Limiting oscillation circuit

An oscillating circuit and amplitude limiting technology, applied in the field of information, can solve the problems affecting frequency stability, asymmetry, and large noise in the control loop, and achieve the effects of improving performance, good stability, and expanding the adjustable range.
CN106537767AActive Publication Date: 2017-03-22SHENZHEN GOODIX TECH CO LTD
8 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENZHEN GOODIX TECH CO LTD
Publication Date
2017-03-22

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention discloses a limiting oscillation circuit. (110) for generating an oscillation signal; a pulse width modulation circuit (120) for generating a pulse width modulation signal based on the amplitude of the oscillation signal; a low pass filter circuit (130) for generating a pulse width modulation signal, (140) for controlling the voltage-controlled resistance circuit (140) for controlling the voltage-controlled voltage signal based on the control of the DC-controlled voltage signal, and a voltage-controlled voltage signal (140) for controlling the voltage- The resistance value of the voltage-controlled resistance circuit (140) is changed to control the amplitude of the oscillation signal. The limiting oscillation circuit of the embodiment of the present invention can improve the performance of the limiter oscillation circuit.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to the field of information technology, and more specifically, to a limiter oscillation circuit. Background technique

[0002] If the common LC oscillating circuit has no amplitude limit, the amplitude of the oscillating circuit will eventually stabilize to the power supply voltage. Such an oscillating circuit has the following disadvantages: 1. The oscillation waveform of the oscillating circuit is distorted, and its rising and falling edges are asymmetrical. making the 1 / f of the oscillator circuit 3 The inflection point of the noise moves to high frequency, which leads to the deterioration of its low-frequency phase noise; 2. The large oscillation amplitude causes the current flowing through the inductor to be very large, which makes the magnetic core of the inductor saturated, resulting in a change in the inductance value, which ultimately affects the stability of the frequency .

[0003] The usual way to limit the a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More