Smart LTE Module Series
SC66 Hardware Design
SC66_Hardware_Design 91 / 139
Reference specifications are listed below:
IEEE 802.11n WLAN MAC and PHY, October 2009+IEEE 802.11-2007 WLAN MAC and PHY, June
2007
IEEE Std 802.11b, IEEE Std 802.11d, IEEE Std 802.11e, IEEE Std 802.11g, IEEE Std 802.11i: IEEE
802.11-2007 WLAN MAC and PHY, June 2007
4.1.2. Wi-Fi MIMO Design Guidelines
Bad design of DSI trace and layout may cause reduced Wi-Fi MIMO receiving sensitivity. In order to
avoid this, please follow the design rules listed below:
Control the impedance of either feeder line or PCB trace in Wi-Fi MIMO part to
50Ω, and keep
the trace length as short as possible;
Maximize the distance between Wi-Fi MIMO antenna and DSI trace (including trace routing and
antenna layout) to avoid mutual interference.
Space for locating EMI filter should be reserved in DSI trace.
4.2. BT Overview
SC66 module supports BT5.0 (BR/EDR+BLE) specifications, as well as GFSK, 8-
DPSK, π/4-DQPSK
modulation modes.
802.11n HT40
MCS0
-87dBm
802.11n HT40
MCS7
-68dBm
5GHz
802.11a
6Mbps
-90dBm
802.11a
54Mbps
-70dBm
802.11n HT20
MCS0
-88dBm
802.11n HT20
MCS7
-69dBm
802.11n HT40
MCS0
-86dBm
802.11n HT40
MCS7
-66dBm
802.11ac VHT20
MCS8
-68dBm
802.11ac VHT40
MCS9
-64dBm
802.11ac VHT80
MCS9
-60dBm
