The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 13, 2018
Filed:
Nov. 17, 2017
Huawei Technologies Co., Ltd., Shenzhen, CN;
Huizhen Qian, Chengdu, CN;
Xun Luo, Chengdu, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
A digital phase shifter includes a logic control circuit, at least four current digital-to-analog converters, at least four amplifiers, and a vector summation circuit. The logic control circuit generates four N-bit digital phase shift control signals according to an (N+2)-bit digital control source signal, and respectively inputs the four N-bit digital phase shift control signals to the four current digital-to-analog converters. The four current digital-to-analog converters are respectively connected in series with the four amplifiers, to implement selection and amplification on four orthogonal input signals, and the vector summation circuit synthesizes amplified signals that are output by the four amplifiers, to obtain a signal having a 360 degree (°) phase shift range.