Features and Description
• Compact size
• Broadband up to 50 GHz
• Excellent performance
The Agilent Technologies 87300 series
of compact, broadband directional/
sampling and hybrid couplers are
well suited for signal monitoring or,
when combined with a coaxial detector, signal leveling. See page 2 for the
wide range of product offerings.
Product Applications
These compact, broadband directional
couplers are important components
for many microwave measurement
systems. Although most modern signal generators and sweepers supply
signals whose power levels are stable
with respect to frequency, variations
in signal level are introduced due
to the cable losses (which increase
with frequency) and the frequency
response of other components in the
signal path. Inserting a directional
coupler into the system with a suitable microwave detector to supply
feedback to the ALC circuit of a signal
generator or sweeper provides a
leveled signal at a particular point in
the system (Figure 1).
Agilent 8474B,C,E detectors offer
excellent broad-band frequency
response and low SWR for this application. Other applications include
power monitoring with an 848X
series power sensor connected to the
sampling port. Connect the sampled
signal port to a microwave counter
to monitor frequency or to a signal
analyzer for frequency spectrum
monitoring (Figure 2).
Agilent 87300B,C,D and 87301B,C,D,E
Directional Couplers
87310B Hybrid Coupler
Product Overview
2
Product Specifications
Model 87300B 87300C 87300D
Frequency range (GHz) 1 to 20 GHz 1 to 26.5 GHz 6 to 26.5 GHz
Nominal coupling and
variation with respect
to output (or coupling
factor over insertion loss) 10 ±0.5 dB 10 ±1 dB 10 ±0.5 dB
Frequency sensitivity ±0.35 dB, 1 to 20 GHz ±0.5 dB, 1 to 26.5 GHz ±0.3 dB
Directivity >16 dB >14 dB, 1 to 12.4 GHz >13 dB
>12 dB, 12.4 to 26.5 GHz
Maximum SWR 1.35 1.35, 1 to 12.4 GHz 1.40
1.50, 12.4 to 26.5 GHz
Insertion loss <1.5 dB <1.2 dB, 1 to 12.4 GHz < 1.3 dB
<1.7 dB, 12.4 to 26.5 GHz
Typical insertion loss 0.6+0.04f 0.6+0.04f .6 + 0.025f
(dB, f = freq. in GHz)
Power rating
Average 20 W 20 W 20 W
Peak 3 kW 3 kW 3 kW
Connectors SMA (f) 3.5 mm (f) 3.5 mm (f)
Weight in grams (oz) 74 (2.6) 60 (2.1) 31.2 (1.1)
Model 87301B 87301C 87301D 87301E
Frequency range (GHz) 10 to 46 GHz 10 to 50 GHz 1 to 40 GHz 2 to 50 GHz
Nominal coupling and
variation with respect
to output (or coupling
factor over insertion loss) 10 ±0.7 dB 10 ±0.7 dB 13 ±1 dB 10 ±1 dB
Frequency sensitivity ±0.3 dB ±0.5 dB ±1.2 dB, 1 to 40 GHz ±0.6 dB, 2 to 26.5 GHz
±0.8 dB, 2 to 50 GHz
Directivity >10 dB >10 dB >14 dB, 1 to 20 GHz >13 dB, 2 to 26.5 GHz
>10 dB, 20 to 40 GHz >10 dB, 26.5 to 50 GHz
Maximum SWR 1.80 1.80 1.5, 1 to 20 GHz 1.5, 2 to 26.5 GHz
1.7, 20 to 40 GHz 1.8, 26.5 to 50 GHz
Insertion loss <1.9 dB <1.9 dB <1.2 dB, 1 to 20 GHz <2 dB
<1.9 dB, 20 to 40 GHz
Typical insertion loss .8+0.022f .8+0.022f 0.4 + 0.035f 0.55 + 0.025f
Power rating
Average 20 W 20 W 20 W 20 W
Peak 3 kW 3 kW 3 kW 3 kW
Connectors 2.92 mm (f) 2.4 mm (f) 2.4 mm (f) or 2.4 mm (f)
2.92 mm (f) for Option 292
Weight in grams (oz) 28.4 (1) 28.4 (1) 37 (1.3) 34 (1.2)
3
Agilent 87310B Specifications
Frequency range 1 to 18 GHz
Coupling 3 dB
Amplitude imbalance ±0.5 dB at each port, centered at –3 dB
Phase imbalance ±10 Degrees
Isolation >17 dB
Maximum SWR 1.35
Insertion loss <2 dB
Power rating
Average 20 W
Peak 3 kW
Connectors SMA (f)
Weight in grams (oz) 148 (5.2)
87300B
87300C
87300D, 87301B, 87301C
87301 D,E
87300D
Dimensions are in millimeters (inches) nominal unless otherwise specified
6.4
(0.25)
9.7(0.38)
6.4
(0.25)
C
25.4
(1.00)
(3.50)
31.8
(1.25)
88.9
7.6
(0.300)
4-40 UNC-2B thd X 1/4 deep
4 holes this side & far side
11.9
(0.47)
18.5
(0.73)
13.5
(0.53)
6.7
(0.265)
6.4
(0.25)
12.2(0.48)
C
(0.25)
6.4
3 places
6.4
(0.25)
24.6
(0.970)
(0.25)
C
9.7
(0.38)
Connector Type
2.4 mm (f)
2.92 mm (f)
74.7
(2.940)
25.4
(1.000)
6.4
50.8
(2.00)
31.8
(1.25)
9.7(0.38)
9.7(0.38)
7.6
(0.300)
4-40 UNC-2B thd X 1/4 deep
4 holes this side & far side
11.9
(0.47)
5.8(0.23)
4-40 UNC-2B thd X 1/4 deep
4 places
C
16.5
(0.65)
11.9
(0.47)
16.5
(0.65)
(0.40)
10.2
13.5
(0.53)
5.1
(0.20)
6.7
(0.265)
6.4
(0.25)
2.4
(0.93)
14.2
(0.56)
C
typical
28.5
(1.12)
6.4
(0.25)typical
34.3
(1.350)
6.4
(0.25)
2.6 (0.104)
Connector Type
3.5 mm (f)
2.92 mm (f)
2.4 mm (f)
119.4
(4.700)
7.6
(0.300)
50.8
(2.000)
11.9
(0.47)
16.3
(0.62)
thru
C
12.2 (0.48
9.7 (0.38)
28.4 (1.0)
(0.26) typical
4-40 UNC-2B thd X 1/4 deep
4 holes this side & far side
6.7
(0.265)
(0.53)
C
9.7(0.38)
31.8
(1.250)
6.6
13.5
13.2
(0.52)
Figure 1
Figure 2
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Product specifications and descriptions in
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© Agilent Technologies, Inc. 1997, 2000, 2004
Printed in U.S.A. March 23, 2004
5091-6188E
Measurement system
8350 83594A
Measurement system
Signal
analyzer
Power
meter
Microwave
counter
RF
out
ALC
input
Switch
matrix
Test
interface
87300C
Switch matrix test interface
To auxiliary
connections
8474C
DUT
RF In
87300C
Agilent Email Updates
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