MT3620
Hardware User Guide
MediaTek Confidential
©
2020 MediaTek Inc.
Page 18 of 40
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7.5
Diversity
7.5.1
Receive diversity is supported in hardware
The figure shown below is a block diagram of the RF front-end design when using on-chip receive
diversity.
Receive diversity is supported without the need for an external switch, by way of two additional
receive-only diversity antenna ports.
Per-packet antenna diversity (fast-diversity).
Basebase softwware automatically controls switching between the main and auxilliary receive
paths.
Transmission only occurs throug the main antenna port.
B
B
P
L
L
R
S
S
I
M
e
te
r
R
-cal
RC
-cal
SX
0
(3
~
4
G
H
z
)
L
P
F
5
G
T
R
X
T
R
S
W
Balun
R
F
D
IG
BG
WF_A_RFIO
WF_G_RF_ION
T
R
S
W
2
.4
G
T
R
X
WF_G_RF_AUXIN
WF_A_RF_AUXIN
Antenna
port
WF_G_RF_IOP
M
M
M
M
M
M
AG
C
ANT_ASSIGN
A
n
te
n
n
a
D
iv
e
rs
it
y
E
n
g
in
e
7.5.2
Full transmit/receive diversity is supported in software but requires
an external DPTP switch
The figure shown below shows the RF front-end design when supporting full transmit/receive antenna
diversity.
Full transmit/receive antenna diversity requires an external DPDT RF switch.
In this case RF transceiving is fixed to the main path only, and does not use the auxilliary diversity
receive ports.
