winsonwhy
Member level 1
how to improve return loss
Hi,
I have build a model in CST MWS, and when solve it by transient time solver the s11 plot that i get not good that is the return loss is around 10dB only, so anybody can help by giving some suggestions on which dimension that i should modify so that i can get a return loss of around 30dB?
The structure of the antenna is a bit different, it is modify from an IEEE antenna. The rectangular substrate(RT duroid 5880) is printed with a small & thin metal strip on one of substrate edge and a patch that same size with the substrate is printed below the substarte, this printed substrate will suspended on the air by 2mm probe(coaxial feed), below the patch it is a ground plane which is separated by some air distance and the coaxial feed will connect to source and punch though the ground plane then reach(solder) the strip that printed above the substrate.
Thanks
Hi,
I have build a model in CST MWS, and when solve it by transient time solver the s11 plot that i get not good that is the return loss is around 10dB only, so anybody can help by giving some suggestions on which dimension that i should modify so that i can get a return loss of around 30dB?
The structure of the antenna is a bit different, it is modify from an IEEE antenna. The rectangular substrate(RT duroid 5880) is printed with a small & thin metal strip on one of substrate edge and a patch that same size with the substrate is printed below the substarte, this printed substrate will suspended on the air by 2mm probe(coaxial feed), below the patch it is a ground plane which is separated by some air distance and the coaxial feed will connect to source and punch though the ground plane then reach(solder) the strip that printed above the substrate.
Thanks