+1 vote
asked by
1600MHz interferer present in application for M10578-A3

I was planning to design in the M10578-A3 (or similar) to discipline a 10MHz OCXO.  Unfortunately my design has a 1600MHz signal used throughout the product.  While this signal would not be deliberately routed to the PCB containing the GPS module, it would of course always be present at a low level.  Probably the lowest I could guarantee the 1600MHz signal would be -80dBm, and even that would take some doing.

It appears this is in-band to the SAW filter and LNA, which would seem to generally preclude the use of a GPS receiver in this product at all.  While I see "AIC, Active Interference Cancellation" referred to in the datasheet I have no idea if this is any help for my application.

Please log in or register to answer this question.

1 Answer

0 votes
answered by


To prevent this signal effecting the GNSS module you should ensure you fit the recommended filter components as shown on page 8 for the reference schematic in the M10578-A3 product specification. 

with regards to your 1600MHz signal you should keep this internal to the PCB as much as possible and create a PCB layout with a stack up based on the below (4 layer example) to help mitigate any radiated noise.

Meet the moderators


Chris Tomlin
Antenna Applications Director, Antenova

Chris develops some of the smallest antenna modules and antennas in the world. He leads Antenova's R&D team and supports customers all over the world


Geoff Schulteis
Senior Antenna Application Specialist, Antenova

Geoff has 19 years' worth of antenna design and OTA measurement experience. He has an intricate knowledge of FCC and world carrier requirements.


Dan Dobransky
Senior Antenna Applications Specialist

Dan is an antenna integration specialist. He has a wealth of design-in and antenna development experience, which he uses to make sure our customer's products thrive


Antennas: The Comparison Guide

Find the perfect antenna for your project