1.3.3
Satellite outdoor unit, twin low-noise block (LNB) with discrete components
Looking for fully integrated mixer / oscillator / downconverter for universal single LNB?
See section 2.3.2 Complete satellite portfolio for all LNB architectures
Application diagram
horizontal
1
st
antenna stage
LNA
2
nd
stage
LNA
3
rd
stage
LNA
mixer
H low
IF amplifier
low
mixer
BIAS IC
oscillator
V low
mixer
IF amplifier
H high
IF amplifier
(4 x 2)
IF
SWITCH
IF
amplifier
IF out 1
vertical
antenna
high
oscillator
V high
IF
amplifier
IF out 2
1
st
stage
LNA
2
nd
stage
LNA
3
rd
stage
LNA
mixer
IF amplifier
brb022
Recommended products
Function
2
nd
& 3
rd
stage LNA
Function
Product
RF transistor
Product
RF bipolar
transistor
RF transistor
Function
Product
SiGe:C
transistor
Package
Package
Package
Various
Various
Various
Various
Various
Package
Type
Type
Type
BAP64^
BAP51^
BAP1321^
BAP50^
BAP63^
Type
Function
Product
Package
Package
SiGe:C
transistor
Type
Type
Wideband
transistor
SiGe:C
transistor
Oscillator
IF switch
RF diode
PIN diode
Function
Product
Output
stage IF
amplifier
MMIC
IF gain block
1
st
stage
IF
amplifier
MMIC
IF gain block
RF bipolar
transistor
2
nd
stage LNA
Function
Mixer
RF transistor
Product
RF transistor
Wideband
transistor
SiGe:C
RF bipolar
transistor
Wideband
transistor
^ Also available in ultra-small leadless package SOD882D
Product highlight:
BGA28xx-family of IF gain blocks
The BGA28xx IF gain blocks are silicon Monolitic Microwave
Integrated Circuit (MMIC) wideband amplifiers with internal
matching circuitry in a 6-pin SOT363 plastic SMD package.
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Features
No output inductor necessary when used at the output stage
Internally matched to 50 Ω
Reverse isolation > 30 dB up to 2 GHz
Good linearity with low second- and third-order products
Unconditionally stable (K > 1)
20
NXP Semiconductors RF Manual 16
th
edition
PHILIPS [ NXP SEMICONDUCTORS ]
