Title:
DIGITAL PHASE SHIFTER
Document Type and Number:
WIPO Patent Application WO/2023/157401
Kind Code:
A1
Abstract:
This digital phase shifter comprises: a digital phase-shift circuit which comprises at least a signal line, a pair of inner lines that are disposed on both sides of the signal line and are spaced apart from each other by a predetermined distance, a pair of outer lines each provided on the outside of the inner lines, a first ground conductor connected to one end of each of the inner lines and the outer lines, a second ground conductor connected to the other end of each of the outer lines, and a pair of electronic switches each provided between the other end of each of the inner lines and the second ground conductor, the first ground conductor being composed of a multilayer conductive layer; and an output circuit that comprises an output signal line connected to the signal line and is configured to increase the output impedance over an input matching load connected to the input stage of the digital phase-shift circuit.
Inventors:
UEMICHI YUSUKE (JP)
Application Number:
PCT/JP2022/042237
Publication Date:
August 24, 2023
Filing Date:
November 14, 2022
Export Citation:
Assignee:
FUJIKURA LTD (JP)
International Classes:
H01P1/185; H01P5/02
Foreign References:
| US20190157754A1 | 2019-05-23 | |||
| US20190158068A1 | 2019-05-23 | |||
| JP7072118B1 | 2022-05-19 | |||
| JP2022024214A | 2022-02-09 | |||
| JP2022147145A | 2022-10-06 |
Other References:
TOUSI YAHYA; VALDES-GARCIA ALBERTO: "A Ka-band digitally-controlled phase shifter with sub-degree phase precision", 2016 IEEE RADIO FREQUENCY INTEGRATED CIRCUITS SYMPOSIUM (RFIC), IEEE, 22 May 2016 (2016-05-22), pages 356 - 359, XP032921498, DOI: 10.1109/RFIC.2016.7508326
"RFIC", 2016, IEEE, article "A Ka-band Digitally-Controlled Phase Shifter with Sub-degree Phase Precision"
"RFIC", 2016, IEEE, article "A Ka-band Digitally-Controlled Phase Shifter with Sub-degree Phase Precision"
Attorney, Agent or Firm:
OIKAWA Shu et al. (JP)
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