Switchable antennas for wireless applications
AssigneeCommsky Technologies, Inc.
InventorsPo-shin Cheng, Xin Li, Daniel Wang, Jun Shen, George Zhao
Life of this patent
Estimating the term…
Abstract
Techniques of designing an antenna array with antenna units controlled electronically are described. Through controlling the combination of the reflectors in each of the antenna units, a desired antenna pattern is formed, adapting to the environment, and providing reliable and efficient links between two transceivers. According to one aspect of the present invention, a switch (e.g., a diode) is used to couple two reflectors. The diode is controlled to be on or off so that the reflectors are conductively integrated or separated.
Claims14
An antenna system comprises:
- a substrate;
- at least two antenna units each of the antenna units including two antennas, each of the two antennas including one radiator and one reflector, wherein two reflectors in each of the antenna units are coupled via a switch;
- and
- a switch control unit provided to control the switch electronically in each of the two antenna units, wherein the switch is turned on or off to connect or disconnect the two reflectors in each of the two antenna units so as to change a radiation pattern of the antenna system;
- wherein each of the two reflectors is bent on one end and extended towards a gap between the two antenna units to isolate respective radiations from the two antenna units.
An antenna system comprises:
- a printed circuit board (PCB);
- four diodes;
- four antenna units, equally spaced from a center and disposed on four sides of the center, each of the antenna units including two antennas including one radiator and one reflector, wherein two reflectors in each of the antenna units are coupled via one of the four diodes, the antennas in each of the antenna units are structured with copper straps on the PCB,
- wherein each of the diodes is electrically controlled to be one or off to connect or disconnect the two reflectors so as to change a radiation pattern of the antenna system, and
- wherein the antenna units are equally driven by a power source disposed at the center.
Dependencies are inferred from the claim text.