What is matching resistance_the role of matching resistance

Electricity is indispensable for us in our lives, and we use electricity almost every day. Now there are more electrical appliances that use electricity, such as refrigerators, air conditioners, etc., so what keeps these circuits in balance? Now let’s talk about matching resistance, let’s take a look together.

What is matching resistance
Matching resistance is resistance, it is just called in specific circuits such as resonant circuit or radio frequency circuit.
There are matching capacitors, matching inductances and so on.

The role of matching resistance
The role of matching resistance is to stabilize the circuit and achieve the desired effect.

Why is the differential signal line matching resistance generally 22R?
The specific selection should be based on actual conditions, and the correct matching resistance should be equal to the line impedance. Reducing the matching resistance value can improve the anti-interference ability, but this is conditional.

Differential transmission is a signal transmission technology, which is different from the traditional practice of one signal wire and one ground wire. Differential transmission transmits signals on both wires. The two signals have the same amplitude and opposite phase. The signals transmitted on these two wires are differential signals.

Impedance matching
Impedance matching is mainly used on transmission lines to achieve the purpose of all high-frequency microwave signals can be transmitted to the load point, and there is almost no signal reflection back to the source point, thereby improving energy efficiency. The internal resistance of the signal source is equal to the characteristic impedance of the connected transmission line and has the same phase, or the characteristic impedance of the transmission line is equal to the impedance of the connected load and the same phase, respectively, it is called the input or output end of the transmission line is in impedance matching state, referred to as Impedance matching.
Through the above introduction, we have understood the relevant content of matching resistors. There are many types of resistors that can be matched. Only by matching reasonable resistors can a stable balance of the circuit be achieved.

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