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I have been reading some documents about 5G IC manufacturers recently.
I found a problem It mentions that one PA output of a MIMO system will interfere with another MIMO antenna’s PA input and PA output This will reduce the EVM To solve this problem,
the manufacturer requires that each PA in...
Hello everyone, I am a rookie in RF, May I know how many metal shields are needed when using multiple PAMIDs in a 5G phone?
Some layout guides mention that each PAMID needs a metal shielding, but I saw some design doesn’t follow it.
Regarding the metal shielding of PAMID, my personal guess...
I have a question about the saturation of LNA versus frequency.
I couldn’t find the answer on Google, so I’m asking here for expert advice.
Suppose there is a LNA with a working frequency range of 1550MHz-1615MHz and a P1dB of -9dBm.
There is no SAW in front/behind of the LNA.
On that...
This information is very important to me.
I use ADS 2019!
I am bothered by the issues these weeks.
I looked at so many tutorial videos, but still cannot find an answer.
Thanks for your kind information
Therefore, It might be a bug of ADS?
After seeing your advice, I tried a lot today.
Yesterday I set the port at the L02_Gnd.art.
That is a wrong setting, so I reset the port to L01_Top.
Just as the following picture:
However, the same wrong message still occurs.
On the other hand, if I don't use the ""ground layer" function...
Dear ALL, I encouted a problem about seting the feed points in ADS 2019.
I know while I set a postive port on layer1 , I also need to set a negative port.
Then, I know we might use a new function of ADS2019 to set a ground layer to instead seting negative ports one by one.
This is my...
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