TXRX V
CC
10
BIAS
TO MIXER
RXRF
50
Ω
i/p
2.7 pF
8
BIAS
LNAREF
7
11
3.3 pF
LNA STAGE
PCB GND
15
TXRX GND
EXTERNAL COMPONENTS
ARE FOR TYPICAL i/p SWR
OF 1.3:1 OVER 1.85
TO 2.55 GHz
Figure 24. Equivalent Circuit for RXRF Input.
TXRX V
CC
10
RECOMMENDED DRIVE
LEVEL IS 300 mV pk-pk.
10 k
TXIF 5
10 k
TXIF IN
TXIFB 6
USE d.c. BLOCKING Cs TO
AVOID CHANGING d.c. BIAS
CONDITIONS. 22 pF MAX. FOR
QUICK TURN ON.
11/15
TXRX GND
TX i/p STAGE
Figure 25. Equivalent Circuit for TXIF Input.
V
CC
3 RXIFB
750
4 RXIF
120 nH
6.8 pF
8.2 pF
50
Ω
o/p
LO
EXTERNAL COMPONENTS
SHOWN ARE FOR 110.592 MHz
I.F. AND TYPICAL 50
Ω
o/p
SWR OF 1.3:1
RF
11/15
TXRX GND
Figure 26. Equivalent Circuit for the RXIF Output and Recommended Matching
Circuit for 110.592 MHz IF.
7-99
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
