Systems and implementations for inductance tuning systems that are configured to operate in a wide range of frequencies are provided herein, The subject matter described herein can in some embodiments include an inductance tuning system including at least one inductor connected to a first terminal, the at least one inductor comprising of a plurality of inductive elements that are substantially magnetically coupled to each other, wherein spacing between the inductive elements are substantially less than diameters of the windings, At least one capacitor can be connected between one or more of the plurality of inductive elements and a second terminal,

A high input impedance magnetic balun/transformer having a phase balancing network (PBN) and method of operating. The balun is fully configurable and trimmable post fabrication using independently adjustable resistive and reactive parts by changing the resistance of a programmed transistor, e.g., NMOS. Parallel connected legs each having a field effect transistors (FETs) that make up NMOS device alter the impedance at the balun output terminals. The ground terminal of a secondary winding or coil at an unbalanced, single-ended side is connected to a phase balancing network. The phase balancing network includes at least two parallel legs, each leg having a resistive element in the form of a transistor device and at least one leg including a capacitive element. The transistor device at a leg can be operated in a linear region to trim the resistance and capacitances at the unbalanced side in order to achieve proper phase balancing and amplitude matching.

Aspects of the disclosure are directed to a low noise T-coil design. In accordance with one aspect, an input/output (I/O) circuit includes a first T-coil, wherein the first T-coil includes a first set of two inductors connected to each other in series arranged to accommodate a first current flow to produce a first magnetic field with a first perpendicular direction; and a second T-coil, wherein the second T-coil includes a second set of two inductors connected to each other in series arranged to accommodate a second current flow to produce a second magnetic field with a second perpendicular direction; and wherein the second magnetic field cancels the first magnetic field.

Aspects of the disclosure are directed to a low noise T-coil design. In accordance with one aspect, an input/output (I/O) circuit includes a first T-coil, wherein the first T-coil includes a first set of two inductors connected to each other in series arranged to accommodate a first current flow to produce a first magnetic field with a first perpendicular direction; and a second T-coil, wherein the second T-coil includes a second set of two inductors connected to each other in series arranged to accommodate a second current flow to produce a second magnetic field with a second perpendicular direction; and wherein the second magnetic field cancels the first magnetic field.

Systems and implementations for inductance tuning systems that are configured to operate in a wide range of frequencies are provided herein. The subject matter described herein can in some embodiments include an inductance tuning system including at least one inductor connected to a first terminal, the at least one inductor comprising of a plurality of inductive elements that are substantially magnetically coupled to each other, wherein spacing between the inductive elements are substantially less than diameters of the windings. At least one capacitor can be connected between one or more of the plurality of inductive elements and a second terminal.

Systems and implementations for inductance tuning systems that are configured to operate in a wide range of frequencies are provided herein. The subject matter described herein can in some embodiments include an inductance tuning system including at least one inductor connected to a first terminal, the at least one inductor comprising of a plurality of inductive elements that are substantially magnetically coupled to each other, wherein spacing between the inductive elements are substantially less than diameters of the windings. At least one capacitor can be connected between one or more of the plurality of inductive elements and a second terminal.

Systems and implementations for inductance tuning systems that are configured to operate in a wide range of frequencies are provided herein. The subject matter described herein can in some embodiments include an inductance tuning system including at least one inductor connected to a first terminal, the at least one inductor comprising of a plurality of inductive elements that are substantially magnetically coupled to each other, wherein spacing between the inductive elements are substantially less than diameters of the windings. At least one capacitor can be connected between one or more of the plurality of inductive elements and a second terminal.

The present technology relates to a communication device and a control method, in which the variety of connection modes between electronic apparatuses can be increased. Provided are: a detection target mechanism detected when the first electronic apparatus is connected to a second electronic apparatus that receives a baseband signal output from the first electronic apparatus; a connection detecting unit adapted to detect a baseband signal output from the second electronic apparatus and to detect a connection between the first and second electronic apparatuses; and a control unit adapted to connect the detection target mechanism to the first electronic apparatus where a connection between the first electronic apparatus and the second electronic apparatus is detected by the connection detecting unit. The present technology is applicable to, for example, a scenario in which a universal serial bus (USB) host recognizes connection to a USB device.

A high frequency termination device includes a printed circuit board. A ground pad having a first predetermined inductive reactance at a resonant frequency can be mounted on the printed circuit board. A resistor landing pad having a second predetermined inductive reactance at the resonant frequency can be mounted on the printed circuit board. The resistor landing pad can be selectively positioned adjacent to the ground pad to create a desired capacitive reactance at the resonant frequency to cancel at least part of the first predetermined inductive reactance and the second predetermined inductive reactance. A terminating resistor can be coupled with the resistor landing pad. An impedance of the termination device is dominated by a resistance value of the terminating resistor at the resonant frequency due to cancellation of at least part of the first predetermined inductive reactance and the second predetermined inductive reactance at the resonant frequency.

A high frequency termination device includes a printed circuit board. A ground pad having a first predetermined inductive reactance at a resonant frequency can be mounted on the printed circuit board. A resistor landing pad having a second predetermined inductive reactance at the resonant frequency can be mounted on the printed circuit board. The resistor landing pad can be selectively positioned adjacent to the ground pad to create a desired capacitive reactance at the resonant frequency to cancel at least part of the first predetermined inductive reactance and the second predetermined inductive reactance. A terminating resistor can be coupled with the resistor landing pad. An impedance of the termination device is dominated by a resistance value of the terminating resistor at the resonant frequency due to cancellation of at least part of the first predetermined inductive reactance and the second predetermined inductive reactance at the resonant frequency.