znzn
Newbie level 4
- Joined
- Apr 2, 2014
- Messages
- 7
- Helped
- 0
- Reputation
- 0
- Reaction score
- 0
- Trophy points
- 1
- Activity points
- 46
Afterfewdays of trying, i still couldnt get the the matching to work. here are the steps that i've done.
1. find the impedance of the patch
2. through z matrices, i add a small patch to eliminate the imaginary part of the patch, and label it as Zl'.
3. using Zt=(Zo x Zl'), where Zo = 50ohm, I obtain the width of the QW feedline required.
Based on the result, i've obtained a total impedance approximately of 49+j1 impedance. I supposed this is a matched patched antenna, but the problem is that, my total efficiency simulated keep on getting -5db which is not good.
i've attached the cst file. any help is appreciated
1. find the impedance of the patch
2. through z matrices, i add a small patch to eliminate the imaginary part of the patch, and label it as Zl'.
3. using Zt=(Zo x Zl'), where Zo = 50ohm, I obtain the width of the QW feedline required.
Based on the result, i've obtained a total impedance approximately of 49+j1 impedance. I supposed this is a matched patched antenna, but the problem is that, my total efficiency simulated keep on getting -5db which is not good.
i've attached the cst file. any help is appreciated