Invention Grant
- Patent Title: RF circuit and antenna combination for body wearable wireless communication systems
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Application No.: US14662209Application Date: 2015-03-18
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Publication No.: US09780453B1Publication Date: 2017-10-03
- Inventor: Laurent Desclos , Jeffrey Shamblin , Yu-Li Lin , Tzu-Ling Chiu
- Applicant: Ethertronics, Inc.
- Applicant Address: US CA San Diego
- Assignee: ETHERTRONICS, INC.
- Current Assignee: ETHERTRONICS, INC.
- Current Assignee Address: US CA San Diego
- Agency: Coastal Patent Law Group, P.C.
- Main IPC: H01Q1/27
- IPC: H01Q1/27 ; H01Q9/04 ; H01Q1/48 ; H01Q1/22

Abstract:
A method of configuring a small wireless communication system is described for body wearable applications where the radiated power from the antenna in the direction of the user is reduced. A method of coupling resonators, which are formed by planar conductors as well as linear conductors, is described where the resonators extend the electrical extent of the ground plane of a small circuit board resulting in improved antenna efficiency and bandwidth characteristics from an antenna coupled or connected to the ground plane. The resonators can be configured to modify the near-field distribution of the antenna radiation pattern of the antenna coupled to the small ground plane which will result in less power radiated in the volume behind the top surface of the ground plane the antenna is coupled to. A technique is also described wherein the antenna element is integrated onto the top surface of a packaged RFIC, with the RFIC containing the transceiver circuit. The technique is optimal for providing efficiency improvements for antennas on electrically small ground planes. A method of forming slots from planar conductors is described where the radiated field from the slot is combined with the radiated field from an antenna coupled to a small ground plane which can result in improved efficiency and/or modified polarization properties from the combination of antenna, resonator, and ground plane.
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