| 
            
              CH552304A
              (en)
            
            *
            
           | 
          1973-07-19 | 
          1974-07-31 | 
          Patelhold Patentverwertung | 
          
  FILTER FOR ELECTROMAGNETIC WAVES.
 
      | 
        
        
          | 
            
              JPS5127757A
              (en)
            
            *
            
           | 
          1974-09-02 | 
          1976-03-08 | 
          Hitachi Ltd | 
           | 
        
        
          | 
            
              FR2346897A1
              (en)
            
            *
            
           | 
          1975-01-22 | 
          1977-10-28 | 
          Thomson Csf | 
          
  HYPERFREQUENCY MILLIMETRIC CIRCUIT
 
      | 
        
        
          | 
            
              US4028643A
              (en)
            
            *
            
           | 
          1976-05-12 | 
          1977-06-07 | 
          University Of Illinois Foundation | 
          Waveguide having strip dielectric structure 
        | 
        
        
          | 
            
              JPS52153359A
              (en)
            
            *
            
           | 
          1976-06-14 | 
          1977-12-20 | 
          Murata Manufacturing Co | 
          Dielectric resonator 
        | 
        
        
          | 
            
              JPS6047764B2
              (en)
            
            *
            
           | 
          1977-01-21 | 
          1985-10-23 | 
          ソニー株式会社 | 
          
        Integrated circuit microwave oscillator
       
      | 
        
        
          | 
            
              US4079341A
              (en)
            
            *
            
           | 
          1977-03-01 | 
          1978-03-14 | 
          Bell Telephone Laboratories, Incorporated | 
          Microwave oscillator having feedback coupled through a dielectric resonator 
        | 
        
        
          | 
            
              JPS5423448A
              (en)
            
            *
            
           | 
          1977-07-25 | 
          1979-02-22 | 
          Toshiba Corp | 
          Microwave filter 
        | 
        
        
          | 
            
              US4124830A
              (en)
            
            *
            
           | 
          1977-09-27 | 
          1978-11-07 | 
          Bell Telephone Laboratories, Incorporated | 
          Waveguide filter employing dielectric resonators 
        | 
        
        
          | 
            
              US4184133A
              (en)
            
            *
            
           | 
          1977-11-28 | 
          1980-01-15 | 
          Rockwell International Corporation | 
          Assembly of microwave integrated circuits having a structurally continuous ground plane 
        | 
        
        
          | 
            
              FR2431773A1
              (en)
            
            *
            
           | 
          1978-07-21 | 
          1980-02-15 | 
          Thomson Csf | 
          
  MICROWAVE FILTER WITH DIELECTRIC RESONATORS AND TELECOMMUNICATIONS EQUIPMENT PROVIDED WITH SUCH A FILTER
 
        | 
        
        
          | 
            
              JPS5553907A
              (en)
            
            *
            
           | 
          1978-10-17 | 
          1980-04-19 | 
          Hitachi Ltd | 
          Microwave oscillator 
        | 
        
        
          | 
            
              US4241322A
              (en)
            
            *
            
           | 
          1979-09-24 | 
          1980-12-23 | 
          Bell Telephone Laboratories, Incorporated | 
          Compact microwave filter with dielectric resonator 
        | 
        
        
          | 
            
              JPS5823408U
              (en)
            
            *
            
           | 
          1981-08-07 | 
          1983-02-14 | 
          アルプス電気株式会社 | 
          
        microwave oscillator
       
      | 
        
        
          | 
            
              FR2511548A1
              (en)
            
            *
            
           | 
          1981-08-14 | 
          1983-02-18 | 
          Thomson Csf | 
          
  COAXIAL STRUCTURE TAPE FILTER
 
        | 
        
        
          | 
            
              US4477785A
              (en)
            
            *
            
           | 
          1981-12-02 | 
          1984-10-16 | 
          Communications Satellite Corporation | 
          Generalized dielectric resonator filter 
        | 
        
        
          | 
            
              JPS58120301A
              (en)
            
            *
            
           | 
          1982-01-12 | 
          1983-07-18 | 
          Sony Corp | 
          Band pass filter 
        | 
        
        
          | 
            
              US4593460A
              (en)
            
            *
            
           | 
          1983-12-30 | 
          1986-06-10 | 
          Motorola, Inc. | 
          Method to achieve a desired bandwidth at a given frequency in a dielectric resonator filter 
        | 
        
        
          | 
            
              US4559490A
              (en)
            
            *
            
           | 
          1983-12-30 | 
          1985-12-17 | 
          Motorola, Inc. | 
          Method for maintaining constant bandwidth over a frequency spectrum in a dielectric resonator filter 
        | 
        
        
          | 
            
              US4568894A
              (en)
            
            *
            
           | 
          1983-12-30 | 
          1986-02-04 | 
          Motorola, Inc. | 
          Dielectric resonator filter to achieve a desired bandwidth characteristic 
        | 
        
        
          | 
            
              JPS60250702A
              (en)
            
            *
            
           | 
          1984-05-25 | 
          1985-12-11 | 
          Murata Mfg Co Ltd | 
          Resonator having case 
        | 
        
        
          | 
            
              JPS6170404U
              (en)
            
            *
            
           | 
          1984-10-12 | 
          1986-05-14 | 
           | 
           | 
        
        
          | 
            
              US4575699A
              (en)
            
