Title:
ULTRA-WIDEBAND TWO-PHASE PHASE SHIFTER
Document Type and Number:
WIPO Patent Application WO/2021/129646
Kind Code:
A1
Abstract:
An ultra-wideband two-phase phase shifter, comprising an active balun, first to third differential amplifiers, a switch matrix, an RC orthogonal network and a single-pole double-throw switch, wherein the active balun receives a single-ended signal and converts the single-ended signal into double-ended signals, which are respectively connected to two input ends of the first differential amplifier; the first differential amplifier carries out wave shaping and gain compensation on two received paths of signals, and selects different branches by means of the switch matrix to realize a 180-degree phase shift; the double-ended signals pass through the switch matrix and generate an orthogonal signal by means of the cascading of the RC orthogonal network, and a rear stage of the RC orthogonal network is respectively connected to the second and third differential amplifiers in a cascading manner; and the single-pole double-throw switch selects different branches of the second and third differential amplifiers to generate a 90-degree phase shift stepping amount, thereby realizing a 90-degree phase shift amount, a 180-degree phase shift amount and a 270-degree phase shift amount. The ultra-wideband two-phase phase shifter has the advantages of an ultra wideband, a high phase shift precision, a good amplitude balance, a simple control mode and a high integration level.
Inventors:
LIU YAO (CN)
PAN XIAOFENG (CN)
PAN XIAOFENG (CN)
Application Number:
PCT/CN2020/138542
Publication Date:
July 01, 2021
Filing Date:
December 23, 2020
Export Citation:
Assignee:
CETC GUOJI SOUTHERN GROUP CO LTD (CN)
International Classes:
H03H11/16
Foreign References:
| CN111082765A | 2020-04-28 | |||
| CN203596804U | 2014-05-14 | |||
| CN107124154A | 2017-09-01 | |||
| CN107863949A | 2018-03-30 | |||
| CN105552485A | 2016-05-04 | |||
| US4638190A | 1987-01-20 |
Other References:
See also references of EP 4080765A4
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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