摘要:
A DC offset cancellation circuit includes: a control signal generation unit generating i (i is a natural number) number of pulse signals having a pulse width corresponding to a DC offset amount; a current source supplying i number of currents each having a different current ratio; a switching unit determining a current quantity to be supplied to a feedback capacitor by adjusting a turn-on quantity of each of the i number of currents according to the pulse width of each of the i number of pulse signals; and an electric charge quantity regulation unit charging DC offset electric charges corresponding to current supplied from the switching unit through the feedback capacitor and transferring the DC offset electric charges charged in the feedback capacitor to a sampling capacitor through a rotary capacitor, to allow the sampling capacitor to primarily store the DC offset electric charges and then secondarily store electric charges corresponding to an input signal. s
摘要翻译:DC偏移消除电路包括:控制信号生成单元,生成具有对应于DC偏移量的脉冲宽度的i(i是自然数)个脉冲信号; 电流源,其提供i个具有不同电流比的电流; 切换单元,根据i个脉冲信号中的每一个的脉冲宽度,调整i个电流的导通量,确定要提供给反馈电容器的电流量; 电荷量调节单元对通过反馈电容器从开关单元提供的电流充电DC偏移电荷,并将通过旋转电容器将充电在反馈电容器中的DC偏置电荷传送到采样电容器,以允许采样电容器 主要存储DC偏移电荷,然后二次存储对应于输入信号的电荷。 s
摘要:
A discrete-time receiver includes: a sampling mixer sampling an input signal according to a sampling clock; a discrete-time filter adjusting a decimation rate by using a control signal and filtering the sampled signal by using a filter clock; and a clock generator generating a sampling clock to be supplied to the sampling mixer, and generating the control signal and the filter clock by comparing the frequency of the sampling clock with a pre-set output frequency. Over a broadband input signal, a dynamic range of an output signal can be improved.
摘要:
A voltage controlled oscillator includes a resonant circuit including one or more transformers and a plurality of variable capacitor circuits connected in parallel to the one or more transformers and generating a plurality of oscillation frequencies having multiple phases, and a negative resistance circuit including a plurality of transistors cross-coupled via the one or more transformers and generating negative resistance for maintaining the oscillation of the resonant circuit.
摘要:
The present invention relates to a plate holder and a liquid crystal display having the same. There is provided a plate holder for fixing a plate in a liquid crystal display. The plate holder includes a base portion, a body portion formed on an end of the base portion and laterally extending therefrom, and a head portion formed at a distal end of the body portion. The body portion includes a first body portion and a second body portion disposed to be spaced apart by a predetermined interval from and to face the first body portion.
摘要:
A separation type chassis for a flat panel display includes at least two chassis members, and a plurality of fastening members for coupling the chassis members, and coupling holes having a predetermined shape are formed at both ends of each of the chassis members. Each of the fastening members is coupled with the coupling holes.
摘要:
An amplification cell employing a linearization scheme and an active inductor using the same are provided. The active inductor includes: first and second amplification cells each including a main amplifying unit amplifying an input signal, an auxiliary amplifying unit connected in parallel to the main amplifying unit and eliminating nonlinear characteristics of the main amplifying unit while amplifying the input signal, and a negative load unit connected to an output terminal of the main amplifying unit and that of the auxiliary amplifying unit; a plurality of load resistors for tuning frequency; and a plurality of capacitors for tuning frequency, wherein an output from the first amplification cell is negatively fed back to the second amplification cell, an output from the second amplification cell is negatively fed back to the first amplification cell, and the plurality of load resistors and the plurality of capacitors are disposed on negative feedback paths of the first and second amplification cells.
摘要:
The discrete-time receiver system includes: a voltage current conversion device low-noise-amplifying an input voltage signal, and converting the amplified signal into a current signal; a first filter performing IIR filtering on the current signal output from the voltage current conversion device; a discrete-time filter performing FIR filtering on a signal output from the first filter; and a second filter performing IIR filtering on a signal output from the discrete-time filter, wherein the discrete-time filter includes a plurality of current supply units generating a current having a size obtained by multiplying an input current by a determined gain, respectively, an adding unit adding currents supplied from the plurality of current supply units, and a plurality of controllers connecting the plurality of current supply units and the adding unit and controlling the flow of current supplied from the current supply units to the adding unit.
摘要:
A hybrid balun apparatus are disclosed. The hybrid balun apparatus can support both the reception mode and the transmission mode and be advantageous for a high level of integration, by replacing two transformers disposed at a reception path and a transmission path with a single transformer and integrating a T/R switch and a balun into a one chip. Therefore, an IC according to integration extends to a front stage of an antenna to facilitate interfacing between elements, and a burden for designing at a rear stage (i.e., LNA in the reception mode, and PA in the transmission mode) can be reduced.
摘要:
An embodiment of the present invention relates to a combined accelerometer and gyroscope system. The combined accelerometer and gyroscope system includes a combined accelerometer and gyroscope for maintaining vibration of a mass body at a constant amplitude using an applied drive voltage, and detecting vibration signals in directions of an acceleration axis and an angular velocity axis. An acceleration axis vibration signal obtainment unit obtains the vibration signal in the direction of the acceleration axis. An amplitude maintenance control unit outputs an acceleration axis vibration maintenance control signal using the vibration signal. An acceleration axis driving input unit receives a voltage signal from the amplitude maintenance control unit and applies the voltage signal to the combined accelerometer and gyroscope. An angular velocity axis vibration signal obtainment unit obtains the vibration signal in the direction of the angular velocity axis. A force balance control unit outputs an angular velocity axis vibration maintenance control signal using the vibration signal received from the angular velocity axis vibration signal obtainment unit. An angular velocity axis driving input unit receives a voltage signal received from the force balance control unit and applies the voltage signal to the combined accelerometer and gyroscope.