EasyManuals Logo
Home>Ublox>Receiver>MAX-M10S

Ublox MAX-M10S User Manual

Ublox MAX-M10S
89 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #67 background imageLoading...
Page #67 background image
MAX-M10S-Integration manual
Normal-gain mode is not recommended for MAX-M10S because the integrated LNA already
provides sufficient gain.
The internal LNA mode can be configured at run time in BBR and RAM layers using the
configuration item CFG-HW-RF_LNA_MODE and applying a reset or set permanently in the
one-time-programmable (OTP) memory in production. The configuration in the OTP memory
is automatically applied at every startup. Refer to Internal LNA mode configuration for more
information.
Refer to the MAX-M10S data sheet [1] for RF parameters and power consumption for the
internal LNA modes.
3.3.2 Out-of-band blocking immunity
Out-of-band RF interference may degrade the quality and availability of the navigation solution.
Out-of-band immunity limit describes the maximum power allowed at the receiver RF input with no
degradation in performance. Minor violation of the immunity limit may reduce C/N0 of the received
signals but does not necessarily affect the overall receiver performance. However, a significant
violation may reduce receiver sensitivity or cause a complete loss of signal reception. The severity of
the interference depends on the repetition rate, frequency, signal level, modulation, and bandwidth
of the signal.
Figure 26 shows a typical out-of-band immunity level for an unprotected MAX-M10S RF input. The
internal LNA is in low-gain mode (default). The measurement is done at room temperature using a
test signal with 64QAM modulation and 10 MHz bandwidth similar to an LTE signal.
In general, the immunity is lower close to the receiver's in-band. The narrow frequency bands with a
lower immunity are related to the internal operation of the receiver. At 500 MHz and 800 MHz ranges,
the reduced immunity is due to harmonic multiples generated at the integrated LNA input falling
at the receiver's in-band. Adding an external SAW filter in front of the RF input protects the LNA
suppressing the harmonic generation. The SAW filter also further improves the overall immunity of
the design.
If the out-of-band immunity limit is exceeded, it is recommended to verify that the receiver
performance is not affected or is at an acceptable level in the presence of interference.
UBX-20053088 - R03
3 Hardware integration Page 67 of 89
C1-Public

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Ublox MAX-M10S and is the answer not in the manual?

Ublox MAX-M10S Specifications

General IconGeneral
BrandUblox
ModelMAX-M10S
CategoryReceiver
LanguageEnglish

Related product manuals