With Regards,
I have designed a patch antenna in HFSS for 2.45GHz.
S11 is around -44
Impedance 49.6+0.46j
But the problem is with gain which in -ve in dB scale.
I could not understand why? What may the reason for that?
Can someone help me?
I am attaching the plot for your referance.
Thanks
Just because something is resonant and matched does not mean it will radiate. A resonant cavity can be matched, and will not radiate. However, it may be that your antenna is radiating and you are looking in the wrong direction or at the wrong polarization.
The directive gain means the power density at a given point in space. It is proportional to the power gain of the antenna in a particular direction. Here gain is negative in dB means the output power of the antenna is lesser than that of the input feeding power in a given direction. In this plot, the gain is in -dB for phi and theta equal to zero degrees. Please see the radiation pattern in all directions.
- Badges
- Science topic
- Similar topics
- Philosophy
- Philosophy Of Science
- Reasoning