What is an impedance transformer?

When we use a power amplifier, signal source, and oscilloscope for load testing, one thing we need to pay attention to when setting parameters is that the signal source and power amplifier need to be impedance matched. In order to meet this requirement, we need to use the impedance matching circuit inside the power amplifier. If there are special requirements, we need to make a separate impedance converter. So what is a impedance converter? What role does it play in power amplifier testing? Today Aigtek Antai Electronics will reveal the secrets for you!

Yang impedance converter is a common type of signal conversion device in circuits. Its main function is to convert the input Yang impedance of one circuit into the output Yang impedance of another circuit, in order to achieve matching and signal transmission between different circuits.

1. Working principle of impedance converter

The basic principle of impedance transformer is to perform impedance transformation on the input and output signals according to the impedance matching theorem, so as to achieve maximum power transfer between the input and output signals. By inserting one or more transmission segments between two transmission lines that need to be matched, the transformation between different impedances can be achieved, thereby obtaining good matching and improving transmission efficiency. Impedance transformers can change the size and properties of impedance, typically consisting of one or several transmission lines with different characteristic impedances.

Impedance converters can adopt various circuit forms, such as series, parallel, and inverting types. In circuits, different impedance transformation functions are usually achieved by adjusting component values or adjusting operating states.

2. Classification of Impedance Transformers

According to the circuit form and working principle, impedance converters can be divided into various types, such as common source/common drain amplifiers

Complementary common source/common drain amplifier

Common cathode/common base amplifier

Resonant circuit

3. Application of Impedance Transformer

Impedance converters are widely used in various circuits, such as:

Signal transmission and matching of RF transceiver system

Impedance matching in audio amplifiers

Frequency response adjustment in signal generator and filter, signal conversion in sensor circuit, power transfer in power management circuit

Power supply:+ 5V

Bandwidth: 1GHz~3GHz

Output power: 1W

Maximum input power:- 10dBm

Gain: 46dB@2.4GHZ

Application: Ultrasonic atomization, non-destructive testing, diode testing, ultrasonic processing, antenna driving, focused ultrasound, electro-optic modulation Xi'an Antai Electronics is a high-tech enterprise specializing in the research and development, production, and sales of electronic measuring instruments such as power amplifiers, high-voltage amplifiers, power amplifier modules, power signal sources, RF power amplifiers, pre miniature signal amplifiers, high-precision voltage sources, high-precision current sources, etc., providing users with competitive testing solutions.