EP 0434860 A1 19910703 - Switched ring phase shifting circuit.
Title (en)
Switched ring phase shifting circuit.
Title (de)
Phasenverschiebungsschaltung mit geschaltetem Ring.
Title (fr)
Circuit déphaseur en anneau commuté.
Publication
Application
Priority
US 28796988 A 19881221
Abstract (en)
A phase shifting circuit is disclosed comprising a plurality of bidirectional transmission line segments (31, 35, 37, 39) serially connected to form a ring. Input and output terminals (13, 15) are connected to opposite ends of the first of the transmission line segments (31) to form a first signal path through the ring A second ring signal path, through the remainder of the serially connected transmission line segments (35, 37, 39), is selectively enabled to provide a predetermined phase shift at the output of the ring. By removing series semiconductor devices, the circuit permits higher power signals to be phase shifted over wide frequency ranges.
IPC 1-7
IPC 8 full level
H01P 1/185 (2006.01)
CPC (source: EP)
H01P 1/185 (2013.01)
Citation (search report)
- [X] US 4238745 A 19801209 - SCHWARZMANN ALFRED [US]
- [A] US 4001734 A 19770104 - BURNS RICHARD W
- [X] 1979 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM-DIGEST,30 april-2 may 1979,Orlando,US; IEEE,New York,US,1979; K.HIRAI et al.:"Practical design of C-band,MIC, PIN phase shifters" pages 229-231
- [A] IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES. vol. 22, no. 6, June 1974, NEW YORK US pages 658 - 674; J.F.WHITE: "Diode phase shifters for array antennas"
Designated contracting state (EPC)
DE ES GB IT NL
DOCDB simple family (publication)
DOCDB simple family (application)
EP 89123992 A 19891227; CA 2004857 A 19891207