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Brevets

Référencé par

Brevet citant Date de dépôt Date de délivrance Cessionnaire d'origine Titre
US42361259 juil. 197925 nov. 1980Societe Lignes Telegraphiques et TelephoniquesWide band high power very high or ultra high frequency circulators
US42583391 mars 197924 mars 1981Societe Lignes Telegraphiques et TelephoniquesLumped circuit circulator with adjustable band widening circuit
US427652217 déc. 197930 juin 1981General DynamicsCirculator in a stripline microwave transmission line circuit
US51535377 mars 19916 oct. 1992Tekelec AirtronicElectric power transmission system for hyperfrequencies having a gyromagnetic effect
US576869010 oct. 199516 juin 1998Kabushiki Kaisha ToshibaRadio communication device with improved antenna duplexing apparatus
US577402425 sept. 199630 juin 1998Murata Manufacturing Co, Ltd.Microwave non-reciprocal circuit element
US578673613 sept. 199628 juil. 1998Murata Manufacturing Co., Ltd.Non-reciprocal circuit element
US589834626 nov. 199627 avr. 1999Tokin Corporation
NEC Corporation
Dual-band nonreversible circuit device comprising two nonreversible circuit elements contained in a single housing to be operable in different frequency bands
US654908622 janv. 200215 avr. 2003Murata Manufacturing Co., Ltd.Nonreciprocal circuit device with a balanced port and communication device incorporating the same
US658368013 oct. 199924 juin 2003Murata Manufacturing Co., Ltd.Nonreciprocal circuit device and communications device
US66033692 mars 20015 août 2003Murata Manufacturing Co, Ltd.Nonreciprocal circuit device and communications apparatus incorporating the same
US664651722 janv. 200211 nov. 2003Murata Manufacturing Co., Ltd.Nonreciprocal circuit device and communication device having only two ports
US70024266 mars 200321 févr. 2006M/A-COM, Inc.Above resonance isolator/circulator and method of manufacture thereof