A decode switch and a method for controlling a decode switch are provided. The decode switch includes a power source providing a first voltage, a source capacitance coupled to the power source, and a target capacitance coupled to the power source. The power source charges the source capacitance to the first voltage. The source capacitance is connected to the target capacitance and the source capacitance charges the target capacitance to a second voltage. The power source charges the target capacitance from the second voltage to the first voltage.

The invention relates to a device for protecting at least one active component of an electronic module, able to receive a microwave electromagnetic signal as input and to provide a microwave electromagnetic signal to said at least one active component. This device includes a delay module able to apply a predetermined delay time to the microwave electromagnetic input signal, connected in parallel with a switch-triggering device able to compare a power level of the microwave electromagnetic input signal to a power threshold and to command switching by a switch connected at the output of the delay module, an output of said switch providing the microwave electromagnetic signal to said at least one active component, the predetermined delay time being such that the switching is done before the arrival of the microwave electromagnetic output signal from the delay module.

A superconducting switch system includes a plurality of switch network circuits, each switch network circuit having a respective Josephson junction (JJ) coupled to a respective transmission line. The superconducting switch system furthermore includes a bias line coupled to each of the respective JJs such that a mutual inductive coupling between the bias line and the respective JJ of at least two switch network circuits of the plurality of switch network circuits are different from one another. A bias line current to the bias line controls the passing or blocking of a received input signal to an output for each of the plurality of switch network circuits by controlling an impedance of the respective JJ of each of the plurality of switch network circuits, the impedance of the respective JJ being determined based on the bias line current and the mutual inductive coupling between the bias line and the respective JJ.

In a multiplexer circuit which loads N data segments (N is an integer of N<M) led by an arbitrary data segment from a first register storing M data segments (M is an integer equal to or larger than two) to a second register, an intermediate register is disposed between the first register and the second register. A first selection circuit between the first register and the intermediate register and a second selection circuit between the intermediate register and the second register are designed based on a value of L for minimizing a circuit amount of the first selection circuit and the second selection circuit. The value of L for minimizing the circuit amount is calculated based on values of the M and the N. Therefore, it is possible to reduce the circuit amount of the multiplexer circuit capable of performing data access with respect to large-volume data.

An power voltage generating unit for a radio frequency switch includes a first input and a second input respectively configured to receive a first control signal and a second control signal, wherein the first control signal and the second control signal are configured to control which one of a plurality of paths in the radio frequency switch is enabled, and at least one output, configured to output an auxiliary voltage, derived from at least one of the first control signal or the second control signal, that is used to operate the radio frequency switch. The power voltage may be a voltage used to power an inverting circuit used to enable a selected branch as an isolation branch or shunt branch.

A radio frequency (RF) SPDT (single pole double throw) switch device for differential signal conversion is disclosed. According to one embodiment of the present disclosure, an RF SPDT switch device for differential signal conversion may include a central metal line; a first metal line and a second metal line connected to a first direction side of the central metal line; and a third metal line and a fourth metal line connected to a second direction side of the central metal line.

A multi-channel switch device is provided. The multi-channel switch device includes a first-stage switch circuit, at least one second-stage switch circuit, and multiple third-stage switch circuits. The first-stage switch circuit includes a first common-mode node, a first input/output terminal, and at least one first-stage connection terminal. The second-stage switch circuit includes a second common-mode node, a second-stage transmission terminal, and multiple second-stage connection terminals. Each of the third-stage switch circuits includes a third common-mode node, a third-stage transmission terminal, a reference terminal, and a second input/output terminal. Two of the first input/output terminal and the at least one first-stage connection terminal are connected through the first common-mode node. Two of the second-stage transmission terminal and the second-stage connection terminals are connected through the second common-mode node. Two of the third-stage transmission terminal, the reference terminal, and the second input/output terminal are connected through the third common-mode node.

A transmission unit including a transmission switch and an injection current control circuit is provided. The transmission switch includes a plurality of n-MOS and p-MOS transistors connected to one another in parallel, and the injection current control circuit includes an injection current detection circuit that is arranged for being activated upon detection of an injection current in an output side or an input side of the transmission unit, the transmission unit further includes a bypass circuit arranged for being activated by the injection current detection circuit and further arranged for bypassing the injection current to a ground upon detection of the injection current. A multiplexer, and demultiplexer including such a transmission unit is also provided herein.

The present description concerns a radio frequency switch comprising a control circuit configured to, in a radio frequency signal transmit mode, control a switching circuit with a first state originating from an output of a charge pump circuit, and, in a radio frequency signal receive mode, disable the charge pump circuit and control the switching circuit with a second state originating from a reference voltage.

Embodiments of this application disclose a gating apparatus and a gating method, to implement a gating function in a simple structure and matching form. In this application, an example gating apparatus includes four main branches, M loading branches, M radio frequency switches, and four ports. The M radio frequency switches are all grounded, and M is equal to 2 or 4. The four main branches are sequentially connected end to end, and one of the four ports is disposed at a junction of any two connected main branches in the four main branches. When M is equal to 4, each of the four main branches is connected to one of the four loading branches, and each loading branch is connected to one of the M radio frequency switches.