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What is the recommended method for tuning an antenna for specific bands?
We have designed a PCB using the SR4L002 antenna, including the recommended matching network and component values from the data sheet.  We received first samples, and an initial S11 on VNA shows sub-optimal performance.

Does Antenova have an app note outlining procedures to tune the matching network for multiple bands (700-850MHz, and 1700MHz-1900MHz).

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How to prepare a board for the measurement of Return Laws I have described here
http://www.gsm-modem.de/M2M/antenna-test/antenna-tests/

What are the dimensions of the board in the X and Y axis? On which axis was the antenna mounted? For 700 MHz the board should have a length of approx. 120 mm. Are the approx. 120 mm available?

Consider that metallic objects like a display or a battery near the antenna have a strong influence on it. If the antenna is influenced by the metallic objects, it is often not possible to adapt it with an adaptive circuit.

If you wish I can analyse your board. Harald Naumann (AT) LTE-Modem.com

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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.

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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.

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