ElectromagnetismΒΆ
Electromagnetism is a fundamental interaction that occurs between particles with electric charge via electromagnetic fields. Electromagnetism can be thought of as a combination of electrostatics and magnetism, which are distinct but closely intertwined phenomena.
Contents:
- Circuits
- Couplers
- Attenuation of three link microwave attenuator
- Admittance of rectangular loop coupler
- Total gain of transistor amplifier
- Impedance of Wilkinson microstrip divider
- Section length of multistage transformer
- Relative operating bandwidth of quarter-wave transformer
- Resistor resistance in Wilkinson divider
- Transient attenuation of separate loop coupler with cascade connection
- Wave impedance of even mode of Lange coupler
- Wave impedance of odd mode of Lange coupler
- Wave impedance of Lange coupler
- Diodes
- Current from voltage and diode constant in vacuum diode
- Current from voltage and triode constant in vacuum triode
- Diode constant for parallel-plane vacuum diode
- Diode constant of cylindrical diode
- Direct permeability coefficient of triode with flat electrodes
- Internal resistance of vacuum diode
- Limit operating frequency of vacuum diode
- Charge density in diode
- Steepness of volt-ampere characteristic of vacuum diode
- Voltage of equivalent diode for pentode
- Equivalent diode voltage for tetrode
- Equivalent diode voltage for triode
- Filters
- Transmission coefficient approximation of low-pass filter
- Band pass Chebyshev filter order from distortion and frequency
- Butterworth filter order from distortion and frequency
- Filter order from distortion and frequency
- High pass Chebyshev filter from distortion and frequency
- Low-pass Chebyshev filter order from distortion and frequencies
- Resonators
- Coupling parameter of resonator from quality factor
- Coupling parameter of resonator from resistance
- Instantaneous energy of resonator
- Quality factor of loaded resonator from circuit parameters
- Quality resonator of loaded resonator from quality factors
- Quality factor of resonator
- Quality factor of empty rectangular resonator for traverse electric waves
- Quality factor of filled rectangular resonator
- Resonant frequency of rectangular resonator
- Resonant frequency of ring resonator
- Transmission lines
- Coplanar lines
- Effective permittivity of coplanar transmission line when distance is greater than thickness
- Effective permittivity of coplanar transmission line when distance is less than thickness
- Wave impedance of coplanar line when hyperbolic sine ratio squared is between \(0\) and \(\frac{1}{2}\)
- Wave impedance of coplanar line when length to distance ratio squared is between \(\frac{1}{2}\) and \(1\)
- Microstrip lines
- Attenuation coefficient in dielectric substate of microstrip line
- Attenuation coefficient in metal of microstrip line when width is greater than thickness
- Attenuation coefficient in microstrip metal when thickness is greater than width times \(2 \pi\)
- Attenuation coefficient in microstrip metal when thickness is less than width times \(2 \pi\)
- Effective permittivity of microstrip line when width is greater than thickness
- Effective permittivity of microstrip line when width is less than thickness
- Effective permittivity of microstrip line from frequency
- Effective width of microstrip line when width is greater than thickness
- Effective width of microstrip line when width is less than thickness
- Inductance of microstrip line strip
- Resistance of microstrip line
- Short circuit inductance of microstrip line
- Surge impedance of microstrip line from frequency
- Standing wave ratio from reflection coefficient
- Standing wave ratio from voltage
- Hybrid parameters matrix equation
- Impedances of Ο-type circuit of transmission line
- Impedances of T-type circuit of transmission line
- Input impedance from transmission matrix
- Input impedance of lossless transmission line
- Input impedance of lossy transmission line
- Reflection coefficient from ratio of average power to incident power
- Standing wave ratio from ratio of average power to incident power
- Reflection coefficient from load and surge impedance
- Scattering matrix equation
- Scattering matrix to transmission matrix
- Admittance matrix equation
- Impedance matrix equation
- Transmission matrix equation
- Transmission matrix for parallel load in line
- Transmission matrix for serial load in line
- Transmission matrix of lossless transmission line
- Transmission matrix of lossy transmission line
- Transmission matrix of Ο-type matrix
