Home > Online Calculation Tools > ERP/ERIP Calculator
Tools Category

 LED current limiting resistor calculation
 Triode bias voltage calculator
 Capacitance time constant calculator
 Triode switch saturation calculator
 Plate capacitance capacitance calculator
 Battery life calculation
 Charging time calculation of rechargeable battery
 Service life of lithium manganese rechargeable battery
 Application and selection calculator of voltage regulator diode
 LED circuit power calculator
 Working time calculation of ultracapacitor
 Polyester capacitor color code calculator
 FET Buffer Deviation Calculator

 5 color ring resistance value online calculator
 Fourring resistance online calculator
 Voltage regulator current limiting resistor calculator
 Parallel resistance calculator
 Resistance divider calculator
 Online capacitor series calculator
 On line calculation of resistance current and voltage
 Online power calculator

 Unit conversion of inductance
 Inductance parallel calculator
 Inductance inductance calculator
 Spiral coil inductance calculator
 Iron powder core toroidal core online calculator
 Iron powder core magnetic ring model specifications Daquan
 Ferrite magnetic ring online calculator
 Inductive and capacitive reactance online calculator
 Flux density calculator
 Multilayer Coil Inductance Value Design Calculator
 Single layer coil inductance calculation
 Air core inductance and Q value online calculator

 Wavelength and frequency relationship and conversion tools
 Jtype transmit antenna calculator
 Trap Antenna Design Calculator
 Electronic divider filter calculator
 W, dBW and dBm conversion online calculator
 V, dBV and dBuV conversion online calculator
 ERP/ERIP Calculator
 Voltage standing wave ratio loss calculator
 FM and TV channel frequency conversion tools
 Microstrip line characteristic impedance calculator
 Filter cutoff frequency online calculator
 Operational Amplifier Low Pass Filter Calculator
 Op amp high pass filter calculator
 Bandpass Filter Design Calculator
 OpAmp Op Amp Voltage Gain Calculator
 Chebyshev Pi LC HighPass Filter Calculator
 Chebyshev Pi LC Low Pass Filter Calculator
 Butterworth Pi LC HighPass Filter Calculator
 Butterworth Pi LC Low Pass Filter Calculator
 High frequency filter parameter calculator
 Active Speech Filter Online Calculator

 Calculator online calculation
 Length converter
 Fahrenheit and Celsius Temperature Converter
 Smart Advanced Calculator online use
 Multiple party / open n power calculator
 Square root / square root calculator
 Online cube root calculator
 Power unit converter
 Power, energy and heat converter
 KB and GB unit online convertor
 Area converter
 Frequency unit online conversion tool
 Trigonometric function online calculator
 Volume and capacity converter
 Online temperature converter
 Pressure convertor
 Weight converter
 Byte unit conversion
 Resistor unit on line converter
 Air volume converter

 555 Timing Circuit Calculator
 555 timer frequency calculation
 MSP430 microcontroller UART register
 Coherent sampling online calculator
 Constant Current Source Online Calculator
 555 monostable circuit parameter calculator
 Data conversion jitter calculator
 Wheatstone Bridge Calculator
 Hysteresis comparator calculator
 Differential amplifier calculator
 Real time clock (RTC) calculator
 LC circuit frequency online calculator
 RC circuit instantaneous voltage calculation
 Chip heat dissipation area calculation
 Phase locked loop VCO frequency calculator
 DCDC circuit online calculator
 RC time constant calculator
 Phaselocked loop filter
 Digital to Analog Converter Indicator Online Calculator
 Preamplifier design calculator
 MC34063 online calculator
 LM117/LM317 output voltage calculator
ERP/ERIP Calculator
Introduction to the meaning of EIRP/ERP
What is EIRP?
EIRP：Effective Isotropic Radiated Power.The EIRP power is the product of the power supplied by the radio transmitter to the antenna and the absolute gain of the antenna in a given direction. An ideal omnidirectional antenna with the same unity gain in all directions, typically used as a reference antenna for wireless communication systems. The EIRP power is defined as: EIRP = Pt * Gt, which represents the transmit power in the direction of the maximum antenna gain that can be obtained by the transmitter compared to the omnidirectional antenna. Pt represents the transmit power of the transmitter, and Gt represents the antenna gain of the transmit antenna. In wireless communication engineering, it is often used to measure the strength of interference and the ability of the transmitter to transmit strong signals.
ERP:Effective radiated power. The power supplied by the radio transmitter to the antenna and the gain of the antenna relative to the gain of the halfwave dipole in a given direction. In fact, the effective transmit power ERP is substituted for EIRP to represent the maximum transmit power compared to the halfwave dipole antenna. Note: The dipole antenna has a gain of 1.64 (2.15dB), so the ERP is 2.15dB lower than the EIRP.
dBm：Is a value of the absolute value of the test power, the formula is: 10lgP (power value / 1mw), for example, if the transmit power P is 1mw, converted to 0dBm after dBm.
dBi and dBd: dBi and dBd are the values of the gain (power gain), both of which are relative values, but the reference is not the same. The reference reference for dBi is an omnidirectional antenna, and the reference for dBd is a dipole, so the two are slightly different. It is generally considered that the same gain is expressed by dBi, which is larger than that expressed by dBd. [Example 3] For an antenna with a gain of 16 dBd, when the gain is converted into dBi, it is 18.15 dBi (the decimal place is generally ignored, 18 dBi). [Example 4] 0 dBd = 2.15 dBi. [Example 5] The GSM900 antenna gain can be 13dBd (15dBi), and the GSM1800 antenna gain can be 15dBd (17dBi).