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my noise figure is N8975A,its maximum frequency is only 26.5GHz , so i need a blockdown converter ,agilent has some converter can achieve the request ,but it is so expensive ,so i want to find some block converter which price small than $5000 ,can you give me some advise .thanks
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IN my lab ,there is a PNA N5247 without options 029, if i want to measure the NF ,i must buy options 029,but i have found that the options 029 is too expensive to me .so i must find other method to measure the noise figure ,there is a N8975A in my lab too, but its maximum frequency is 26.5G ,so...
i have found that the options 029 is too expensive to me .so i must find other method to measure the noise figure ,there is a N8975A in my lab , but its maximum frequency is 26.5G ,so i must add blockdown converter ,N8975AZ-K40/K50 is a blockdown converter for N8975A by agilent ,but it is also...
i have design a 45GHz low noise amplifier ,we have a PNA N5247A ，what else instrument should i buy when i want to measure the noise figure of the LNA ,thanks
In my layout ,i plan to use three layer(metal1 . metal2 . metal3) as the DC layer(GND . VDD. Vgs ) ,but i am not sure which one as the GND layer and which one as the VDD. which one as the Vgs layer . thanks
i design a LNA with single output , but now i want to connect it with mixer , the mixer is a differential input , so i must convert single output at LNA to differential ! i know a balun can achieve this ,and are there any other method to achieve the convert ....thanks[/SIZE]
there are many small softwall to calculate match network with smithchart , i use "Smith V2.00", it is very convenient , and i calculate for you , the Drain inductor is 1.79nH, and series capacitor is 420f F ,thanks
i think it determined by two factor .first:the voltage gain at this frequency should be the maximum. second:you need achieve match at you intereted frequency. I think you can add a very big inductor at drain(10nH),and then measure the ouput impedance, then use a software like ADS to find the...
Thanks , now ,i design a buffer and then follow balun to achieve the convert ,but i don't know how to achieve this only by a buffer ,BigBoss, can you send my some papers about how to use a buffer to conver diff.sinal to single ended without balun ?
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This circuit works at...
Hi Guys :
I design a LNA with a differential output , but when tapeout , i want to measure the LNA individually ,so i want to convert the output node into a single output , but i don't want to use a balun ,i want use a circuit to achieve the convert . Anyone has some advise for...
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