HPMX-2006 Test Circuit
off board Cbl (>100 pF)
mixer LO input
C1 R3
LO in
1000 pF
10 pF
12 pF 12
50
IF in
50
50
Ω
IF source
50
IF in
off board Cbl
(>100 pF)
Amp1 Ve1
Amp Ve2
Amp1 Ve2
gnd
Mixer RF out
Mixer RF output
(at DC ground)
Amp RF out
printed
3V
100 pF
Ref
gnd
Amp Vc
22 pF
2.2 pF
Amp RF output
LO in
Mixer Vc
0.01
µF
3V
off board Cbl (>100 pF)
Amp RF in
amp RF input
off board Cbl (>100 pF)
standby input
enable
Figure 11. Test Board Configuration.
HPMX-2006 Circuit Use
Cbl (>100 pF)
mixer LO input
C1 R3
LO in
1000 pF
10 pF
C6
Rterm
C6
IF source
(Rs = Rterm)
C15
standby input
enable
Mixer RF out
L3
Sideband
Filter
Amp1 Ve1
Amp RF in
Amp1 Ve2
gnd
C14
R2
IF in
Amp Ve2
R1
IF in
Amp RF out
L2
Vcc
C12(100 pF)
Ref
gnd
Amp Vc
22 pF
C8
Amp RF output
LO in
Mixer Vc
0.01
µF
Vcc
Figure 12. Schematic Diagram of Typical IC Use.
Table 2 lists values for compo-
nents that change depending on
Component
C1, R3
frequency of operation and AC or
DC coupling of the IF input. For
Value
Condition
F LO < 1.75 GHz
Table 2. Values for Variable Components (see next page for details).
2.5 GHz operation, a pre-amplifier
may be inserted between the
Mixer output and the Amp RF in.
Condition
F LO > 1.75 GHz
Function
LO AC coupling
Value
2.7 pF + 0
Ω
Notes
de-Q with R = 12
Ω
for
broadband operation
< 1.75 GHz
see also R1,R2
also sets load for
optimum IF
[1]
L2 set by position of C12
12 pF + 12
Ω
C6
R1,R2
C8, L2
L3, C14
C15
IF AC coupling
biases IF bases
amp out match
mixer output match
amp input match
100 pF typ
50
Ω
typ
AC coupled
AC coupled
short ckt
open ckt
DC coupled
DC coupled
see Table 3 for values vs. frequency
not used
not used
1900 MHz operation
1900 MHz operation
27 nH
1.3 pF
[2]
3.3 pF
[2]
900 MHz operation 900 MHz operation only
900 MHz operation 900 MHz operation only
Notes:
1. Noise Optimum at R1, R2 = 150
Ω
2. Optional
7-71
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
