Invention Application
- Patent Title: Adaptive antenna for use in wireless communication systems
- Patent Title (中): 用于无线通信系统的自适应天线
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Application No.: US09846693Application Date: 2001-05-01
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Publication No.: US20020036595A1Publication Date: 2002-03-28
- Inventor: Bing Chiang , James A. Proctor JR. , Griffin K. Gothard , Kenneth M. Gainey , Joe T. Richeson
- Applicant: Tantivy Communications, Inc.
- Applicant Address: US FL Melbourne
- Assignee: Tantivy Communications, Inc.
- Current Assignee: Tantivy Communications, Inc.
- Current Assignee Address: US FL Melbourne
- Main IPC: H01Q003/24
- IPC: H01Q003/24 ; H01Q021/00

Abstract:
A directive antenna includes plural antenna elements in an antenna assemblage. A feed network connected to the antenna elements includes at least one switch to select a state of one of the antenna elements to be in an active state in response to a control signal. The other antenna elements are in a passive state, electrically coupled to an impedance to be in a reflective mode. The antenna elements in the passive state are electromagnetically coupled to the active antenna element, allowing the antenna assemblage to directionally transmit and receive signals. The directive antenna may further include an assisting switch associated with each antenna element to assist coupling the antenna elements, while in the passive state, to the respective impedances. The antenna assemblage may be circular for a 360null discrete scan in N directions, where N is the number of antenna elements. The directive antenna is suitable for use in a high data rate network having greater than 50 kbits per second data transfer rates, where the high data rate network may use CDMA2000, 1 eV-DO, 1Extreme, or other such protocol.
Public/Granted literature
- US06515635B2 Adaptive antenna for use in wireless communication systems Public/Granted day:2003-02-04
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