Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
  • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
  • H03H11/00—Networks using active elements
  • H03H11/02—Multiple-port networks
  • H03H11/34—Networks for connecting several sources or loads working on different frequencies or frequency bands, to a common load or source
  • H03H11/342—Networks for connecting several sources or loads working on different frequencies or frequency bands, to a common load or source particularly adapted for use in common antenna systems
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
  • H04B1/06—Receivers
  • H04B1/16—Circuits
  • H04B1/1638—Special circuits to enhance selectivity of receivers not otherwise provided for
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
  • H04B1/06—Receivers
  • H04B1/16—Circuits
  • H04B1/26—Circuits for superheterodyne receivers

Landscapes

• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Computer Networks & Wireless Communication (AREA)
• Multimedia (AREA)
• Amplifiers (AREA)
• Circuits Of Receivers In General (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=22878391

Family Applications (1)

Country Status (5)

• 0
  • NL NL62094D patent/NL62094C/xx active
• 1938
  • 1938-10-07 US US233711A patent/US2221104A/en not_active Expired - Lifetime
• 1939
  • 1939-10-03 FR FR860593D patent/FR860593A/fr not_active Expired
  • 1939-10-06 CH CH213823D patent/CH213823A/de unknown
• 1947
  • 1947-08-08 GB GB21986/47A patent/GB615402A/en not_active Expired

Also Published As

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