There is a persistent myth in GPS and GNSS system design: more gain ahead of the receiver is always better. Stack enough amplification in front and the problem goes...
Your GPS receiver is not broken. The satellite signal is fine. The problem is sitting between your antenna and your chip, and it is almost certainly caused by a signal...
There is a fundamental tension at the heart of every RF receiver front end. The trade-off between selectivity and sensitivity sounds abstract, but it shows up in entirely practical...