QUESTION

asked by
Antenna choice for 2G/NB-IoT
Hello,

I'm looking for an antenna adapted to 2G & NB-IoT communications for European market and I'm wondering if a configuration would exist with SR4C033 to fit to bands 8 and 20. The datasheet shows separate configurations for 5 & 8 and 20.

If not possible, which antenna would you advise to use for this application ?
PCB total size is 115x48mm (h x w) but the surface for the antenna is of course limited!

Thank you,
Yoann

Please log in or register to answer this question.

1 Answer

answered by

For your application and PCB size i would suggest one of the following assuming you wish to use an SMD solution.

Similis (SR4C005)

Calvus (A10340H)

Integra (SR4L049)

commented by
Hello,

We already use SR4L049 for a 2G/3G design, it is the only choice that fits to the mechanical constraints.
Is there a way, using the matching circuit, to optimize the performances for 791-960 MHz frequencies, neglecting higher frequencies ?

Thank you,
Yoann
commented by
SR4L049 is already for 791-960MHz, 1710-2170MHz, 2300-2400MHz, 2500-2600MHz.
commented by
Yes, I know, I already use it for 2G/3G design...

Let's take the example of the ISM antenna SR42I010, that can be used for both 868MHz & 915 MHz with a dual band tuning configuration (45% efficiency according to the datasheet). But, if you don't care about 915MHz, you can optimise the performances for 868MHz by using a single band tuning configuration (60% efficiency according to the datasheet).

This is what I'd like to do with SR4L049 by using a tuning configuration that is optimized for lower frequencies.

Meet the moderators

Yu Kai Yeung

Antenna Engineer at Antenova Yu Kai is an antenna expert with over 10 years of experience in the design and testing of antennas. He has experience helping customers with certification testing, combined with his knowledge of RF measurement procedures.

Raymond Lee

Senior Antenna Engineer at Antenova Raymond has a wealth of experience in RF and antennas across many industry sectors. He has over 20 years of experience in electronics design and manufacturing.

download-guide-image

Antennas: The Comparison Guide

Find the perfect antenna for your project

Download
...