Patent · US Active

Antenna circuit and a method of optimisation thereof

US9287624B2 · kind B2 · utility

3Cited by

2References

19Claims

0Family size

Assignee

Hong Kong Applied Science and Technology Research Institute Company Limited · CN

Inventors

Tak Ki Wan · Kowloon, CN
Yan Liu · Mountain View, US
Song He · Sha Tin, CN
Dan Yang · Nanhu, CN
Chi Keung Angus Mak · Falmouth, GB

Key dates

Filing date	Oct 21, 2013
Grant date	Mar 15, 2016
Priority date	—
Expiry date	Jun 10, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH03H7/40
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

An antenna circuit is having an impedance circuit which can cancel signal leakage from the input port into the isolation port of a directional coupler. The antenna circuit further comprises a second impedance circuit for optimizing power transfer from the input port to the output port of the directional coupler. Furthermore, the antenna is tunable in order to maximize the reception strength of the antenna. The antenna circuit provides at once the possibility of tuning the antenna strength, optimizing the power transmission and reducing signal jamming by cancelling signal leakage. The antenna finds use as an effective and miniature RFID antenna.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.