Wi-Fi Mimo Design Guidelines; Bt Overview - Quectel SC66 Hardware Design

802.11n HT40
802.11n HT40
802.11a
802.11a
802.11n HT20
802.11n HT20
5GHz 802.11n HT40
802.11n HT40
802.11ac VHT20
802.11ac VHT40
802.11ac VHT80
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.
SC66_Hardware_Design
MCS0 -87dBm
MCS7 -68dBm
6Mbps -90dBm
54Mbps -70dBm
MCS0 -88dBm
MCS7 -69dBm
MCS0 -86dBm
MCS7 -66dBm
MCS8 -68dBm
MCS9 -64dBm
MCS9 -60dBm
Smart LTE Module Series
SC66 Hardware Design
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