PHASE ERROR (DEGREES)
AMPLITUDE ERROR (dB)
HPMX-2005 Typical
Performance Using Phase
Adjust
The HPMX-2005 has an internal
phase shifter that in normal use
(pin 9 open circuited) operates
over a frequency range of 25 to
200 MHz. By applying 5 volts to
pin 9, this frequency range can be
raised to beyond 250 MHz. This
page shows HPMX-2005 modu-
lator performance with pin 9 tied
to V
CC
= 5 V for higher frequency
operation. Using the
Φ
adjust has
minimal effect on the VSWRs at
the LO port.
1
6
0.8
Φ
ADJ = NC
Φ
ADJ = NC
4
0.6
0.4
2
0.2
Φ
ADJ = 5 V
0
0
100
200
300
Φ
ADJ = 5 V
0
0
100
200
300
FREQUENCY (MHz)
FREQUENCY (MHz)
Figure 13. HPMX-2005 RMS Amplitude
Error vs. Frequency and
Φ
Adjust.
V
CC
= 5 V, LO = -12 dBm, V
Iref
= V
Qref
=
2.5 V,
√
(V
Imod
- 2.5)
2
+ (V
Qmod
- 2.5)
2
=
0.75 V, T
A
= 25
°
C.
Figure 14. HPMX-2005 RMS Phase
Error vs. Frequency and
Φ
Adjust.
V
CC
= 5 V, LO = -12 dBm, V
Iref
= V
Qref
=
2.5 V,
√
(V
Imod
- 2.5)
2
+ (V
Qmod
- 2.5)
2
=
0.75 V, T
A
= 25
°
C.
15
0
-30
12
OUTPUT POWER (dBm)
RMS ERROR (%)
-2
LO LEAKAGE (dBm)
-40
Φ
ADJ = NC
Φ
ADJ = 5 V
-50
9
-4
Φ
ADJ = 5 V
-6
Φ
ADJ = NC
6
Φ
ADJ = NC
3
Φ
ADJ = 5 V
0
0
100
200
300
-8
-10
0
50
100
150
200
250
300
-60
0
100
200
300
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
Figure 15. HPMX-2005 RMS Modula-
tion Error vs. Frequency and
Φ
Adjust.
V
CC
= 5 V, LO = -12 dBm, V
Iref
= V
Qref
=
2.5 V,
√
(V
Imod
- 2.5)
2
+ (V
Qmod
- 2.5)
2
=
0.75 V, T
A
= 25
°
C.
1000 pF
V
CC
= +5 V
1000 pF
Figure 16. HPMX-2005 Output Power
vs. Frequency and
Φ
Adjust. V
CC
= 5 V,
LO = -12 dBm, V
Iref
= V
Qref
= 2.5 V,
V
Imod
= V
Qmod
= 3.25 V, T
A
= 25
°
C.
Figure 17. HPMX-2005 LO Leakage vs.
Frequency and
Φ
Adjust. V
CC
= 5 V,
LO = -12 dBm, V
Iref
= V
Qref
= V
Imod
=
V
Qmod
= 2.5 V, T
A
= 25
°
C.
1
2
3
4
Q
ref
5
Q
mod
6
1000 pF
LO
+
LO
–
1000 pF
7
8
16
1000 pF
15
RF
out
14
13
12
11
10
9
I
ref
I
mod
Φ
ADJ. CONNECTION FOR
140-250 MHz OPERATION
Figure 18. Connection of Pin 9 for Operation of the
HPMX-2005 at Frequencies Between 140 MHz and
250 MHz.
7-59
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
