Filtered GPS LNAs

Filtered GPS LNAs

Filtered GPS LNAs

GPS navigation and timing systems are a necessity in almost every market place spanning both commercial and military applications. Operating reliably in an increasingly crowded RF spectrum is a continuously evolving challenge to system designers. Performance is dependent upon receiving a clean signal free from intentional and unintentional interferers. The 312 series Filtered GPS LNA is a COTS solution to these types of problems. The product exhibits excellent anti-jam performance as well as a Sub 2 dB noise figure. The 312 Series is COTS part qualified to the most critical of environments for military and airborne applications and available in low order quantities with a short lead time.

Contact APC RF & Microwave on 0330 313 3220 or email to discuss your requirements.

Commercial Off-the-Shelf

Available in the UK from APC RF & Microwave, API Technologies has taken its experience in custom GPS solutions and developed the 312 series product line to meet a need for a cost effective, off-the-shelf solution that doesn’t compromise system performance. The 312 series product line also includes a number of advanced or custom features that allows it to be a good choice for even more specialised requirements, such as customised GPS filters and limiter protection are provisioned on the amplifier assembly and are considered semi-standard. This means that these features can easily be added without significantly impacting the cost or lead time.


In many cases, the operational environment is the reason a user seeks a custom solution. Utilising internal test labs, the 312 Series GPS LNA has been subjected to the most popular testing. When possible, the 312 has been included in testing of other product lines. This environmental testing is critical to provide confirmation that the 312 series product will perform as well as a custom solution.


The 312 series is a configurable product. The purpose for the flexibility is to allow the system designer to tailor the performance to exactly what the system requires. The part number is built to allow the designer to specify which GPS Band(s) that the module must operate in, the level of gain from 16 to 40 dB in 3 dB increments, either single or dual output, the bias option, and the mating RF and DC interfaces.


The 312 series product line is very adaptable making it ideal for most applications, even those applications where a custom design seems like the only solution. For example, the 312 Series has been adapted using custom filters with additional rejection performance. It has been modified to provide 3 outputs instead of the single or dual only. One application required an ultra-lightweight version, so API utilised magnesium and SSMA connectors to reduce the 312 series weight by about 30%. All of these adaptations were done without significant redesign or NRE charges.

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