What are the technical specifications of power dividers?

　　frequency range

　　This is the working premise of various RF/microwave circuits, and the design structure of power dividers is closely related to the operating frequency. The operating frequency of the distributor must be clearly defined before proceeding with the following design.

　　Enduring power

　　In high-power splitters/synthesizers, the maximum power that circuit components can withstand is the core indicator, which determines what form of transmission line can be used to achieve the design task. Generally, the order of power carrying capacity of transmission lines from small to large is microstrip line, strip line, coaxial line, air strip line, and air coaxial line. The choice of line to use depends on the design task.

　　Allocate losses

　　It refers to the amount of reduction in signal power compared to the original input signal after ideal power allocation. This value is a theoretical value, for example, 3dB for the second power division, 4.8dB for the third power division, and 6dB for the fourth power division. Due to the different impedances at the output terminals of the power divider, a network analyzer with port impedance matching should be used to measure the distribution loss that is close to the theoretical value

　　insertion loss

　　It refers to the reduction in signal power output after passing through the actual power divider compared to the original input signal, minus the actual value of distribution loss. (In some places, it also refers to the reduction in signal power output after passing through the actual power divider compared to the original input signal.). The range of insertion loss for a typical cavity is below 0.1dB; The microstrip varies depending on the power divider of the second, third, and fourth power dividers, with values of approximately 0.4~0.2dB, 0.5~0.3dB, and 0.7~0.4dB.

　　The calculation method of insertion loss: The loss from input terminal A to output terminals B, C, and D can be measured through a network analyzer. Assuming 3 power division is 5.3dB, then insertion loss=actual loss - theoretical allocation loss=5.3dB-4.8dB=0.5dB

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