NORA-B1 series - System integration manual
UBX-20027617 - R02
Appendix
Page 54 of 58
C1-Public
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
