B Antenna Reference Designs - Ublox NORA-B1 Series System Integration Manual

Abbreviation Definition
RTOS Real Time Operating System
RTS Request To Send signal
RXD Receive Data signal
SDK Software Development Kit
SMA SubMiniature version A RF connector
SMD Solder Mask Defined
SMPS Switching mode power supply (see DC/DC)
SMT Surface-Mount Technology
SPI Serial Peripheral Interface
SWD Serial Wire Debug
THT Through-Hold Technology
TXD Transmit Data signal
TWI See I2C
UART Universal Asynchronous Receiver / Transmitter
UICR User Information Configuration Registers
USB Universal Serial Bus
Table 16: Explanation of the abbreviations and terms used

B Antenna reference designs

Designers can take full advantage of NORA-B1 Single-Modular Transmitter certification approval by
integrating the u-blox reference design into their products. This approach requires compliance with
the following rules:
•
Only listed antennas can be used. Refer to section 6.10 for the listed antennas.
•
Schematics and parts used in the design must be identical to the reference design, please use
u-blox-validated parts for antenna matching.
•
PCB layout must be identical to the one provided by u-blox, please implement one of the reference
designs included in this section or contact u-blox.
•
The designer must use the PCB stack-up provided by u-blox. RF traces on the carrier PCB are part
of the certified design.
The approved list of antennas may be used with the NORA-B101 ANT antenna pin and tuning circuitry
as shown in Figure 18 and Figure 19.
Figure 18: NORA-B101 ANT pin U.FL schematic
UBX-20027617 - R02
C1-Public
NORA-B1 series - System integration manual
Appendix Page 54 of 58