2017年4月26日 · Because EIRP is the product of the transmitted power and the transmission antenna gain. In any practical transmitter BOTH magnitudes will be frequency dependent. However, the transmitter (power amp and antenna) may be designed to be wideband enough so as to ignore the frequency dependency over its entire operating bandwidth .

2021年8月11日 · If your Power Spectral Density is -0.3 dBm / MHz that's a real power of 0.5 milliwatts per MHz hence, if your bandwidth is 2000 MHz, that's a total permissible power of 1 watt across the whole width of the spectrum you are allowed to use.

2020年8月24日 · I've been introduced to the concept of equivalent isotropically radiated power (EIRP) and so far I've used it to calculate RF power density at distance of 100m radiated by a directional antenna with a gain of 20dBi at 10W output power. The EIRP is 60dBm (1kW) so using the inverse square law 1kW/4pi100^2 got me ~7.9mW/m^2.

2020年4月6日 · But I don't undersand why with 1KHz resolution bandwidth, in 1164~1240MHz, EIRP in dBm is -83.5. I would guess -75.3dBm-30dBm=-105.3dBm because 1KHz is just 1/1000 of 1MHz, and the total power in this bandwidth would be 30dB less.

2019年6月29日 · EIRP means Effective Incident Radiated Power .This figure takes into account the antenna system .If you had a strongly directional antenna with high gain you would not be able to run anything near 4W transmit .On the other had a poor antenna like say a loading coil on a bad ground would allow much more than 4W transmit .

2024年1月9日 · $$ EIRP_{dBmiC} = Gain_{Linear} + 10log_{10}(N) + P_{device} + 3 dB$$ Note: power in log. The equation above assumes the array gain is identical for both polarizations and they are perfectly 90 degrees out of phase. 3 dB comes from linear->circular polarization conversion. For a more rigorous equation, you must combine the EIRP components as ...

2017年1月2日 · Any kind of signal will gets focused the same, so if you give 23 dBm to it (200 mW), it will be 23+24, so the EIRP will be 47 dBm (50 W). EIRP just describes if we have an ideal isotropic antenna, which doesn't exist IRL, what amount of power does it need to transmit to reach the same power density as the aperture antenna that we use. \$\endgroup\$

2021年12月15日 · I am calculating the EIRP using FCC guidelines. I came across the formula in the FCC guidelines that has a denominator value of 30. That is, EIRP = (E x d)^2/30. Can anyone explain what 30 is and w...

2015年6月8日 · We know that the laws of our countries set the regulatory limits of EM radiated power based on the EIRP transmit power of the antennas of devices. However, the received incident power is more relevant in determining any malevolent effect on a human subject. The received power decreases as the distance from the Wifi transmitter increases.

2024年2月25日 · Considering the 3gpp guidelines, current EIRP is set to maximum of 23dBm, which is maintained by the baseband firmware. However in absence of 3gpp guidelines and no cap setup by baseband firmware, What would be the maximum EIRP if all the antennas were to transmit simultaneously? I have tried to look in PA circuit architecture, but no success.