Signals & RF
Time constants, reactance, impedance, resonance, decibels and antenna lengths.
- Antenna Length Calculator Physical length for a dipole, vertical, loop or 5/8-wave antenna at any frequency, including the end-effect correction.
- Decibel Calculator (dB) Converts a gain or loss between a plain ratio and decibels, for power or for voltage.
- Impedance Calculator Magnitude and phase angle of a series RLC impedance, with the resistive and reactive parts separated.
- PCB Trace Width Calculator Minimum copper trace width for a given current and temperature rise, using the IPC-2221 formula, plus the resulting resistance and voltage drop.
- RC Circuit Calculator — Time Constant and Cutoff Time constant, charge and discharge times, and the cutoff frequency of a resistor–capacitor circuit.
- Reactance Calculator Inductive and capacitive reactance at a given frequency, and the frequency where they are equal.
- Resonant Frequency Calculator (LC) The resonant frequency of an inductor and capacitor, with the period and angular frequency.
- RL Circuit Calculator Time constant, current rise and fall, and cutoff frequency for a resistor–inductor circuit.
- RLC Circuit Calculator — Q Factor and Bandwidth Resonant frequency, Q factor, bandwidth and damping for a series RLC circuit.
- Signal-to-Noise Ratio Calculator Signal-to-noise ratio in decibels, with the effective number of bits and the Shannon channel capacity.
- Wavelength Calculator Converts between frequency and wavelength for radio waves, light and any other wave.