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28 Threads found on Calculate iip3
hi i hope :the sentence is correct:?: i cant calculate iip3 for lna with ads?:sad: pleas help me
How I can calculate iip3 & noise figure & 1dB com. with Aplac I designed gilbert cell mixer with mosfet (BSIM3 model) and i want to quickly compute main parameter of mixer with aplac v7.6. any one can help me?
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 (...)
calculate it , or simulate , it if u want to calculate it , check the book of the razavi , RF microelectronics , it is very good khouly
can u explain more than? i cant calculate iip3 with this formula:ip_3=ip_3(vout,ssG,.....):-( thaaaaaaaaaaaaanks
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.
i have this circuit in ADS and i want to calculate iip3 . can anybody help me?
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
First of all I don’t know what MWJ article you are talking about. This is a standard RF systems formula. Second, you have to follow the WCDMA spec for levels, spacing, etc. Third, seems that you are looking to calculate the LNA iip3 not Receiver iip3. They are different things.
As your circuit is characterized by voltage (and not power) gain, be sure you appy and measure correct sources and loads. A common practice is to talk about equivalent power levels. for example you can express the input voltage as equivalent power to 50 Ohm load. To do so, take the 50 Ohm source and connect to 50 Ohm resistor. Take the input volt
One point that people miss while following those tutorials is that port instance at ouptput and input. They should be given a proper source resistnace, according to your circuit. Dont follow blindly the same procedure if you are designing with CMOS as the given examples are with Bipolar transistor. calculate appropriately your input and output
Hello all, I am trying to get the receiver specs for a mobile WiMax tranceiver, in the standard, the only indication i found to receiver nonlinearity is given by the "adjacent and nonadjacent rejection at BER=10e-6 for 3 dB degradation C/I" numbers. I really don't understand the term "for 3 dB degradation C/I"?, the standard doesn't give any de
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,
For a circuit whose input impedance is high, how to simulate its iip3, gain, NF so that I can use these parameters to calculate the iip3, gain, NF of the overall cascade chain?
I've never used 0.35 Thus I do not know exactly You'd better calculate it yourself. Bosco Leung's book on microwave VLSI circuit design would be helpful. thankyou! I guess there maybe some optimum value for iip3-NF under certain current . Is it possible to achieve iip3 around 10dBm NF<15dB current tail<1mA 2G downconverti
The Cascade calculation formula of Gain/NF/OP1dB/OIP3 can use Cascade or the tool I developed[/URL
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
Greetings Reader, I am simulating an amplifier (A simple one) The amp is merely a differential pair with a tail current source and resistive load. Differential Input Differential output. I placed 2 ports at the Gates of the Pair - each of them having first and second sinusoid amplitude set to pin in dBm and swept pin in a swept PSS analysis
hi all,how i calculate IP3in and IP3out in ads2003 regards
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
1. You can have your small-signal excitation input in the "pacmag" parameters of vsin source. If you have more then one input excitation, the output is just the linear combination of the response by these many excitation by superposition. 2. The pac analysis will include frequency conversion effect, i.e. you can calculate the gain from one side
But since other blocks like LNA use power gain, how to calculate gain, NF, iip3, P1dB... with power gain and voltage gain directly? If can not, it is no point to use db for voltage. Am I correct?
Hi. HSpice is not a very good choice for RF applications. However, there are some ways to calculate those parameters. by .DC analysis, HSpice will automatically declare dc power consumption but for ac power consumption you should use integral operator and its not a very easy way. for Noise Figure, by using .noise statement HSpice will report input
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.
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
dear all i have some questions about RF mixer. 1. We can find the conversion gain for mixer by using a. voltage gain b. power gain c. S21 parameter ( forward gain versus frequency) Actually what is the differrence from these three gain? 2. To find linearity of the mixer, normally we calculate the iip3. We will set two-tone frequeny,
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.
Hi, I read the following link on IP3 calculation: There are three stages (stage 1 and stage 3 are amp while stage 2 is bandpass filter) which has the OIP3 and gain respectively: OIP3 +21dBm(125.9) inf dBm(inf) +25 dBm(316.2) Gain 15 dB (31.62) -3 dB