阅读说明：本技术 一种提高信号输出功率的阻抗匹配电路 (Impedance matching circuit for improving signal output power ) 是由 张晓丹 于宁 刘涛 马小惠 于维平 陈霍兴 于 2020-08-04 设计创作，主要内容包括：本发明涉及一种提高信号输出功率的阻抗匹配电路,并联于信号发出设备与信号接收设备之间,包括电路供电电源,通过阻抗匹配导线并联于信号接收设备,所述电路供电电源两侧的阻抗匹配导线分别串联有电感线圈与场效应管；所述场效应管另一接口端连接有脉宽控制电路。本发明所述的一种提高信号输出功率的阻抗匹配电路,不仅能达到阻抗匹配的目的,降低能量的消耗,提高电路的可靠性,并且吸收多余的能量回馈到电源中,提高能量的利用率。(The invention relates to an impedance matching circuit for improving signal output power, which is connected in parallel between a signal sending device and a signal receiving device and comprises a circuit power supply, wherein the circuit power supply is connected in parallel with the signal receiving device through an impedance matching wire; and the other interface end of the field effect tube is connected with a pulse width control circuit. The impedance matching circuit for improving the signal output power can achieve the aim of impedance matching, reduce the energy consumption, improve the reliability of the circuit, absorb the redundant energy to feed back to the power supply and improve the utilization rate of the energy.)

1. An impedance matching circuit for increasing signal output power, connected in parallel between a signal emitting device and a signal receiving device, comprising: the circuit power supply is connected in parallel to the signal receiving equipment through impedance matching wires, and the impedance matching wires on two sides of the circuit power supply are respectively connected in series with an inductance coil and a field effect tube; and the other interface end of the field effect tube is connected with a pulse width control circuit.

2. An impedance matching circuit for increasing signal output power according to claim 1, wherein: the pulse width control circuit is connected to the grid of the field effect transistor.

3. An impedance matching circuit for increasing signal output power according to claim 2, wherein: the circuit supplies power and has a capacitor.

Technical Field

The invention relates to the field of impedance matching circuits, in particular to an impedance matching circuit for improving signal output power.

Background

In the circuit design process, when the impedance of the output signal is matched with the impedance of the power supply, the output power of the signal is the maximum, and at the moment, the output distance of the signal is the farthest. In the existing circuit design process, impedance matching is often performed by means of parallel resistors or extension lines, although the method can achieve the effect of circuit impedance matching, when current passes through the resistors or the extra extension lines, a part of energy is lost, and the unreliability of the circuit board is increased due to the heating of the resistors and the extension lines. Now, in order to make the output signal more stable, therefore, it is necessary for the signal to reach the maximum power output, and when the maximum power output is reached, the reflected wave of the signal can be reduced, so that the transmission is more reliable, in order to make the signal reach the maximum power output, it is necessary to ensure that the impedance of the signal matches the internal resistance of the power supply, and in order to ensure the above purpose, the prior art generally: the resistance load is connected in parallel, the line is adjusted, and the impedance of the line is increased by prolonging the line, so that the output impedance is improved. The resistance is increased or the impedance of the circuit is increased, so that energy loss is caused, extra heat is generated, the reliability of the circuit is reduced, and the power consumption of the power supply is increased.

Disclosure of Invention

The present invention provides an impedance matching circuit for improving signal output power, which can achieve the purpose of impedance matching, reduce energy consumption, improve circuit reliability, absorb redundant energy to feed back to a power supply, and improve energy utilization rate.

The technical scheme adopted by the invention for solving the technical problems is as follows: an impedance matching circuit for improving signal output power is connected in parallel between a signal sending device and a signal receiving device, and comprises a circuit power supply which is connected in parallel with the signal receiving device through an impedance matching wire, wherein the impedance matching wires on two sides of the circuit power supply are respectively connected in series with an inductance coil and a field effect transistor; and the other interface end of the field effect tube is connected with a pulse width control circuit.

Preferably, the pulse width control circuit is connected to a gate of the field effect transistor.

Preferably, the circuit supplies power and has a capacitor.

The invention has the beneficial effects that: an impedance matching circuit for improving signal output power can achieve the aim of impedance matching, reduce energy consumption, improve the reliability of the circuit, absorb redundant energy to feed back to a power supply, and improve the utilization rate of the energy.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic diagram of a circuit connection structure of an impedance matching circuit for improving signal output power according to the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.