Antenna for EC20 R2.1

Is it acceptable to use antenna with VSWR greater than 2 for GSM/WCDMA/EVDO/CDMA/TD-SCDMA/LTE in EC20 R2.1 design? The datasheet recommends to use antenna with VSWR less than or equal to 2 for GSM/WCDMA/EVDO/CDMA/TD-SCDMA/LTE antenna but most of the antennas has VSWR greater than 2.5 at LTE band.

Hi Arun_K_Thawait,
Sorry to keep u waiting.
If you use external antenna, then you can choose the VSWR>2.0 or >2.5 at LTE band. But it will cause signal quality degradation. So it is suggested that VSWR as low as possible.
If you use the SMT antenna with higher VSWR, then maybe cause more loss in signal quality.
If your product has ISP certification requirements, then contact us, we will provide you with customized antenna service for a fee.

Hello @frankfeng2020
I have EC20 GSM module with 5dbi rubber duct antenna of 19 cm length. I want datasheet or specifications of that antenna. How to select antenna for EC 20 GSM module?
Thanks in advance.

Hi Sana,
Pleasede contact with support team ( for more antenna information.