- Transmission matrix of T-type circuit
- Surge impedance of microstrip line when effective width is greater than substrate thickness
- Surge impedance of microstrip line when effective width is less than substrate thickness
- Coplanar lines
- Waveguides
- Attenuation coefficient in dielectric
- Attenuation coefficient in dielectric in rectangular waveguide
- Attenuation coefficient in metal
- Attenuation coefficient in metal in rectangular waveguide for transverse electric waves
- Attenuation coefficient in metal in rectangular waveguide for transverse magnetic waves
- Wave impedance in rectangular waveguide for transverse electric waves
- Characteristic resitance of rectangular waveguide for transverse magnetic waves
- Critical wavelength in rectangular waveguide
- Group speed of wave in rectangular waveguide
- Maximum electric field strength of main wave in rectangular waveguide
- Maximum voltage in coaxial line
- Phase speed of wave in rectangular waveguide
- Power carried by coaxial waveguide
- Power carried by main wave of rectangular waveguide
- Specific capacitance of coaxial waveguide
- Specific conductivity of coaxial waveguide
- Specific inductance of coaxial waveguide
- Specific resistance of coaxial waveguide
- Surface resistance of metal
- Wave resistance of coaxial waveguide
- Wavelength in rectangular waveguide
- Admittance in parallel connection
- Capacitance in parallel connection
- Capacitance is proportional to plate area
- Capacitance of spherical capacitor
- Capacitor impedance from capacitance and frequency
- Capacitor impedance from capacitor reactance
- Coil impedance from inductive reactance
- Coil impedance via inductance and frequency
- Energy stored in capacitor via capacitance and voltage
- Energy stored in inductor via inductance and current
- Impedance in serial connection
- Impedance module of serial resistor-coil-capacitor circuit
- Inductance in serial connection
- Input impedance of thin film resistor
- Oscillation period of inductor-capacitor network
- Resistivity of serial resistors
- Sum of currents through junction is zero
- Sum of voltages in loop is zero
- Time constant of resistor-capacitor circuit
- Capacitance of p-n varactor junction
- Voltage across charging capacitor in serial resistor-capacitor circuit
- Couplers
- Maxwell equations
- Electromagnetism (Vector)
- Absolute permittivity via relative permittivity
- Admittance is conductance and susceptance
- Capacitance from charge and voltage
- Wave impedance from permeability and permittivity
- Charge is quantized
- Corona discharge current from voltage
- Current is voltage over resistance
- Electric charge is constant in isolated system
- Electric dipole moment is charge times distance
- Electric displacement is permittivity times electric field
- Electric field due to dipole
- Electric field due to point charge
- Electric field is force over test charge
- Electric field of uniformly charged plane
- Electric field outside charged sphere
- Electric flux through closed surface via total charge
- Electric field in gas gap between two electrodes
- Electromotive force induced in moving contour
- Electromotive force induced in rotating rod
- Electromotive force induced in rotating coil
- Electrostatic force via charges and distance
- Electrostatic potential due to point charge
- Electrostatic potential energy of two charges via distance
- Electrostatic potential is work to bring from reference point over charge
- Energy density via permittivity and electric field
- Energy of magnetic field of coil
- Energy via constant power and time
- Force between parallel wires
- Inductance is magnetic flux over current
- Inductance is proportional to turn count
- Inductance via number of turns and coil volume
- Instantaneous energy of electric field
- Magnetic field due to infinite wire
- Magnetic field of coil
- Magnetic flux from magnetic flux density and area
- Magnetic flux density from magnetic field strength
- Magnetic flux density of linear conductor of finite length
- Magnetic moment via current and contour area
- Period of rotation of charged particle in magnetic field
- Power factor is real power over apparent power
- Power via current and resistance
- Power via voltage and current
- Power via voltage and resistance
- Radius of curvature of charged particle in magnetic field
- Resistance via resistivity and dimensions
- Self-induced electromotive force via time derivative of current
- Voltage is electric field times distance
- Voltage is line integral of electric field