carl
Newbie level 3
Hello, everyone.
I am now trying to design a GPS module with Brevis SMD Antenna. So I designed a Coplanar waveguide for the connection between GPS and Antenna. But in the antenna datasheet, it says the antenna requires some matching circuit. So I am not sure whether I should put both the matching circuit and the coplanar waveguide on the PCB?
Another problem is the layer thickness. I use the Fr4 4 layer pcb. And in the waveguide design software-AppCAD-I need to know the dielectric constant between the signal layer and the first ground plane. Is the material pre-preg called also FR4, with a dielectric constant 4.6?
Many thanks.
I am now trying to design a GPS module with Brevis SMD Antenna. So I designed a Coplanar waveguide for the connection between GPS and Antenna. But in the antenna datasheet, it says the antenna requires some matching circuit. So I am not sure whether I should put both the matching circuit and the coplanar waveguide on the PCB?
Another problem is the layer thickness. I use the Fr4 4 layer pcb. And in the waveguide design software-AppCAD-I need to know the dielectric constant between the signal layer and the first ground plane. Is the material pre-preg called also FR4, with a dielectric constant 4.6?
Many thanks.
