A choke comprising a ferrite core (202) having a first diameter (204); a conductor (206) wound around the core into a plurality of windings characteristic to a first frequency range of the RF signals, wherein a first end (206a) of said windings is substantially aligned with a first end (202a) of the core (202) and a subset of said windings (206b), from a second end of said windings, extends beyond a second end of the core (202b) or surrounds a length of the second end of the core, wherein said length of the second end of the core has a second smaller diameter (208), for extending an upper frequency edge of the first frequency range.

A choke comprising a ferrite core (202) having a first diameter (204); a conductor (206) wound around the core into a plurality of windings characteristic to a first frequency range of the RF signals, wherein a first end (206a) of said windings is substantially aligned with a first end (202a) of the core (202) and a subset of said windings (206b), from a second end of said windings, extends beyond a second end of the core (202b) or surrounds a length of the second end of the core, wherein said length of the second end of the core has a second smaller diameter (208), for extending an upper frequency edge of the first frequency range.

Systems, apparatuses, and methods for performing efficient data transfer in a computing system are disclosed. A computing system includes multiple transmitters sending singled-ended data signals to multiple receivers. In order to better handle noise issues when using single-ended signaling, one or more of the receivers include equalization circuitry and termination circuitry. The termination circuitry prevents reflection on a corresponding transmission line ending at a corresponding receiver. The equalization circuitry uses a bridged T-coil circuit to provide continuous time linear equalization (CTLE) with no feedback loop. The equalization circuitry performs equalization by providing a high-pass filter that offsets the low-pass characteristics of a corresponding transmission line. A comparator of the receiver receives the input signal and compares it to a reference voltage. The placement of the comparator and the ratio of the inductances of the inductors of the bridged T-coil circuit are based on whether the receiver includes self-diagnostic circuitry.

Systems, apparatuses, and methods for performing efficient data transfer in a computing system are disclosed. A computing system includes multiple transmitters sending singled-ended data signals to multiple receivers. In order to better handle noise issues when using single-ended signaling, one or more of the receivers include equalization circuitry and termination circuitry. The termination circuitry prevents reflection on a corresponding transmission line ending at a corresponding receiver. The equalization circuitry uses a bridged T-coil circuit to provide continuous time linear equalization (CTLE) with no feedback loop. The equalization circuitry performs equalization by providing a high-pass filter that offsets the low-pass characteristics of a corresponding transmission line. A comparator of the receiver receives the input signal and compares it to a reference voltage. The placement of the comparator and the ratio of the inductances of the inductors of the bridged T-coil circuit are based on whether the receiver includes self-diagnostic circuitry.

In certain embodiments, an assembly has intermediate pods magnetically, but not galvanically, coupled along an electrically conductive cable. Each pod has a magnetic core surrounding and inductively coupled to the cable and one or more coils inductively coupled to the magnetic core. The pod transmits, for example, outgoing current pulses on the cable by inducing electrical signals in the cable using a transmitter coil and the magnetic core. In addition, the pod repeats, for example, incoming current pulses on the cable by inducing electrical signals in the cable using the transmitter coil and the magnetic core, based on electrical signals induced in a receiver coil via the magnetic core by the incoming current pulses. Such an assembly can function as a data collection system for scientific research and/or as an early-warning system for events, such as earthquakes and tsunamis, without having to modify the cable itself.

A circuit module includes a wiring board on which are provided a ground plane, a signal line, and a conductive pattern for connection to an outer conductor of a coaxial cable including an inner conductor and the outer conductor. A common-mode choke coil is mounted on the wiring board such that one of coils of the common-mode choke coil connects the ground plane and the conductive pattern and that the other coil is inserted in the signal line. A communication element is mounted on the wiring board and includes a first signal terminal and a second signal terminal. The first signal terminal is connected to the common-mode choke coil via the signal line, and the second signal terminal is connected to the ground plane. A first capacitor is inserted in series in the signal line between the common-mode choke coil and the first signal terminal.

The present technique relates to a cable apparatus, a noise canceling apparatus, and a noise canceling method that allow reliable removal of noise induced by a radio wave. A cable apparatus is provided with wiring for input which is electrically connected to a device and through which an input signal and an RF noise signal induced are transmitted, and wiring for noise detection which is electrically connected to an adjustment element enabled to be adjusted to an impedance corresponding to an input impedance of an output circuit of the device and in which the RF noise signal is induced. Thus, noise included in a signal from the first wiring can be reliably removed. The present technique can be applied to a noise canceling system, for example.

The present technique relates to a cable apparatus, a noise canceling apparatus, and a noise canceling method that allow reliable removal of noise induced by a radio wave. A cable apparatus is provided with wiring for input which is electrically connected to a device and through which an input signal and an RF noise signal induced are transmitted, and wiring for noise detection which is electrically connected to an adjustment element enabled to be adjusted to an impedance corresponding to an input impedance of an output circuit of the device and in which the RF noise signal is induced. Thus, noise included in a signal from the first wiring can be reliably removed. The present technique can be applied to a noise canceling system, for example.

A network device includes an interface configured to be coupled to a transmission line that simultaneously carries AC power and RF modulated content; content processing circuitry configured to route content communicated via the transmission line to one or more secondary network devices; and a component coupled to the interface to couple and decouple RF modulated content together with AC power communicated over the conductor extending the RF spectrum to 3 GHz. The component includes a core. The core includes a first portion having a conical geometry and a second portion having a cylindrical geometry. A wire makes a plurality of turns around the core starting from the first portion and ending in the second portion.

A network device includes an interface configured to be coupled to a transmission line that simultaneously carries AC power and RF modulated content; content processing circuitry configured to route content communicated via the transmission line to one or more secondary network devices; and a component coupled to the interface to couple and decouple RF modulated content together with AC power communicated over the conductor extending the RF spectrum to 3 GHz. The component includes a core. The core includes a first portion having a conical geometry and a second portion having a cylindrical geometry. A wire makes a plurality of turns around the core starting from the first portion and ending in the second portion.