BGU8009
NXP
The BGU8009 is a Low Noise Amplifier (LNA) dedicated for Global Navigation Satellite System (GNSS) receiver applications.
Application NoteNxp
BGU8009 Matching Options for 850 MHz / 2400 MHz Jammer Immunity
Application note detailing input matching options for the BGU8009 GNSS LNA to provide additional immunity against GSM-850/900 and 2.4 GHz WLAN jammers.
Overview
This application note describes alternative input matching configurations for the NXP BGU8009 Low Noise Amplifier (LNA), which is dedicated to Global Navigation Satellite System (GNSS) receivers. The document outlines a dual notch topology using low-cost chip capacitors and inductors to create gain nulls in the 800 MHz and 2400 MHz bands. This design mitigates second-order intermodulation products (IM2) generated by concurrent GSM and WLAN signals that can interfere with GNSS frequencies. It provides comparative performance data, schematics, and a bill of materials for both baseline and jammer-immune matching circuits.
Use Cases
- GNSS receiver front-end design
- GPS/GLONASS/Galileo/Compass signal amplification
- Mobile devices prone to GSM and WLAN interference
- Automotive navigation systems
- Wearable GPS technology
Topics
BGU8009
LNA
GNSS
GPS
WLAN
GSM-850
GSM-900
Jammer Immunity
Input Matching
IM2
IIP2
NXP
Referenced Parts
LQW15
Murata
The standard BGU8009 evaluation board is supplied with a Murata LQW15 series inductor (0402 size) in the input match.
LQG15
Murata
L3 Notch 3.0 nH Murata LQG15
LQG15
Murata
L2 Notch 6.2 nH Murata LQG15
LQG15
Murata
Also note that an LQG15 ceramic inductor can be used as the series inductor in the input match (L1).
5.6nH
Murata
L1 Input Matching 5.6nH Murata LQW15
| BGU8009 | NXP | The BGU8009 is a Low Noise Amplifier (LNA) dedicated for Global Navigation Satellite System (GNSS) receiver applications. |
| LQW15 | Murata | The standard BGU8009 evaluation board is supplied with a Murata LQW15 series inductor (0402 size) in the input match. |
| GRM15 | Murata | C2 Notch 4.7 pF Murata GRM15 |
| GRM15 | Murata | C3 Notch 1.0 pF Murata GRM15 |
| LQW15 | Murata | The standard BGU8009 evaluation board is supplied with a Murata LQW15 series |
| LQW15 | Murata | L1 Input Matching 5.6 nH Murata LQW15 |
| LQW15 | Murata | L1 Input Matching 5.6nH Murata LQW15 |
| LQG15 | Murata | L3 Notch 3.0 nH Murata LQG15 |
| LQG15 | Murata | L2 Notch 6.2 nH Murata LQG15 |
| LQG15 | Murata | Also note that an LQG15 ceramic inductor can be used as the series inductor in the input match (L1). |
| 5.6nH | Murata | L1 Input Matching 5.6nH Murata LQW15 |