App description

RF amplifier calculator

Enter the value and click Calculate. The result will be displayed.

An RF amplifier is an electronic amplifier used to drive a low-power RF signal to a larger signal, typically used to drive a transmitter antenna.

The stability of the Rollei stability factor (K) is called John Rosette's stability in 1962 IRE and the linear twoports power gain is constant.

The true stability factor is one way to get a question about whether you have a problem or not. If K>1, then the device will unconditionally stabilize any combination of source impedance and load impedance. Devices with K<1 are potentially unstable and may have some combined source and load impedance.

One device that allows the maximum gain (MAG) is when the roller stability factor is greater than one. The maximum gain allowed is the highest expected yield, achieved from a conjugate matched amplifier.

The network is a two-series branch network connected to the free end to a pair of terminals; the connection point and one free end are connected to the other terminal. The downside with l-networks is that they have a fixed Q, which is a function of the ratio of the two impedances to the matching resistors. Q is important because it determines network bandwidth.

The purpose of the matching network is to calculate the required load and source impedance, and the resulting load and source impedance.

Usage example

Input data:

Impedance value: 100 ohms

Frequency: 40MHz

Power impedance: 30j

Load impedance: 50j

Power L matching network: low throughput

Load L matching network: low throughput

S parameter: Cartesian coordinates

S₁₁:45 45

S₁₂:50 60

S₂₁: 60 55

S₂₂:25 40

Click "Calculate" to output the data:

Roller stability factor: 933

Maximum gain allowed: 1.95e+3 gain

Maximum gain allowed: 32.9Db

Conjugate input reflection: -0.0185 -38.8 pole

Conjugate output reflection: 0.0137 206 pole

Input impedance: 97.6 -1.16J

Output impedance: 97.1 -2.25J

Power supply L matches network components:

Capacitance: 60.7PF

Inductance: 179NH

Q_S: 1.50

Load matching network component L:

Capacitor: 38.8PF

Inductance: 193NH

Q_L: 0.971

 

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