US Patent No. 10,601,132

ACTIVE PHASE SWITCHABLE ARRAY


Patent No. 10,601,132
Issue Date March 24, 2020
Title Active Phase Switchable Array
Inventorship Fu-Kang Wang, Kaohsiung (TW)
Tzyy-Sheng Horng, Kaohsiung (TW)
Lih-Tynh Hwang, Kaohsiung (TW)
Chung-Yi Hsu, Kaohsiung (TW)
Cho-Ying Chuang, Kaohsiung (TW)
Assignee NATIONAL SUN YAT-SEN UNIVERSITY, Kaohsiung (TW)

Claim of US Patent No. 10,601,132

1. A active phase switchable array comprising:a plurality of antenna elements each including an antenna, a power coupling network and an injection-locked oscillator (ILO), wherein the power coupling network is coupled to the antenna and the ILO, an output signal output from the ILO is configured to transmit to the antenna through the power coupling network, and the antenna is configured to radiate the output signal to a subject, wherein a reflected signal reflected from the subject is received by the antenna and transmitted to the ILO through the power coupling network to allow the ILO to operate in a self-injection-locked state, and wherein the power coupling network of one of the antenna elements is coupled to the power coupling network of another of the antenna elements, and the output signal from the ILO of the another of the antenna elements is transmitted to the ILO of the antenna element through the power coupling networks to allow the ILOs to operate in a mutual-injection-locked state; and
a bias circuit configured to output a plurality of modulation voltages, wherein the modulation voltages are respectively transmitted to the ILO of each of the antenna elements to control a free-running frequency of each of the ILOs, and a plurality of wireless signals radiated from the antennas are configured to form a direction adjustable beam.