公开(公告)号：US20180175514A1

公开(公告)日：2018-06-21

申请号：US15386529

申请日：2016-12-21

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： HSI-TSENG CHOU ,  HAO-JU HUANG ,  CHIEN-TE YU

IPC: H01Q21/22 ,  H01Q3/26

CPC classification number: H01Q21/22 ,  H01Q3/26

Abstract: An active phased array antenna system with hierarchical modularized architecture is introduced, which includes an array antenna and a beamforming circuit. The array antenna includes a plurality of antenna units, number of which is N and which are arranged in array form. The beamforming circuit is for receiving a plurality of input signals and a plurality of phase control signals, and includes a hierarchical circuit structure based on phase shifters, for outputting a plurality of output signals based on the input signals according to phase values corresponding to the phase control signals and combinations of the phase values; the output signals are respectively coupled to the antenna units so as to generate a radiation pattern, wherein number of the phase control signals is T, T

公开(公告)号：US20170201020A1

公开(公告)日：2017-07-13

申请号：US14990931

申请日：2016-01-08

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： HSI-TSENG CHOU ,  DUN-YUAN CHENG ,  KUNG-YU LU ,  NAN-WEI CHEN ,  MING-WHAY LAI

IPC: H01Q3/34

Abstract: A method for correcting antenna phases includes a beam angle calculating step, beam angle adjusting step, antenna emission measuring step and beam angle correcting step. The method involves comparing a difference between the ideal antenna phase value and the measured beam angle value, determining according to the difference that the beam direction of the antenna needs to be corrected, and adding the difference to a current ideal antenna phase value in the algorithm to calculate another ideal antenna phase value for being sent to the phase control circuit and used in executing the beam angle adjusting step in a next instance of measurement process until the beam angle correcting step finds the difference which requires no correction of the beam direction of the antenna. Therefore, temperature-dependent errors do not occur to beam directions, thereby enhancing the communication efficiency of an antenna system.