Help for PCB Antenna for 800/900 and 1800/1900 in all MHz

A

arvinfx

Member

• Nov 13, 2020

• #1

Dear friends

I am designing a PCB for Sim868 and I want to design PCB antenna for Bluetooth and GSM for it, ( for GNSS (GPS) might be good to buy an active antenna)

It could be like this shape but i am not sure :



I'm not familiar with this kind of designs, do you have any sample or PCBLIB file for it? or any advice to how i have to do this?


Best Regards

 

ronsimpson

Well-Known Member

Most Helpful Member

• Nov 13, 2020

• #2

Usually, in the data sheet there are antenna examples. I could not find any.

 

A

arvinfx

Member

• Nov 13, 2020

• #3

I prefer to do it all in one.

 

A

arvinfx

Member

• Nov 18, 2020

• #4

Any idea?

 

ronsimpson

Well-Known Member

Most Helpful Member

• Nov 18, 2020

• #5

I made a GSM antenna years ago. The IC data sheet had a example of how they wanted the antenna made. Try looking for other GSM parts that have better information. There should be a PCB layout guide for these parts.

 

unclejed613

Well-Known Member

Most Helpful Member

• Nov 20, 2020

• #6

you could use a planar disc dipole. the disc diameter is 1/4 wavelength at the lowest frequency of interest, and the spacing at the feedpoint determines the highest usable frequency. it has low SWR over the whole bandwidth. https://www.wa5vjb.com/references/PlanarDiskAntennas.pdf

 

A

arvinfx

Member

• Jan 31, 2021

• #7

Hello, I have made it! and it works with out calibration, GSM and Blutooth on-board antenna.

Take a look: