v1.0

Dedicated GPS antenna with LNA module example

An example of an implementation with a dedicated Global Positioning System (GPS) antenna and Low-Noise Amplifier (LNA) module is shown in Dedicated GPS antenna and LNA module.

Figure 1. Dedicated GPS antenna and LNA module
Dedicated GPS antenna and LNA module
Table 1. Components of antenna interface with dedicated GPS antenna and LNA module
Reference Description
L1 Antenna matching
L2 Antenna matching
L3 Antenna matching
L4 9.1 nH, LNA input matching inductor
C1 100 nF, LNA power supply filtering capacitor
C2 100 pF, LNA power supply filtering capacitor
C3 100 nF, LNA enable filtering capacitor
C4 LNA enable filtering capacitor
R1 1 MΩ, pull-down resistor
U3 Global Navigation Satellite System (GNSS) front-end module
A2 ACAG0301-1575-T ceramic chip antenna

The following components are highlighted in Layout with dedicated GPS antenna and LNA module:

  1. GPS front-end module
  2. Antenna matching network
  3. Dedicated GPS antenna
  4. Antenna keep-out area
Figure 2. Layout with dedicated GPS antenna and LNA module
Layout with dedicated GPS antenna and LNA module