ifelix
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edge input impedance hfss
Hi,
I've a problem that I've to solve as soon as possible.
I've modeled a printed antenna without ground plane which is feeded by a microstrip line grounded. The ground plane ends some space before the antenna edge so this antenna couldn't be considered a patch...moreover the last part of the feeding strip is not grounded...
The antenna should have a resonance near 400MHz and the feeding line has been studied to have a characteristic impedance of 50 Ohm.
How can I know the input impedance of the antenna?
I've measured the input impedance Z11 at the wave port. How can I extract the real input impedance of the antenna? I know approximately it's value by means of an article about this kind of antenna and I want to know the antenna impedance so I can realize an adequate matching network.
Problem...I've measured S11 at the port for varying lengths of the feeding strip and I've found that it varies in an inacceptable way. What's wrong?
I've also have read something oh topics about using lumped ports but I've tried with bad results.
Could anyone help me please?
Thanks in adv.
PS.I've attached an image containing the model I've simulated.
Hi,
I've a problem that I've to solve as soon as possible.
I've modeled a printed antenna without ground plane which is feeded by a microstrip line grounded. The ground plane ends some space before the antenna edge so this antenna couldn't be considered a patch...moreover the last part of the feeding strip is not grounded...
The antenna should have a resonance near 400MHz and the feeding line has been studied to have a characteristic impedance of 50 Ohm.
How can I know the input impedance of the antenna?
I've measured the input impedance Z11 at the wave port. How can I extract the real input impedance of the antenna? I know approximately it's value by means of an article about this kind of antenna and I want to know the antenna impedance so I can realize an adequate matching network.
Problem...I've measured S11 at the port for varying lengths of the feeding strip and I've found that it varies in an inacceptable way. What's wrong?
I've also have read something oh topics about using lumped ports but I've tried with bad results.
Could anyone help me please?
Thanks in adv.
PS.I've attached an image containing the model I've simulated.