11/14/2022 0 Comments Spuck feedy![]() Manufacturing guidelines for the antenna should suggest the proper PCB layout. In some cases, yes, in some the antenna requires nothing beneath it. But what about inner layers (2nd andģrd)? Should it be etched below antenna or it is better to make there Check the gains and size in the datasheet and select the best one for your application.Īs I understood, in order to get best performance, entire layer with I'd imagine that the antennas have different gains associated with them. There is no way to answer this question by only knowing the size. Modem directly below GPS antenna or smaller antenna but better (not directly below GPS antenna)? What is better: bigger antenna but Should I select smallerĪntenna (18 x 18 mm) to have more space for better placement of modem Spuck feedy Patch#Now I selected 25 x 25 mm GPS patch antenna. If the GPS antenna requires a ground plane, then it would most likely be ok to place something on the opposite side of the board as the ground plane would shield any electric fields from the antenna. In many cases manufacturers recommend removing the ground plane beneath the GPS antenna, if this is the case placing anything else underneath the antenna could change the capacitance. There will be GSM antenna traces directly below GPS antenna). Modem to the opposite side of PCB as much as possible? (I worry that Thank you in advance for your time answering questions.Ĭan I place GPS/GSM modem directly below GPS antenna or should I move But what about inner layers (2nd and 3rd)? Should it be etched below antenna or it is better to make there ground pads too? As I understood, in order to get the best performance, the entire layer with GPS antenna must be plain ground.Should I select smaller antenna (18 x 18 mm) to have more space for better placement of modem (not directly below GPS antenna)? What is better: bigger antenna but modem directly below GPS antenna or smaller antenna but the better placement of modem? Now I selected 25 x 25 mm GPS patch antenna.Can I place GPS/GSM modem directly below GPS antenna or should I move modem to the opposite side of PCB as much as possible? (I worry that there will be GSM antenna traces directly below GPS antenna).On the top layer, I placed a GPS antenna, on the bottom - GPS/GSM modem. I have been tracing PCB for the first time and came to a few questions regarding GPS antenna selection and placement on PCB.īasically, I am trying to make as small as possible PCB with GPS/GSM modem. ![]()
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