            *
            
           | 
          1984-11-23 | 
          1986-03-11 | 
          Tektronix, Inc. | 
          Dielectric resonator frequency selective network 
        | 
        
        
          | 
            
              JPS61121380U
              (en)
            
            *
            
           | 
          1985-01-16 | 
          1986-07-31 | 
           | 
           | 
        
        
          | 
            
              JPS61121379U
              (en)
            
            *
            
           | 
          1985-01-16 | 
          1986-07-31 | 
           | 
           | 
        
        
          | 
            
              US4682131A
              (en)
            
            *
            
           | 
          1985-06-07 | 
          1987-07-21 | 
          Motorola Inc. | 
          High-Q RF filter with printed circuit board mounting temperature compensated and impedance matched helical resonators 
        | 
        
        
          | 
            
              JPS63500134A
              (en)
            
            *
            
           | 
          1985-07-08 | 
          1988-01-14 | 
          スペイス・システムズ・ローラル・インコーポレイテッド | 
          
        Narrowband bandpass dielectric resonator filter
       
        | 
        
        
          | 
            
              JPH055689Y2
              (en)
            
            *
            
           | 
          1985-07-15 | 
          1993-02-15 | 
           | 
           | 
        
        
          | 
            
              US4646038A
              (en)
            
            *
            
           | 
          1986-04-07 | 
          1987-02-24 | 
          Motorola, Inc. | 
          Ceramic resonator filter with electromagnetic shielding 
        | 
        
        
          | 
            
              US4667172A
              (en)
            
            *
            
           | 
          1986-04-07 | 
          1987-05-19 | 
          Motorola, Inc. | 
          Ceramic transmitter combiner with variable electrical length tuning stub and coupling loop interface 
        | 
        
        
          | 
            
              JPS6393201A
              (en)
            
            *
            
           | 
          1986-10-07 | 
          1988-04-23 | 
          Nec Corp | 
          Dielectric resonator band-pass filter 
        | 
        
        
          | 
            
              US4940955A
              (en)
            
            *
            
           | 
          1989-01-03 | 
          1990-07-10 | 
          Motorola, Inc. | 
          Temperature compensated stripline structure 
        | 
        
        
          | 
            
              GB2234399B
              (en)
            
            *
            
           | 
          1989-06-21 | 
          1993-12-15 | 
          Murata Manufacturing Co | 
          Dielectric filter 
        | 
        
        
          | 
            
              JPH0341802A
              (en)
            
            *
            
           | 
          1989-07-07 | 
          1991-02-22 | 
          Ngk Spark Plug Co Ltd | 
          Temperature compensation type microwave strip line filter 
        | 
        
        
          | 
            
              GB9002120D0
              (en)
            
            *
            
           | 
          1990-01-31 | 
          1990-03-28 | 
          Marconi Co Ltd | 
          Dielectric resonant oscillator 
      | 
        
        
          | 
            
              US5065119A
              (en)
            
            *
            
           | 
          1990-03-02 | 
          1991-11-12 | 
          Orion Industries, Inc. | 
          Narrow-band, bandstop filter 
        | 
        
        
          | 
            
              US5191304A
              (en)
            
            *
            
           | 
          1990-03-02 | 
          1993-03-02 | 
          Orion Industries, Inc. | 
          Bandstop filter having symmetrically altered or compensated quarter wavelength transmission line sections 
        | 
        
        
          | 
            
              FI88979C
              (en)
            
            *
            
           | 
          1990-12-17 | 
          1993-07-26 | 
          Telenokia Oy | 
          
        highfrequency bandpass filter
       
        | 
        
        
          | 
            
              CA2073272C
              (en)
            
            *
            
           | 
          1991-07-08 | 
          1997-04-01 | 
          Kenjiro Higaki | 
          Microwave resonator of compound oxide superconductor material 
      | 
        
        
          | 
            
              US6011446A
              (en)
            
            *
            
           | 
          1998-05-21 | 
          2000-01-04 | 
          Delphi Components, Inc. | 
          RF/microwave oscillator having frequency-adjustable DC bias circuit 
        | 
        
        
          | 
            
              US6362708B1
              (en)
            
            
            
           | 
          1998-05-21 | 
          2002-03-26 | 
          Lucix Corporation | 
          Dielectric resonator tuning device 
        | 
        
        
          | 
            
              JP2000151228A
              (en)
            
            
            
           | 
          1998-11-09 | 
          2000-05-30 | 
          Murata Mfg Co Ltd | 
          Resonator device, oscillator, filter, duplexer and communication device 
        | 
        
        
          | 
            
              GB2431523B
              (en)
            
            *
            
           | 
          2004-01-28 | 
          2007-09-19 | 
          Ykc Corp | 
          Bandpass filter for differential signal,and multifrequency antenna provided with same 
        | 
        
        
          | 
            
              CN103633402B
              (en)
            
            *
            
           | 
          2013-12-16 | 
          2016-08-17 | 
          华为技术有限公司 | 
          Duplexer and communication system having the same 
        | 
        
        
          | 
            
              EP3540849B1
              (en)
            
            *
            
           | 
          2016-11-29 | 
          2022-01-05 | 
          Huawei Technologies Co., Ltd. | 
          Filter, and communication apparatus 
        |