Coaxial feeding problem

[itzanidis]

Hi,
I have designed a square patch antenna (15,5mm x 15,5mm) and I want to feed it with a coaxial cable. My first thought was to use an SMA connector with the following dimensions: ext. diam. 4,1 mm / int. diam. 1,3mm
In my opinion, compared to the patche's dimensions this connector is too big.
Can anybody suggest a better solution?

Thanks

 

[adel_48]

why don't you give it a try, in some cases the aperture field of the coaxial conector gives even better response for the antenna.

 

[antennas321]

The SSMA and SMC connectors are smaller than SMA's. The SSMA works higher in frequency than the SMC. See the link below:

**broken link removed**

 

[plasma]

Try to solder thin semi rigid to ground. then one end to the patch input and the
other to suitable SMA connector.

pl