- 易迪拓培训,专注于微波、射频、天线设计工程师的培养
help to understand the results in ADS momentum
The results obtained from the 3D radiation pattern ( port impedance = 50 ohms; Exitation voltage = 1 volt):
gain= 8.66 dB
directivity = 9.78668 dB
Power radiated = 1.02986 mW.
Results obtained from the 2D radiation pattern:
efficiency = 77 %.
From the basics (like gain, directivity, efficiency relation,) i know, i could not relate them.
For instance
1. efficiency = (radiated power/ input power)
here, input power = 0.4 W ( as 60% power is reflected from the given 1 W)
total radiated power (got from the simulation)= 1.02986 mW.
=> efficiency = 0.257 %, which is contrast to 77 % (from simulation results)
2. wondering why gain is not in dBi.
HELP!
Thanks
anyone?
1V into 50 ohm - why do you think that source power is 1 Watt?
Gain is in dBi (dB over isotropic reference).
I think its not 1W!
As, input voltage = 1 V
s11=0.40 (40 percent power is reflected) at .922 MHz => net input voltage = 0.6V.
Input power = (Vsquare)/R = (0.6square)/50 = 7.2mW =>still efficiency is not 77%
correct me if i am wrong
thanks
Am still waiting......
If you think that the results are not consistent, contact Agilent support.
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