Abstract:
Systems and methods for synchronous demodulation using passive sampled analog filtering are disclosed. A system for synchronous demodulation includes an input channel for accepting an input signal, a first passive sampled analog filter for filtering the input signal, a mixer for mixing the filtered input signal and outputting a mixed signal, a second passive sampled analog filter for filtering the mixed signal, and an output channel for outputting the filtered mixed signal.
Abstract:
There is described a connecting board for a power supply unit, comprising at least one power converter, at least one filtering unit connected to an input of the at least one power converter, a controller connected to the at least one power converter and the at least one filtering unit, and at least one output pin connected to the output of the at least one power converter. The filtering unit comprises interconnected components each having a resistive or a capacitive value, the resistive or capacitive value controlling at least one operating parameter of the power converter. The controller is configured to adjust the resistive or capacitive value for causing a given one of a plurality of voltages to be produced at an output of the power converter. The output pin is configured to receive the given voltage and to deliver the given voltage to a load.
Abstract:
Apparatus and methods for high voltage variable capacitors are provided herein. In certain configurations, an integrated circuit (IC) includes a variable capacitor array and a bias voltage generation circuit that biases the variable capacitor array to control the array's capacitance. The variable capacitor array includes a plurality of variable capacitor cells electrically connected in parallel between a radio frequency (RF) input and an RF output of the IC. Additionally, each of the variable capacitor cells can include a cascade of two or more pairs of anti-series metal oxide semiconductor (MOS) capacitors between the RF input and the RF output. The pairs of anti-series MOS capacitors include a first MOS capacitor and a second MOS capacitor electrically connected in anti-series. The bias voltage generation circuit generates bias voltages for biasing the MOS capacitors of the variable capacitor cells.
Abstract:
An electronic device comprises: a first signal line configured to transmit a noise signal; a filter configured to transmit at least part of the noise signal from the first signal line; and a second signal line configured to transmit the at least part of the noise signal transmitted via the filter, wherein both ends of the filter are connected to the first signal line and the second signal line.
Abstract:
A negative group delay circuit (200, 300) comprising a negative group delay component (205, 600, 100), also comprising a circulator (220, 320) with three ports (206, 207, 250), further comprising a first resonator (230), with the negative group delay component (205) arranged between an input port (210) of the negative group delay circuit (200, 300) and a first port (206) in the circulator (220, 320). The first resonator (230) is arranged between a second port (207) of the circulator (220, 320) and a first reflection amplifier (240), so that signals reflected from the first reflection amplifier (240) to the second port (207) of the circulator (220; 320) through the first resonator (230) are emitted at the third port (250) of the circulator (220; 320). The third port is arranged to be used as an output port of the negative group delay circuit (200, 300).
Abstract:
Systems, devices, circuits, and methods are provided for an improved mass spectrometry detection system that comprises at least one component that operates at a high voltage. A number of high voltage filters or circuits are provided for reducing noise from high voltage power supplies that produce positive and negative voltages. In some embodiments, the filters can comprise one or more diodes. In some embodiments, the filters can comprise one or more transistors. In some embodiments, the filters can comprise one or more transistor pairs. A variety of embodiments of systems, devices, circuits, and methods in conjunction with the disclosures are provided.
Abstract:
본 발명은 나선형 인덕터를 이용한 LC 회로의 제어 장치에 관한 것이다. 본 발명에 따르면, 제1 단자가 연결된 제1 금속선과, 제2 단자가 연결된 제2 금속선이 적어도 한번 교차하여 나선형으로 연결되어 있으며 적어도 하나의 교차부를 구비하는 나선형 인덕터와, 상기 교차부에 해당되는 제1 금속선 부분과 제2 금속선 부분에 각각 드레인 및 소스 단자가 연결되어 있는 적어도 하나의 트랜지스터와, 상기 나선형 인턱터의 제1 단자 및 제2 단자와 병렬 연결된 가변형 캐패시터, 및 상기 트랜지스터 및 상기 가변형 캐캐패시터에 각각의 제어 신호를 전달하여 공진 주파수 또는 출력을 조절하는 컨트롤러를 포함하는 나선형 인덕터를 이용한 LC 회로의 제어 장치를 제공한다. 이에 따라, 나선형 인덕터의 멀티 모드 및 광대역 모드 동작의 구현이 가능한 이점이 있다.