HMC521ALC4 Data Sheet
Rev. 0 | Page 16 of 24
Isolation and Return Loss
0
10
20
30
40
50
60
7.5
8.5
9.5
10.5
1
1.5
12.5
13.5
14.5
LO TO RF ISOLATION (dB)
RF FREQUENC
Y (GHz)
+8
5
°C
+2
5
°C
–4
0
°C
16780-170
Figure 67. LO to RF Isolation vs. RF Frequency at Various Temperatures,
LO = 15 dBm
0
10
20
30
40
50
60
7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5
LO TO IF ISOLATION (dB)
RF FREQUENCY (GHz)
IF1, –40°C
IF1, +25°C
IF1, +85°C
IF2, –40°C
IF2, +25°C
IF2, +85°C
16780-171
Figure 68. LO to IF Isolation vs. RF Frequency at Various Temperatures,
LO = 15 dBm
0
10
20
30
40
50
60
7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5
RF TO IF ISOLATION (dB)
RF FREQUENCY (GHz)
IF1, –40°C
IF1, +25°C
IF1, +85°C
IF2, –40°C
IF2, +25°C
IF2, +85°C
16780-17
2
Figure 69. RF to IF Isolation vs. RF Frequency at Various Temperatures,
LO = 15 dBm
0
10
20
30
40
50
60
7.5
8.5
9.5
10.5
1
1.5
12.5
13.5
14.5
LO
TO RF ISOLA
TION (dB)
RF FREQUENC
Y
(GHz)
LO =
1
1dBm
LO = 13dBm
LO = 15dBm
LO = 17dBm
LO = 19dBm
16780-167
Figure 70. LO to RF Isolation vs. RF Frequency at Various LO Power Levels,
T
A
= 25°C
0
10
20
30
40
50
60
7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5
LO TO IF ISOLATION (dB)
RF FREQUENCY (GHz)
LO TO IF1, 11dBm
LO TO IF2, 11dBm
LO TO IF1, 13dBm
LO TO IF2, 13dBm
LO TO IF1, 15dBm
LO TO IF2, 15dBm
LO TO IF1, 17dBm
LO TO IF2, 17dBm
LO TO IF1, 19dBm
LO TO IF2, 19dBm
16780-168
Figure 71. LO to IF Isolation vs. RF Frequency at Various LO Power Levels,
T
A
= 25°C
0
10
20
30
40
50
60
7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5
RF TO IF ISOLATION (dB)
RF FREQUENCY (GHz)
LO TO IF1, 11dBm
LO TO IF2, 11dBm
LO TO IF1, 13dBm
LO TO IF2, 13dBm
LO TO IF1, 15dBm
LO TO IF2, 15dBm
LO TO IF1, 17dBm
LO TO IF2, 17dBm
LO TO IF1, 19dBm
LO TO IF2, 19dBm
16780-169
Figure 72. RF to IF Isolation vs. RF Frequency at Various LO Power Levels,
T
A
= 25°C
