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15 Threads found on edaboard.com: **Calculate iip3**

Hi,
Can anyone help me in calculating IIP2 and **iip3** for LNA using ADS. What are the equations used to **calculate** those.
Thank you

RF, Microwave, Antennas and Optics :: 02-28-2015 02:44 :: LakshmiJL :: Replies: **1** :: Views: **173**

Hello,
With the use of a spectrum analyser i am getting a power spectral density across the frequencies of concern (gsm channels). For f1 and f2 (2 gsm channels) i know their powers and i am then trying to **calculate** the power of any possible imps using the formula
IM3_1=2P1+P2-**iip3**
IM3_2=2P2+P1-**iip3**
where is (...)

Digital communication :: 01-24-2014 03:30 :: leonardo232 :: Replies: **0** :: Views: **249**

hi all
i am simulating zero -IF receiver for wimax.
i want to **calculate** 1 dB compression point but in HB it is not allowing 0 Hz as output frequency.
and for 3 mixer tones what is the **iip3** equation
pls help
thanks

RF, Microwave, Antennas and Optics :: 02-27-2012 06:51 :: dishasoni :: Replies: **1** :: Views: **414**

hi all
i want to **calculate** **iip3** in ADs. I have 2 inputs LO and Rf freq for zero if receiver for wimax .the centre freq is 5.20 GHz.what will be the indices and equation required to **calculate** **iip3**
pls help

Analog IC Design and Layout :: 02-25-2012 06:24 :: dishasoni :: Replies: **0** :: Views: **620**

Dear all:
The switched capacitor integrator is as following. how to test the linearity of the integrator? I am considering to do it in following way.
1) Input is a pure sin wave, the do pss+pac, then **calculate** the **iip3**
2) input is a pure sin wave, the output is a stair-case sin wave, then sample the output and do DFT the watch the HD3.

Analog Circuit Design :: 08-13-2011 00:07 :: sharezhao :: Replies: **5** :: Views: **711**

The Cascade calculation formula of Gain/NF/OP1dB/OIP3 can use Cascade or the tool I developed[/URL

Analog Circuit Design :: 09-28-2011 09:39 :: David.D :: Replies: **1** :: Views: **674**

hi
i hope :the sentence is correct:?:
i cant **calculate** **iip3** for lna with ads?:sad:
pleas help me

Analog IC Design and Layout :: 11-08-2010 05:06 :: nooshiin :: Replies: **5** :: Views: **1245**

i have this circuit in ADS and i want to **calculate** **iip3** .
can anybody help me?

RF, Microwave, Antennas and Optics :: 02-27-2010 06:53 :: alizadeharand :: Replies: **11** :: Views: **2233**

Write your **iip3** equation in the outputs menu and then make your simulations by changing bias current utilizing parametric simulation.So, when you change bias current, for each step PSS+PAC will **calculate** **iip3** and you'll obtain **iip3** vs bias current curve.

RF, Microwave, Antennas and Optics :: 11-10-2009 08:06 :: BigBoss :: Replies: **2** :: Views: **814**

i think u can replace the Iand Q with single path
just to **calculate** the total NF , gain , and **iip3**
then apply the result to I and Q
khouly

RF, Microwave, Antennas and Optics :: 02-04-2008 02:40 :: khouly :: Replies: **13** :: Views: **1980**

RF, Microwave, Antennas and Optics :: 12-09-2007 07:19 :: khouly :: Replies: **3** :: Views: **2612**

Dear all,
I know the expression of
P_**iip3**=(3P_in-P_im,in)/2;
it leads to
P_in=(2P_**iip3**+P_im,in)/3,
to get P_in,max, let P_im,in=F (noise floor).
P_in,max=(2P_**iip3**+F)/3.
There are two variables in equation, P_in,max and P_**iip3**.
In RF system design, which one should be (...)

RF, Microwave, Antennas and Optics :: 06-08-2007 21:52 :: fxxjssc :: Replies: **1** :: Views: **6618**

I need **iip3** of front-end for designing a 5 GHz Mixer in 802.16a. How I can **calculate** the value of the power of the input interferer,

RF, Microwave, Antennas and Optics :: 01-05-2007 19:03 :: rosaeidi :: Replies: **2** :: Views: **1889**

If you had obtain the Intermodulation Intercept Point, Noise Figure and Gain/Loss of the various analog block within your design then from which you can then **calculate** the overall system noise figure and **iip3**.
You could find the detail calculation example in Razzavi's RF IC Design.

Analog Circuit Design :: 05-08-2006 00:43 :: wchu01 :: Replies: **1** :: Views: **709**

Because it lacks for display function like NF, **iip3** and 1dB point, another fatal problem is that it can't show data on smith map. You still can write your own equations to compute these parameters but its not intuitive.
For linearity analysis, most people use FFT to **calculate** the 3rd order or 2nd order IM term. But it needs a long time to do a

RF, Microwave, Antennas and Optics :: 12-12-2004 00:37 :: dsjomo :: Replies: **2** :: Views: **709**

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