Various NLTL frequency comb generator embodiments are disclosed for broadband impedance matching to generate an output signal comprising broadband harmonics of an input signal. The NLTL frequency comb generator comprises a plurality of segments cascaded in series, with each segment comprising a series inductor and a non-linear shunt capacitor. The non-linear shunt capacitor may couple to corresponding series inductors in the same polarity. A broadband biasing circuit feeds a DC bias or DC ground to the non-linear shunt capacitors for broadband input and output impedance matching. The broadband biasing circuit may be a low pass filter to prevent RF signal from leaking through the biasing circuit. The NLTL frequency comb generator, the broadband biasing circuit, and an output DC blocking capacitor may be integrated in a single chip in a compact packaging to achieve a broadband input/output impedance matching without relying on external lumped matching components.

Various NLTL frequency comb generator embodiments are disclosed for broadband impedance matching to generate an output signal comprising broadband harmonics of an input signal. The NLTL frequency comb generator comprises a plurality of segments cascaded in series, with each segment comprising a series inductor and a non-linear shunt capacitor. The non-linear shunt capacitor may couple to corresponding series inductors in the same polarity. A broadband biasing circuit feeds a DC bias or DC ground to the non-linear shunt capacitors for broadband input and output impedance matching. The broadband biasing circuit may be a low pass filter to prevent RF signal from leaking through the biasing circuit. The NLTL frequency comb generator, the broadband biasing circuit, and an output DC blocking capacitor may be integrated in a single chip in a compact packaging to achieve a broadband input/output impedance matching without relying on external lumped matching components.

A directional coupler (1) includes a substrate (10), a main line (20) formed directly or indirectly on the substrate (10), sub-lines (21, 22 and 23) at least part of each of which is formed directly or indirectly on the substrate (10) along the main line (20), a switch (30) switching connections among end portions of the plurality of sub-lines (21, 22 and 23), and detection output terminals (FWD and REV) connected to the sub-line (21), wherein, when looking at the substrate (10) in plan, the end portions of the sub-lines (21, 22 and 23) are disposed on the same side as the detection output terminals (FWD and REV) relative to the main line (20), and the sub-line (21) to which the detection output terminals (FWD and REV) are connected is overlapped with or surrounded by the sub-lines (22 and 23).

A high peak bandwidth I/O channel embedded within a multilayer surface interface that forms the bus circuitry electrically interfacing the output or input port on a first semiconductor die with the input or output port on a second semiconductor die.

A high peak bandwidth I/O channel embedded within a multilayer surface interface that forms the bus circuitry electrically interfacing the output or input port on a first semiconductor die with the input or output port on a second semiconductor die.

Input impedance networks and associated methods are disclosed. An input impedance network comprises a source-terminal-pair configured to couple to a power source, a recovered-power-terminal-pair configured to couple to a power sink, a transmission line coupled to the source-terminal-pair that comprises M sections, and N clamping circuits. Each of the N clamping circuits is configured to clamp at least one of voltage or current in one of the M sections, and a power recovery circuit is coupled to the N clamping circuits to enable recovered energy to be applied to the recovered-power-terminal-pair.

The present invention includes a device and method for making an RF circulator/isolator device comprising: a substrate comprising one or more conductive coils, wherein the one or more conductive coils are formed in, on, or about the substrate; an opening in the substrate comprising an iron core, wherein the iron core is formed in the substrate after the formation of the one or more conductive coils, wherein the iron core is positioned and shaped to create a circulator/isolator in the substrate; and one or more connectors, vias, resistors, capacitors, or other integrated circuits of devices connected to the conductive coils of the circulator/isolator.

A non-reciprocal filter with parametric amplification to obtain non-reciprocal propagation of forward and reverse signals is disclosed. The non-reciprocal filter may include two asymmetrical transmission lines and a current source. The filter, when implemented in the acoustics domain using surface acoustic waves (SAW), may operate in a phase-coherent or a phase-incoherent degenerate mode, providing low insertion loss and high decibels of isolation.

An antenna array containing two or more radiating elements, with nearest neighbor radiating elements connected together with a non-Foster circuit at terminals of the radiating elements such that mutual reactance of the elements is reduced over a wider bandwidth than which would be obtained if the non-Foster circuits were omitted.

An antenna array containing two or more radiating elements, with nearest neighbor radiating elements connected together with a non-Foster circuit at terminals of the radiating elements such that mutual reactance of the elements is reduced over a wider bandwidth than which would be obtained if the non-Foster circuits were omitted.