NRF9E5 Datasheet, PDF (96/104 Pages) List of Unclassifed Manufacturers – 433/868/915MHz RF Transceiver with Embedded 8051 Compatible Microcontroller and 4 Input, 10 Bit ADC

PRODUCT SPECIFICATION
nRF9 E5 Single Chip Transceiver with Embedded Microcontroller and ADC
21.2 PCB Layout Example, Differential Connection to a Loop Antenna
Figure 36 shows a PCB layout example for the application schematic in Figure 35.
A double-sided FR-4 board of 1.6mm thickness is used. This PCB has a ground plane on
the bottom layer. Additionally, there are ground areas on the component side of the
board to ensure sufficient grounding of critical components. A large number of via holes
connect the top layer ground areas to the bottom layer ground plane. There is no ground
plane beneath the antenna.
a) Top silk screen
No components in bottom layer
b) Bottom silk screen
c) Top view
d) Bottom view
Figure 36 PCB layout example for nRF9E5, differential connection to a loop antenna.
Main office: Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway -Phone [phone] - Fax [phone]
Revision: 1.1
Page 96 of 104
June 2004