0 2mm no vias on transmission lines.
Gps antenna metal sheet or not.
Transmitter with internal antenna.
If there is no flat metal surface to mount the antenna you can create a ground plane by putting a 12 22cm diameter metal sheet directly below the antenna about 1 2 the signals wavelength which gives 1 4 wavelength per side.
Do not mount the antenna close to the edge of the roof as reflections from the ground may interfere with the signals.
Ism gps bt stamp metal ethertronics antenna specifications gps single band antenna ethertronics produces a wide variety of standard and custom antennas to meet user needs.
A gps antenna needs to operate with signals from as low as 10 degrees above the horizon 80 degrees from normal incidence and at this angle even a thin sheet of plastic has a significant effect.
3mm at the bottom and 3 4mm on the sides at the farthest point antenna pattern made with lds and covered with visual painting.
The best solution is to have a dome or even hemispherical radome made from the best thin dielectric.
For the best results use the antenna in the centre of a metal roof away from any roof bars or radio antennas.
Low band main antenna implementation.
Antennas are located around the device with minimal ground clearance ground clearance.
Some fancy antennas do not require that you add a ground plane.
Pin 1 50ω transmission line pin 3 pin 2 r1 r2 r3 r4 through hole through hole antenna outline vias.
Assemble and mount the gps receiver unit to either the inside of a window not low e glass or to an outside pole or rooftop.
Antenna solution for full metal mobile device chassis metal box construction.
Transmitter with external antenna.
Route through a 3 4 inch drilled hole into the building.
Route through a 5 8 inch drilled hole into the building.
The gps antenna was integrated into the top metal frame above the watch lower metal frame and utilized the system ground which was encircled by the said lower frame as part of the loop resonant path.
Any metal close to a gps antenna can disturb the signal in an unpredictable way due to interference from reflections of weak gps signals.