GPS DEVICES ARE NOT CREATED EQUAL!

HERE IS AN ATTEMPT TO EXPLAIN WHY AND WHAT TO WATCH OUT FOR…

I am using the term GPS loosely here as the correct term these days is Global Navigation Satellite System (GNSS) — as the modern chips use multiple systems like GLONASS (Russian), Galileo (EU) or Beidou (China), in addition to the US GPS system.

THINGS TO LOOK FOR:

Here are design considerations to take into account when evaluating a product (or designing one):

FIRMWARE SMARTS

In addition to the physical hardware it is critical that a device is *smart* in terms of how the firmware manages the GPS:

TEST

On one of our recent designs we were testing out different combinations of SAW filter and LNA on the GPS signal. (GPS modules often need a SAW filter to block high power cellular signals if they are placed close to a cellular antenna on a design.) The difference between fairly simple changes on the RF components made a massive difference to the overall performance of the product, like DOUBLE the time to get a GPS fix. This is especially noticeable when the device is in poor signal conditions, like in a forest, urban canyon or even indoors.

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As a freelance copywriter I love the flexibility of working anywhere across the globe and all the opportunities that come with it.

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Aiden Dallas

Aiden Dallas

2 Followers

As a freelance copywriter I love the flexibility of working anywhere across the globe and all the opportunities that come with it.