Abstract: A tunable filter comprises at least two resonator circuits placed between two matching networks characterized in that: one resonator is connected at a first of its ends to the ground plane M of the filter by metallized holes and at a second end to a MEMS network; the distance between the two resonators forms an inter-resonator inductive coupling circuit; an inter-resonator coupling capacitor is formed by two etched lines connected to the first and second resonators; the MEMS networks are distributed around the ends of the resonators; the MEMS networks are connected between the first and second resonator and the ground plane M by means of metallized holes; and the filter comprises a number of independent electrical control voltages designed to actuate the MEMS.

Abstract: A duplexer is proposed with a substrate which has at least one patterned metallization plane and on which, at least to some extent, a transmission path (TX) and a reception path (RX) are arranged, both of which are connected to an antenna connection (ANT). The duplexer comprises a transmission filter (TXF) which is arranged in the transmission path (TX) and which has a first acoustic wave filter (BAW1) with one or more resonators. Furthermore, the duplexer (DPL) comprises a reception filter (RXF) which is arranged in the reception path (RX) on the antenna side and which has a second acoustic wave filter (BAW2) with one or more resonators and also a single-ended output.

Abstract: AC-coupled termination and equalization, including transmit equalization and/or receive equalization, are combined to create a high bandwidth channel that requires no special coding and consumes no or negligible DC current.

Abstract: An antenna circuit is having an impedance circuit which can cancel signal leakage from the input port into the isolation port of a directional coupler. The antenna circuit further comprises a second impedance circuit for optimizing power transfer from the input port to the output port of the directional coupler. Furthermore, the antenna is tunable in order to maximize the reception strength of the antenna. The antenna circuit provides at once the possibility of tuning the antenna strength, optimizing the power transmission and reducing signal jamming by cancelling signal leakage. The antenna finds use as an effective and miniature RFID antenna.

Abstract: A signal transmission apparatus includes: a transmission section adapted to transmit a transmission object signal as a radio wave; a reception section adapted to receive the radio wave transmitted from the transmission section and output an electric signal corresponding to the received radio wave; and a connection section adapted to connect a first housing and a second housing of an electronic instrument pivotably around a center axis; the connection section having a radio signal transmission line formed therein by which wireless transmission can be carried out between the transmission section and the reception section.

Abstract: A device comprises at the input a first component (PA) having a first output impedance (Z1), at the output a second component (ANT) having a second input impedance (Z2), and an impedance-matching network between said first and second components. Because the first and/or the second impedance vary/varies, said impedance-matching network comprises a filter (Fadp), with an impedance that is matchable to the first and second impedances, located between said first and second components and comprising at least two acoustic wave coupled resonators. At least one of the resonators comprises a perovskite type material and means for applying a voltage to said resonator, which enable the permittivity and the impedance thereof to be varied.

Abstract: A dielectric-based nonlinear transmission line (NLTL) coupled to an adjacent waveguide. Energy in an input pulse to the nonlinear transmission line is concentrated into an electromagnetic shock or a series of soliton-like oscillations by the nonlinear properties of the NLTL. Energy from the electromagnetic shock or the soliton-like oscillations are transferred into the waveguide. A plate of the NLTL coupled to the waveguide can include an aperture or a series of apertures. Energy from the electromagnetic shock or the soliton-like oscillations can then be transferred into waveguide via an aperture or apertures in such a way that forward and/or backward guided electromagnetic waves are generated in the waveguide. The waveguide can contain at a nonlinear magnetic material, a dielectric material, a slow wave structure, or a metamaterial. The NLTL can include nonlinear dielectric elements such as a periodic array interspersed with linear dielectric elements.

Abstract: Some embodiments relate to a device and method for a band pass filter with a reduced cost, area penalty, and manufacturing complexity relative to current solutions. An integrated passive device chip includes a plurality of capacitors embedded in a common molding compound along with a transceiver chip. The integrated passive device chip and the transceiver chip are also arranged within a polymer package. An ultra-thick metallization layer is disposed within the polymer package and configured to couple the integrated passive device chip to the transceiver chip. The ultra-thick metallization layer also forms a plurality of transmission lines, wherein the combined integrated passive device chip and transmission lines form a band pass filter with improved frequency response, noise immunity, and cost and area as compared to conventional solutions.

Abstract: An impedance matching network comprises a first and a second signal terminal and a reference potential terminal. The network further comprises a first shunt branch between the first signal terminal and the reference potential terminal, the first shunt branch comprising a variable inductive element and a first capacitive element. The impedance matching network also comprises a second shunt branch between the second signal terminal and the reference potential terminal and comprising a second capacitive element. A series branch between the first signal terminal and the second signal terminal comprises a third capacitive element. Optionally, the first, second, and/or third capacitive element may be implemented as a variable capacitive element. The variable capacitive element comprises a plurality of transistors, wherein a combination of off-capacitances Coff of the transistors provide an overall capacitance of the variable capacitive element as a function of at least two independent transistor control signals.

Abstract: A microwave connector is provided. The microwave connector includes an outer conductor, an inner conductor disposed within the outer conductor and dielectric materials interposed between the outer conductor and the inner conductor, the dielectric materials including a non-dissipative dielectric material and a dissipative dielectric material.

