Design by Mohamed K. Nezami for Telekom R&D,
E-mail:
[email protected], ......
Bi-Directional WLAN Amplifier 2.4GHz By: Dr. Mohamed K. Nezami
This is an amplifier or “repeater” that is used to extend the range of WLAN 802.11g range to several kilometers using parabolic dish mounted in the outdoors.
U1 LM7806 4
OUT
C1 .1uF
U2 L1 IN
5 C5 10uF
1
3
+ C2 10uF
C3 33pF
1
OUT
1500nH
+
GND 4
RX_6VDC
IN
GND
6VDC 3VDC
2
3VDC
BP
C6 .1uF
/SHDN
3
MAX8877_EZK30-T or Faich,FAN2500530XTR-ND
4 GND 2 2
RFOUT
3
BIAS GND RFIN
RFOUT
LNA
GND VCC
6
C24 33pF
+
3 2
1 7
2 GND
ERA-4SM Gain=14dB 65ma, 4.9VDC @ pin 3 NF=4dB
WLAN RADIO
KLD-SMT2-0202-A JR1
3B WLAN_RADIO J1
4.7K 3 D4 BAS40LT1
1
4.7nH L8
L7 1500nH 100 C21 100pF
Q_SWITCH
GND
TX/RX
OUT1
3
U9 C8 33pF
2
3 2
1 1 C9 33pF C20
+
IL -0.3dB P1dB=+33dBm
10uF
OUT2
CTRL
GND OUT1
RFC
TX/RX
VDD
4
33pF
5 6
C19
UPG2010TB
IL -0.3dB P1dB=+33dBm C17
L4 33pF 1500nH
C10 .1uF
33pF L5 1500nH
4 5 6 7 8
C11
RF OUT RF OUT RF OUT RF OUT
PRE-PA
PC
0
1.5pF C14
10pF RF IN RF IN
1 2 C12
3
GND
3.3pF
Vcc
15nH L3
3VDC
1.5pF C13
3VDC Q_SWITCH
R15 200k
RF2126 U3
3VDC R2 200k
TX/RX=L-----> PA PATH ON TX/RX=H-----> RXPATH ON
3VDC, MAX PWR
R7 2.4k
R3 1000pF C16 100k J10A1 1
2
AGC_IN
TX_6VDC
3
Vcc=5V, Pout=31dBm Pin=19dBm G=12dB VCC=6VDC
DC
Q1 2N2222A_0
TX/RX=H-----> PA PATH ON TX/RX=L-----> RXPATH ON R9 2.4k
1
TX/RX=L-----> PA PATH ON--> TX_6VDC TX/RX=H-----> RXPATH ON---> RX_6VDC TX_6VDC
D2 TX Indicator
TX/RX
2
U10 C15
OUT2
RFC VDD
R8 2.4k
3
CTRL
R10 4K
4
6VDC
6 5 1
Q2 MMDF1N05E / MMDF1N05ER2OSCT-ND 2
RX_6VDC
D3 RX Indicator
7 8
6
C26 10pF
Q1
5 C18
R5
Q_SWITCH
CNTRL=H ----->OUT2 CNTRL=L ----->OUT1
TX_6VDC
Q2
4
33pF
R4 1.7K
RX_6VDC
UPG2010TB
2
-20Log{1+R1/Rin} Rin=Detector input imp. 1.7K gives -30dB fix -20 to 20 dBm
2
R14 200
CNTRL=H ----->OUT2 CNTRL=L ----->OUT1
J2 Antenna 3
3A
AGC_IN
3
C25 .1uF
C22 1000pF
1
3VDC 1000pF
ERA-5SM
1
IL -1.7dB
10uF
100pF
4
MAX2644
Gain=15dB IIP3=-8dBm NF=2dB IP1dB=-13dBm
C7
L2 436-1092-1-ND, 1uH
C27
1VDC
3 OUT
100pF
D1 DC Indicator
R12 33pF L6 3.3nH
Antenna
MIMIC
1 IN
5
R59 10k
C28 .1uF
C63
C23
1 3
GND GND
RFIN
C62
1VDC
1 2
1
RF FIL 4
U7
3
R1 10K
3VDC
R6 3.9k
U6 LFB2H2G45SG7A134 or TKS2610CT-ND
L18 30nH
U21
U22 UA741CD 2
5 4 6
33pF
1
TX/RX
+
R13 10K
C52
-
R60 23
R11 4K
6VDC
WLAN PROJECT , Dr. M.K. Nezami , Dr. Zul, Eng. Kamal, Eng. Faisal Title WLAN PROJECT: Bi-Directional WLAN Amplif ier 2.4GHz Size D Date:
Document Number Tuesday , April 05, 2005
Rev A Sheet
1
of
1
Design by Mohamed K. Nezami for Telekom R&D,
E-mail:
[email protected], ......
Design by Mohamed K. Nezami for Telekom R&D,
E-mail:
[email protected], ......
Design by Mohamed K. Nezami for Telekom R&D,
E-mail:
[email protected], ......