US PATENT SUBCLASS 333 / 100
.~ Having branched circuits

Current as of: June, 1999
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333 /   HD   WAVE TRANSMISSION LINES AND NETWORKS

1  DF  PLURAL CHANNEL SYSTEMS {4}
100.~ Having branched circuits {6}
101  DF  .~.~> Including switching means {3}
109  DF  .~.~> Using directional coupler {6}
117  DF  .~.~> Including hybrid-type network {4}
124  DF  .~.~> With impedance matching {4}
132  DF  .~.~> For providing frequency separation {2}
136  DF  .~.~> Including long line element {1}

DEFINITION

Classification: 333/100

Having branched circuits:

(under subclass 1) Systems including means for effecting an interchange of wave energy from one transmission line to two or more transmission lines, or vice versa, or having a coupling network for effecting an interchange of wave energy from a single input to plural outputs, or vice versa, of energy together with means for controlling or facilitating this interchange of energy.

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2+, for plural channel branched circuit systems having automatic controlled means to control the system.

4+, for plural channel systems and coupling networks wherein at least one of the transmission lines is a balanced line or where the network is especially designed for coupling to at

least one balanced line.

13, for resonator type breakdown discharge circuits which include a space discharge device designed to breakdown in response to high level energy (e.g., from the transmitting section of the system) to block substantially the flow of high level energy, and to pass low level energy along the transmission line (e.g., to a receiver). The devices in subclass 13 include T-R and R-T systems.

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174, Electricity: Conductors and Insulators, particularly 38, 43, 49, and 71+ for branched electrical conductor structures other than loaded lines and conductors defined as having long line characteristics.

307, Electrical Transmission or Interconnection Systems, particularly

11+, 43+, and 147+ for miscellaneous electrical distribution systems which include branched circuits.

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

407+, for miscellaneous circuits for use in coupling plural channels to a single channel.

331, Oscillators,

60+, for an electrical oscillation generator provided with plural output circuits.

343, Communications: Radio Wave Antennas,

771, for plural slot-type antennas with wave guide coupling; subclasses 776+ for plural waveguide type antennas with coupling; subclasses 814 and 816 for plural balanced doublet type antennas with a coupling network; subclasses 853+ for plural antennas generally with a coupling network; subclass 858 for antennas coupled to plural lead-ins.

375, Pulse or Digital Communications,

268+, 353 for duplex systems having an antenna coupling network coupling a transmitter and a receiver to an antenna.

439, Electrical Connectors, 150+, and 242 for multiple connector structure; subclasses 241+ for line tapper connector structure such as alligator clips and test probes.

455, Telecommunications,

132+, for antenna coupling networks for plural receivers where the coupling network includes an active element and/or significant receiver structure; and subclasses 103+ for similar subject matter for transmitters.