An electro-magnetic transmission line system having very low loss, which includes a low dielectric material proximate to a conductor on one side, a conductor on the opposite side and a substrate to which at least one of the conductors are attached. Also an antenna is provided, which incorporate the electro-magnetic transmission line system to transmit the radiation energy.

A load-modulation detection component for an inductive coupling reader device. The load-modulation receiver device is arranged to receive an antenna voltage signal representative of a voltage across an antenna of the inductive coupling reader device and output at least one load-modulated signal. The load-modulation detection component comprises a down-converter component arranged to mix the antenna voltage signal with a down-conversion signal to generate a down-converted signal, a series capacitive component coupled in series between an output of the down-converter component and an output of the load-modulation receiver, and a switched capacitor resistor circuit coupled between the output of the load-modulation receiver and a first reference voltage.

A front-end module in compact printed circuit board (PCB) package. The module comprises a PCB comprising a top surface, the top surface comprising a first portion. The module also comprises a power amplifier block disposed on the PCB, the power amplifier block comprising a power amplifier and an output-matching network (OMN) transformer. The power amplifier is coupled to the first portion of the top surface. The OMN transformer is positioned in the PCB vertically under the power amplifier at a first level below the top surface. The module is provided in a compact package with the power amplifier block in the first portion and other functional blocks comprising a filter block, a switch block, a control block, and a low-noise amplifier block, and being disposed on a remaining area of the PCB, outside of the first portion.

The invention provides an impedance conversion device for a vehicle-mounted gigabit Ethernet chip adaptive to a coaxial cable transmission, and relates to the technical field of Ethernet communication. The impedance conversion device has a first impedance loop, a cable wiring end of the first impedance loop is connected with the coaxial cable, and a chip wiring end of the first impedance loop is connected with a first signal output end of the vehicle-mounted Ethernet chip; a first chip resistor is connected between a first signal input end and the first signal output end of the vehicle-mounted Ethernet chip, and the sum of an impedance value of the first impedance loop and a resistance value of the first chip resistor is equal to an equivalent resistance value of the coaxial cable.

Systems, methods and apparatus are provided for bi-directional I/O bandwidth enhancement via capacitive reactance reduction. An example apparatus can comprise a first signal driver of a transceiver, a second signal driver of the transceiver, an input/output (I/O) pad, and a y-coil, wherein the y-coil includes a first inductor coupled to the first signal driver of the transceiver, a second inductor coupled to the second signal driver of the transceiver, and a third inductor coupled to the I/O pad.

The disclosure relates to an antenna system comprising: a transceiver & control unit configured to control the antenna system and to generate a RF transceiver signal; a compensator connected to the transceiver & control unit through a connecting line, the compensator being configured to compensate for signal losses occurring for the RF transceiver signal in the connecting line between the transceiver & control unit and the compensator; an antenna interface provided at the compensator configured to transmit an antenna output signal with a variable output power; and a bidirectional communication line configured to provide a bidirectional communication between the compensator and the transceiver & control unit, wherein the transceiver & control unit is configured to indicate to the compensator through the bidirectional communication line a desired value of the variable output power to be present at the antenna interface when the antenna output signal is output by the antenna interface.

A transceiver comprising: a transmitter configured to transmit a signal comprising differential voltages to at least a first terminal and a second terminal; at least one receiver; a controller configured to provide control signals to the transmitter to cause the transmitter to transmit symbols, wherein each symbol comprises a predefined set of said differential voltages including at least a positive differential voltage and a negative differential voltage; and a signal balance module configured, for one or more symbols, to: determine a first duration of the positive differential voltage of said one or more symbols; determine a second duration of the negative differential voltage of said one or more symbols; based on determination of a difference between the first and second durations, provide for control of the controller or control of the transmitter to reduce the difference between the first and second durations in a further symbol relative to the one or more symbols.

A canceler device includes: a line connector having a first terminal, a second terminal, and a third terminal, the line connector being configured to output a signal provided to the first terminal to the second terminal; and a reflection circuit to output a reflected wave of the signal output to the second terminal to the third terminal. The reflection circuit includes: a first variable resistor having a first end connected to the second terminal; a second variable resistor having a first end connected to the second terminal and a second end grounded; and a parallel resonance circuit having a first end connected to a second end of the first variable resistor and a second end grounded.

The invention provides an impedance conversion device for a vehicle-mounted gigabit Ethernet chip adaptive to a coaxial cable transmission, and relates to the technical field of Ethernet communication. The impedance conversion device has a first impedance loop, a cable wiring end of the first impedance loop is connected with the coaxial cable, and a chip wiring end of the first impedance loop is connected with a first signal output end of the vehicle-mounted Ethernet chip; a first chip resistor is connected between a first signal input end and the first signal output end of the vehicle-mounted Ethernet chip, and the sum of an impedance value of the first impedance loop and a resistance value of the first chip resistor is equal to an equivalent resistance value of the coaxial cable.

A transceiver hybrid includes a multi-layer laminated hybrid comprising a coupler, the coupler including a first metal layer in a first layer of the multi-layer laminated hybrid having a first end coupled to a termination terminal and a second end coupled to a quadrature terminal; and a second metal layer in a second layer of the multi-layer laminated hybrid having a first end coupled to an antenna terminal, and a second end coupled to an in-phase terminal, wherein a width of the first metal layer is greater than a width of the second metal layer, such that a registration error margin is formed between the first metal layer and the second metal layer.