Antenna feeding contact through the PCB
时间：03-30
整理：3721RD
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Hi,
I am doing a small project of monopole and dipole antennas used in mobile devices.Here,the antennas (made of metal with thickness 0.3 mm) were placed on the inner layer of the mobile casing (casing is made of plastic) and is soldered from the device PCB 50ohm trace using coaxial cable to antenna feeding point.
The design is working good in simulation but in practical,after fabrication i am facing a typical problem - I must use coaxial cable to feed the antenna which make more complex & i dont want such feeding connectivity.
As i was searching through internet,came across the pogo pins,spring contacts with different heights etc...used as feeding connectors.
1. I want to know how we can integrate this into our scenario?
2. Also,what should be the parameters i need to look?
3. Can we realize the same in simulation?
Anyone, Please help me so that i can move forward and make this small project informative.
I am doing a small project of monopole and dipole antennas used in mobile devices.Here,the antennas (made of metal with thickness 0.3 mm) were placed on the inner layer of the mobile casing (casing is made of plastic) and is soldered from the device PCB 50ohm trace using coaxial cable to antenna feeding point.
The design is working good in simulation but in practical,after fabrication i am facing a typical problem - I must use coaxial cable to feed the antenna which make more complex & i dont want such feeding connectivity.
As i was searching through internet,came across the pogo pins,spring contacts with different heights etc...used as feeding connectors.
1. I want to know how we can integrate this into our scenario?
2. Also,what should be the parameters i need to look?
3. Can we realize the same in simulation?
Anyone, Please help me so that i can move forward and make this small project informative.
Hi,
from my point of view it is possible to integrate this into your model. You have to take into account that you are going to have a metal to metal contact that can not be modeled (Contact resistance depends on various parameters as material properties, roughness, ....), but you can define a boundary condition of the type layer impedance to take into account for this contact resistance. Then in this sense it will be great to know if the pogo pin manufacturer provides some info about the value of the contact resistance (these contact resistances tends to be very small (much less than 1 Ohm).
I hope this could help you a little bit