Patent ID: 9130280
Filing Date: 2015-09-08
Classification: H01Q

Abstract:
1. A phased-array smart antenna for transmitting an electronic wave signal having a wavelength, comprising: a first antenna; a second antenna; a third antenna; a first control circuit, coupled to the first antenna at a first node; a second control circuit, coupled to the second antenna at a second node; a third control circuit, coupled to the third antenna at a third node; and a processor, respectively controlling a first voltage provided to the first node, a second voltage provided to the second node, and a third voltage provided to the third node, wherein the first antenna, the second antenna, and the third antenna form a triangle and the first antenna, the second antenna, and the third antenna are respectively located at three vertices of the triangle, and the first antenna, the second antenna, and the third antenna are activated at the same time for transmitting the electronic wave signal; and wherein a height of the triangle is where λ is the wavelength of the electronic wave signal and i is a non-negative integer, and wherein the processor adjusts a first phase of the electronic wave signal at a feeding point of the first antenna, a second phase of the electronic wave signal at a feeding point of the second antenna and a third phase of the electronic wave signal at a feeding point of the third antenna by controlling levels of the first voltage, the second voltage and the third voltage, respectively, such that a difference between the first phase and the second phase and a difference between the first phase and the third phase are 180 degrees.