nRF903 Nordic VLSI, nRF903 Datasheet - Page 29

• Manufacturer Part Number: nRF903
• Description: Multichannel RF Transceiver 433/868/915MHz
• Manufacturer: Nordic VLSI

PRODUCT SPECIFICATION
Figure 20 shows a PCB layout example for the application schematic in Figure 19.
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
b) Bottom silk screen
c) Top view
d) Bottom view
Figure 20. PCB layout example for nRF903 with loop antenna (868MHz)
Nordic VLSI ASA
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Vestre Rosten 81, N-7075 Tiller, Norway
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Phone [phone]
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Fax [phone]
Revision: 3.1
December 2002
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