budget analysis in ads

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

Thanks khouly.
you mean to say I should consider only one path! is there any alternative of his actually i am getting error in defining second budget_path.

vivek

the second path is the same as the 1st , but the received power is divided to enter the 2 paths , so u can replace them with one path

khouly

[quote="khouly"]the second path is the same as the 1st , but the received power is divided to enter the 2 paths , so u can replace them with one path
Thanks Khouly
could you tell me how to calculate Image rejection ?it should be from I path or Q path.I am using tone of 2.44GHz for source,2.24GHz for Ist LO and 199MHz for second LO.and how to calculate IIIP3

the Image rejection ratio : ratio between the gain of the desired channel to the gain of the image signal

is ur IQ paths after the 1st mixer , then calculate the power before the I and Q spliting , of both desried and image signals

check the image

khouly

Thanks Khouly for help.
But my problem is different in my case image rejection will be done after the I-Q splitting .Here I am attaching image pls check it and suggest me.
I Have one more problem in calculating NF, NFdeg, Gain using AC analysis is that while considering only one path what shoul I do with power splitter?f I keep it at same plca then what about its third port

the image rejection ratio can be calculated after the power combining , just before the BPF

i see ur using one of image rejection achitectures

about the noise figure and IIP3 , check the RF system design guide , and try to build ur own equations

specially ur architecture need alot of work to be created that way

khouly

Use equations to to RF cascaded budget analysis

he can use the budget simulation in ADS , he need to use equations and AC and HB enginers

khouly

Khouly,
can you explain me what is ".t1",and ".t2" in equation format for the equation like
budget_path=["port1.t1","a1_amp.t2".................etc]

send me , the project , u created , so i can check the equations

or tell me the steps , to create such a project

khouly

hello khouly,
can you send me your Email ID?

vivek

hello ,
now my problem has been solved.
can some one provide me RF design specification of bluetooth i am not able to get from bluetooth .org
thanks
vivek

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