structures and methods for omni directional radiation patterns
US9324020B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 2012 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Jul 1, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/16227
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A device is provided for use with a radio frequency identification (RFID) chip that receives and modulates a radio frequency (RF) signal. A substrate of the device includes a first short dipole antenna structure that backscatters a received RF signal to produce a first radiation pattern having nulls. A set of connection pads couple the RF signal from the antenna to a frontend transmitter circuit of the RFID chip. A second antenna structure backscatters the received RF signal by electromagnetic coupling to the first antenna structure and produces a second radiation pattern that complements the nulls in the first radiation pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.