Abstract: The present invention relates to a via structure having an open stub and a printed circuit board having the same. In accordance with an embodiment of the present invention, a via structure having an open stub including: a signal transmission via passing through an insulating layer; upper and lower via pads for connecting first and second transmission lines, which are respectively formed on and under the insulating layer, and the signal transmission via; and at least one open stub connected to an outer periphery of each via pad to have a shunt capacitance with each ground pattern formed on and under the insulating layer is provided. Further, a printed circuit board with a via having an open stub is provided.

Abstract: In some examples, a device includes a waveguide transition section comprising a first mode suppressor, an attenuation section coupled to the first waveguide transition section via a first adjustable rotation joint, wherein the attenuation section is operable to attenuate the electromagnetic signal, and a first quarter-wave plate section coupled to the attenuation section, wherein the first quarter-wave plate section is operable to introduce a first differential phase shift between a first mode of the electromagnetic signal and a second mode of the electromagnetic signal. The device also includes a second quarter-wave plate section coupled to the first quarter-wave plate section via a second adjustable rotation joint, wherein the second quarter-wave plate section is operable to introduce a second differential phase shift between the second mode of the electromagnetic signal and the first mode of the electromagnetic signal.

Abstract: A printed circuit board is disclosed. The printed circuit board includes a first signal transmission layer, a via and a second signal transmission layer. The via connects the first signal transmission layer to the second signal transmission layer. The via includes a first region made of a first dielectric material having a first dielectric constant, and a second region made of a second dielectric material having a second dielectric constant lower than the first dielectric constant. The via allows AC Component of an electromagnetic signal to be transmitted from the first signal transmission layer to the second signal transmission layer while blocking any DC component of the electromagnetic signal.

Abstract: An acoustic wave device includes: a piezoelectric substrate; a dielectric layer formed on the piezoelectric substrate; and first and second comb-tooth electrodes formed on the dielectric layer, the dielectric layer having a first thickness between the first comb-tooth electrodes and the piezoelectric substrate and a second thickness between the second comb-tooth electrodes and the piezoelectric substrate, the first and second thicknesses being different from each other.

Abstract: The present invention provides a high frequency circuit, a high frequency circuit component, and a communication apparatus that uses the same, the circuit capable of being used for different communication systems, having a high receiving sensitivity and restraining the loss of transmission power. A high frequency circuit of the present invention includes: a first antenna terminal (ANT1) and a second antenna terminal (ANT2); and at least a transmitting terminal (Tx) and a first and a second receiving terminal (Rx1, Rx2) for a first communication system. With each switch, the first and the second receiving terminals (Rx1, Rx2) can be each simultaneously connected to the first and the second antenna terminals (ANT1, ANT2). Also, the transmitting terminal (Tx) is selectively connectable to either of the first and second antenna terminals (ANT1, ANT2).

Abstract: The invention relates to an acoustic volume wave resonator including a mounting, a resonating substrate, and a diaphragm. The mounting comprises an internal cavity and an internal electrode, so as to form a gap area between the internal electrode and a portion of the diaphragm. The resonating substrate is configured to generate longitudinal mode acoustic waves vibrating at the work frequency of the resonator, when an electrostatic field having a sinusoidal component at a work frequency is generated in the gap area by applying a differential voltage between the diaphragm or the first surface of the resonating substrate on the one hand and the internal electrode on the other hand.

Abstract: A phase shifter and related load device are provided. The phase shifter includes a phase shifter core and load devices. The phase shifter core has an input port for receiving an input signal, an output port for outputting an output signal, and connection ports. The load devices are coupled to the connection ports, respectively. At least one of the load devices includes first varactor units each having a first node and a second node, where first nodes of the first varactor units are coupled to a first voltage, second nodes of the first varactor units are respectively coupled to a plurality of second voltages, and the second voltages include at least two voltages different from each other. The phase shifter and related load device are capable of mitigating effects resulted from varactor's non-linear C-V curve.

Abstract: A phased-array RF pulse generator is disclosed which includes a video-pulse generator arranged to generate video pulses each having a leading edge. An array of nonlinear and dispersive transmission lines, are arranged to generate RF pulses from the video pulses. At least one sensor is arranged to detect the leading edge of the video pulses after they have passed along the transmission lines. A phase controller is arranged to set the velocity of the video pulses in each transmission line to put the detected leading edges, and hence the generated RF pulses, into a desired phase relationship.

Abstract: A programmable passive peaking equalizer that can compensate for a frequency dependent loss of a variety of data channels is disclosed herein. Monotonic increase in signal loss vs. frequency of board traces, cables and even fiber causes significant distortion of transmitted data referred to as inter-symbol interference (ISI). Some embodiments of programmable passive equalizers disclosed herein can minimize ISI for a wide range of data channels with very low power penalty. Various embodiments of the passive equalizer can program the amount of peaking that occurs at the Nyquist frequency of the data rate, and hence compensates for high frequency signal loss. This in turn equalizes the high frequency patterns in the transmitted data stream, effectively eliminating the worst case ISI.

Abstract: A duplexer includes: a transmit filter that is connected between an antenna terminal and a transmit terminal and has a plurality of acoustic wave resonators; a receive filter that is connected between the antenna terminal and a receive terminal and has a plurality of acoustic wave resonators; and a delay line or a longitudinal coupling type resonator that is connected in parallel with at least one of the plurality of acoustic wave resonators of the transmit filter and the plurality of acoustic wave resonators of the receive filter and has at least two IDTs (Interdigital Transducers).