Home
Back
G21 Parameter Formula:
| From: | To: |
The G21 parameter, also known as the open circuit voltage ratio, is a two-port network parameter that represents the forward voltage gain when the output port is open-circuited. It is calculated as the ratio of Z21 parameter (forward transfer impedance) to Z11 parameter (driving point impedance at port 1).
The calculator uses the formula:
Where:
Explanation: This formula calculates the voltage gain from port 1 to port 2 when the output port is open-circuited, using the impedance parameters of the two-port network.
Details: The G21 parameter is crucial in network analysis for determining voltage gain characteristics in electronic circuits, particularly in amplifier design and signal processing applications where open-circuit conditions are considered.
Tips: Enter Z21 and Z11 parameters in Ohms. Both values must be positive and non-zero for accurate calculation.
Q1: What does G21 parameter represent?
A: G21 parameter represents the open circuit voltage ratio, which is the voltage gain from port 1 to port 2 when the output port is open-circuited.
Q2: When is this parameter typically used?
A: This parameter is commonly used in two-port network analysis, particularly in RF circuit design, amplifier characterization, and filter design.
Q3: What are typical values for G21 parameter?
A: The value can vary widely depending on the circuit. For passive networks, it's typically less than 1, while for active circuits like amplifiers, it can be greater than 1.
Q4: How does G21 relate to other network parameters?
A: G21 is part of the G-parameter set (inverse hybrid parameters) and can be converted to other parameter sets like S, Y, or H parameters using appropriate conversion formulas.
Q5: What are the limitations of this calculation?
A: This calculation assumes linear, time-invariant networks and may not be accurate for non-linear circuits or circuits with significant parasitic elements at high frequencies.