EP 1730808 A4 20080903 - TRANSFORMER-FREE WAVEGUIDE CIRCULATOR
Title (en)
TRANSFORMER-FREE WAVEGUIDE CIRCULATOR
Title (de)
TRANSFORMATORLOSER WELLENLEITER-ZIRKULATOR
Title (fr)
CIRCULATEUR À GUIDE D'ONDES SANS TRANSFORMATEUR
Publication
Application
Priority
- US 2005009401 W 20050318
- US 55431604 P 20040318
Abstract (en)
[origin: WO2005114775A1] An improved waveguide circulator that eliminates the need for quarter-wave dielectric transformers or impedance steps in the interface waveguide for broadband operation is described. The circulator designs in the prior art all require impedance matching elements outside of the ferrite element in order to achieve acceptable performance. Through the use of this new invention, broadband circulator performance can be achieved without the addition of impedance matching elements in order to minimize the cost, size, mass, and loss of the circulator.
IPC 8 full level
H01P 1/39 (2006.01)
CPC (source: EP)
H01P 1/39 (2013.01)
Citation (search report)
- [X] JP S52152145 A 19771217 - MITSUBISHI ELECTRIC CORP
- [X] JP S51117853 A 19761016 - NIPPON ELECTRIC CO
- [X] US 2003107447 A1 20030612 - KROENING ADAM M [US]
- [X] US 4697158 A 19870929 - HOOVER JOHN C [US], et al
- [A] EP 0293210 A2 19881130 - VARIAN ASSOCIATES [US]
- [X] ZAAL: "Some Expermiental Results on the X-Band Junction Circulator", TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 13, no. 3, 1 May 1965 (1965-05-01), pages 382 - 383, XP002489112
- See references of WO 2005114775A1
Citation (examination)
- US 3935548 A 19760127 - ROSENBAUM FRED J, et al
- US 2004041647 A1 20040304 - KOMAI EIICHI [JP], et al
- TRIDELTA GMBH, HERMSDORF, GERMANY: "Definitionen und Erläuterungen", 31 January 2012 (2012-01-31), XP055018033, Retrieved from the Internet <URL:http://www.tridelta.de/viomatrix/imgs/download/definitionen_und_erl_uterungen.pdf> [retrieved on 20120131]
- MEINKE, GUNDLACH: "Taschenbuch der Hochfrequenztechnik", vol. 2, 1986, SPRINGER-VERLAG, ISBN: 3-540-15395-0, pages: L51
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005114775 A1 20051201; CA 2560555 A1 20051201; CA 2560555 C 20121218; EP 1730808 A1 20061213; EP 1730808 A4 20080903
DOCDB simple family (application)
US 2005009401 W 20050318; CA 2560555 A 20050318; EP 05726000 A 20050318