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dipole.hfss
that is because the efficiency of short dipole is very low witch depends on it's short length(l/lambda). that is why the gain of a short dipole is very low even though the matching network is perfrct. but i think your approch is not the rigth one. because for a short dipole (and...
e is the efficiency of the antenna; E=(Rr./(Rr+Rd));
Rr= Radiation Restance
Rd=disspation Resistance
Rr is calculated by: (Rr=Vin./Iin)
The FR4 is specially for the low frequencis applications and for the higher frequencies it's loss becomes dominant. it can be used up to 1-1.5GHz. for the...
the genaral relation as you know is "G=e.(2*pi/lambda).Ae". "e" is the efficiency of the antenna and "Ae" for microstrip patch is the physical surface of the patch. "e" depends on the input impedance and input impedance depends on the feed point. i don't know any link for HFSS but I can upload...
RF layout in ADS
thanks for your answers but i also need to know that if the back side ground plane in all cases is necessary or not. because of my special application, i need to use the other side for placing the elements and microstrip lines so i can't definea back-Ground plane.Is this a...
RF layout in ADS
Hi
I want to draw a preamplifier layot in ADS. i want to know the special rules for RF layout design in(20MHz up to 2 GHz). in this frequency range the GNDvias are needed or not and if yes where should i insert them?
and in ADS how i can change an orbitaray metal shape to a...
hi
in general case there is not any theorical formula for that but for rectangular and triangular structures there are some formulas that you can easily find in every "Antenna" book and i sugest you the Antenna dook by "baul". you can find anything you want to know about micristrip patch...
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