In wireless communication systems, it is often necessary to calculate multiple antenna output signals based on building structures. In such cases, bidirectional radio power dividers play a crucial role.
A power divider is a device that can split the energy of a single input signal into two or more equal or unequal energy paths; it can also combine the energy of multiple signals into a single output, in which case it is also referred to as a combiner. The output ports of a power divider should maintain a certain degree of isolation. Based on the number of output ports, power dividers are typically classified as 1:2, 1:3, etc. Their primary technical parameters include power loss (including insertion loss, distribution loss, and reflection loss), voltage standing wave ratio (VSWR) at each port, isolation between power distribution ports, amplitude balance, phase balance, power capacity, and bandwidth, among others.
Function: Power dividers are used to distribute signals in a two-way radio system according to a specific ratio.
A power divider is a device that splits a single RF input signal into two equal-power outputs, with a certain level of isolation required between the output ports.
Technical specifications include: frequency range, power handling capability, distribution loss from the main path to the branch paths, insertion loss between input and output, isolation between branch ports, and voltage standing wave ratio (VSWR) at each port.
Functions of power dividers
A. Frequency range: This is a prerequisite for all RF/microwave circuits, and the structural design of the power divider is closely related to the operating frequency.
B. Power handling capability: The maximum power that the device and circuit components can withstand, which is a core metric determining the type of transmission line used to achieve the design objectives.
C. Coupling loss: The power loss from the main path to the branch paths, which is inherently related to the specifications of the power divider.
D. Insertion loss: Losses between the input and output caused by imperfect transmission line media or conductors.
E. Isolation: The isolation between branch ports is one of the key performance indicators of a coupling divider.
F. VSWR: The lower the voltage standing wave ratio (VSWR) at each port, the better.