simulation of LNA using HSPICE

[quote]hai

plz tell me how to simulate lna using hspice(or hspice RF)
how to get noise figure from hspice
can anyone tell me about the .LIN command in hspice RF

reply sooooooooooooooon
thanks

there is some RF examples included in hspice demo folder , check them

khouly

demo/ hspice-RF folder


tnx

Added after 5 minutes:

[quote="bcdeepak"]A real Good ink:

1. h**p://www.stanford.edu/class/ee133/spicedecks.html

Excerpt:
LNA.sp
2. h**p://www.stanford.edu/class/ee133/spice/lab3/LNA.sp

* -> t


tnx

hai

thanks for ur reply

i have visited the sites ,but the examples given there dont plot noise figure vs frequency
plz tell me how to plot noise figure

bye

check the documents of the hspice RF it show how to make the simulation of noise figure

khouly

i have gone through the hspice RF manual for lna design
there it is mentioned that .LIN command can plot noise figure without ac sources in the circuit
i simulated the ckt,but it is giving an error like "SET AC SOURCE IN THE CIRCUIT"
so applied an ac source
now it is giving an error that " INDUCTOR AND SOURCE ARE FORMING A LOOP"

what should i do?

send ur schematic , or netlist file ,so we can check

khouly

I'm designing a GSM LNA in 0.9 & 1.8GHz, and I need some sample hspice netlist ?

did u checked the examples . i am sure there is an LNA example there

khouly