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18th February 2020, 01:59 #1
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Two tone nonlinear simulation in ADS
In twotone nonlinear simulation. How much should be Fspacing? And also is it RF frequency should be the centre frequency?
Note: my target frequency band 3.43.6 GHz. thanks

18th February 2020, 03:27 #2
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Re: Two tone nonlinear simulation in ADS
Hi,
I'm no HF specialist, but afaik Fspacing depends on the input (data) frequency.
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18th February 2020, 04:13 #3
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Re: Two tone nonlinear simulation in ADS
Set all frequencies inside bandwidth of DUT.
Where all frequencies mean f1, f2, 2*f1f2, 2*f2f1.
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18th February 2020, 04:52 #4
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18th February 2020, 07:52 #5
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Re: Two tone nonlinear simulation in ADS
Show me lower and upper frequencies for 1dB bandwidth of your DUT.
What analysis method do you use ?

18th February 2020, 13:21 #6
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18th February 2020, 13:55 #7
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Re: Two tone nonlinear simulation in ADS
What analysis do you use ?
HB or Tran ?
f0=(3.4GHz+3.6GHz)/2=3.5GHz
BW=0.2GHz, BW/3=0.0666GHz
I choose delta_f=50MHz < BW/3
(1) standard case
f1=f0delta_f/2
f2=f0+delta_f/2
(2) allevitated case
f2=f0delta_f
f1=f2delta_f
or
f1=f0+delta_f
f2=f1+delta_fLast edited by pancho_hideboo; 18th February 2020 at 14:17.
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18th February 2020, 14:40 #8
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18th February 2020, 14:56 #9

18th February 2020, 15:04 #10
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18th February 2020, 15:10 #11
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Re: Two tone nonlinear simulation in ADS
You have to apply modulated signal for evaluation of ACLR, use envelope analysis which is time variable HB.
Last edited by pancho_hideboo; 18th February 2020 at 15:20.
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18th February 2020, 15:17 #12
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18th February 2020, 15:17 #13
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Re: Two tone nonlinear simulation in ADS
See https://designersguide.org/forum/Ya...1264078706/4#4
http://www.designersguide.org/Forum...1190971685/7#7
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