Integration Manual
Table Of Contents
- Document information
- Contents
- 1 System description
- 1.1 Overview
- 1.2 Applications
- 1.3 Architecture
- 1.4 Pin assignments
- 1.5 Supply interfaces
- 1.6 System function interfaces
- 1.7 Debug
- 1.8 GPIO pins
- 1.9 Analog interfaces
- 1.10 Serial interfaces
- 1.10.1 Universal Asynchronous Receiver/Transmitter (UART)
- 1.10.2 Serial Peripheral Interface (SPI)
- 1.10.3 Quad Serial Peripheral Interface (QSPI)
- 1.10.4 Inter-Integrated Circuit (I2C) interface
- 1.10.5 Pulse Width Modulation (PWM) interface
- 1.10.6 Inter-IC Sound (I2S) interface
- 1.10.7 Pulse Density Modulation (PDM) interface
- 1.10.8 USB 2.0 device interface
- 1.11 Antenna interface
- 1.12 Reserved pins (RSVD)
- 1.13 GND pins
- 2 Software
- 3 Flashing application software
- 4 Design-in
- 5 Handling and soldering
- 6 Regulatory information and requirements
- 6.1 ETSI – European market
- 6.2 FCC/ISED – US/Canadian markets
- 6.3 MIC - Japanese market (pending)
- 6.4 NCC – Taiwanese market (pending)
- 6.5 KCC – South Korean market (pending)
- 6.6 ANATEL Brazil compliance (pending)
- 6.7 Australia and New Zealand regulatory compliance (pending)
- 6.8 South Africa regulatory compliance (pending)
- 6.9 Integration checklist
- 6.10 Pre-approved antennas list
- 7 Technology standards compliance
- 8 Product testing
- Appendix
- A Glossary
- B Antenna reference designs
- Related documents
- Revision history
- Contact
NORA-B1 series - System integration manual
UBX-20027617 - R04 Design-in Page 25 of 61
C1-Public
• NORA-B101 modules include an ANT pad for connecting an external antenna. The antenna can
be either an external SMD antenna or an antenna that is connected through an externally
assembled U.FL or RP-SMA connector.
o Antennas with SMD connections, either reverse-polarity SMA connectors or U.FL connectors,
must be radio tested and verified against regulatory FCC, IC, RED, and MIC standards.
• NORA-B106 modules include an embedded PCB antenna. See also On-board antenna (NORA-
B106 only) for design-in information. NORA-B106 cannot be mounted inside a metal enclosure.
Similarly, the physical casing accommodating these modules must not be fabricated in metal or
any plastic that includes metal flakes, metallic based paint, carbon black, or lacquer.
⚠ According to FCC regulations, the transmission line from the module antenna pin to the antenna
(or antenna connector) on the host PCB is considered part of the approved antenna design.
Consequently, module integrators must follow exactly one of the antenna reference designs
used in the module during FCC type approval – or certify their own designs.
4.3.1 RF transmission line design (NORA-B101 only)
RF transmission lines like those from the ANT pad up to the related antenna connector, or up to the
related internal antenna pad, must be designed so that the characteristic impedance is as close as
possible to 50 . Tolerances of ±5 are commonly specified. Figure 5 shows the design options and
the parameters that must be considered when implementing a transmission line on a PCB, where:
• Micro strip is a track coupled to a single ground plane, separated by dielectric material.
• Coplanar micro strip is a track coupled to ground plane and side conductors, separated by
dielectric materials.
• Stripline is a track sandwiched between two parallel ground planes and separated by dielectric
materials.
Figure 5: Transmission line trace design
To design a 50 transmission line properly, consider the following points:
• Designers should provide enough clearance from the surrounding traces and ground plane in the
same layer. Consider a trace-to-ground clearance that is at least twice the width of the trace,
and make sure that the transmission line is “guarded” by the ground plane area on each side.