I am facing problem in matching the input port of HMC406 to 50 ohm at 5.6 GHz.
Are you using our EVB or a PCB of your own design?
Please describe the problem in greater detail.
I am using my own PCB.. In the datasheet it is written that it is already matched to 50ohm. if I am using my own PCB i need to match the input and ouput using the s parameter file of the HMC406. RIGHT??
and what about the baising the IC? How I will be baising the IC in the ADS to the different pins of the IC?
can you please share a link or procedure so that i can go through it?
Judging by the data sheet plot of Broadband Gain & Return Loss, at 5.6 GHz you should see an S11 that is typically less than -10 dB. The Pin Descriptions section says that RFIN is "matched to 50 Ohms"...which can be considered correct for the specified operating frequency range of the part, but not outside of the operating frequency range. I've reviewed the .s2p file posted to the website and found that it shows the response below...which obviously make no sense at all!
Because the above makes no sense when compared to the data sheet, I opened the .s2p file in a text editor and compared it to the official .s2p file format. By doing so I found that, per the official .s2p file format, the header is not even present (it's in a "comment" row).
Once I corrected the header problem described above, I obtained the result below...which makes much more sense when compared to the response showed on the data sheet:
Please try the attached, "fixed" .s2p file and then let me know if the results you obtain make more sense.
Within the operating frequency range, you should be able to present 50 ohms to the part's input and obtain return loss numbers similar to those shown on the data sheet.
We have no particular procedure for biasing the part in specific simulation environments.
In any environment (including live biasing in the lab...where real smoke can occur!), if you are using the data sheet's nominal Vdd=5.0 Vdc then, to obtain the maximum Pout, you should set Vpd to the same voltage as Vdd (as described below from the data sheet's Pin Descriptions table). For lower idle drain current and lower Pout, you can reduce Vpd to a voltage lower than Vdd.
Try that and let me know if you have additional questions.
Thank you. Now its fine
Retrieving data ...