87310B - Agilent / Hewlett-Packard

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 detec-

tor, 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 sig-

nal 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 suit-

able 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 appli-

cation. 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

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)

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)

6.4

(0.25)

9.7(0.38)

88.9

(3.50)

6.4

(0.25)

11.9

(0.47)

18.5

(0.73)

13.5

(0.53)

6.7

(0.265)

25.4

(1.00) 31.8

(1.25)

7.6

(0.300)

4-40 UNC-2B thd X 1/4 deep

4 holes this side & far side

87300B

6.4

(0.25)

12.2(0.48)

74.7

(2.940)

6.4

(0.25)

11.9

(0.47)

16.5

(0.65)

13.5

(0.53)

6.7

(0.265)

24.6

(0.970) 25.4

(1.000)

7.6

(0.300)

4-40 UNC-2B thd X 1/4 deep

4 holes this side & far side

87300C

6.4

(0.25)

6.7

(0.265)

2.6 (0.104)

thru

14.2

(0.56)

28.5

(1.12)

13.5

(0.53)

6.4

(0.25)

2.4

(0.93)

typical

11.9

(0.47)

16.3

(0.62)

Connector Type

3.5 mm (f)

2.92 mm (f)

2.4 mm (f)

12.2 (0.48

9.7 (0.38)

28.4 (1.0)

87300D, 87301B, 87301C

6.4

(0.25)

3 places

50.8

(2.00)

6.4

(0.25)

11.9

(0.47)

16.5

(0.65)

10.2

(0.40)

5.1

(0.20)

9.7

(0.38)

31.8

(1.25)

5.8(0.23)

4-40 UNC-2B thd X 1/4 deep

4 places

Connector Type

2.4 mm (f)

2.92 mm (f)

9.7(0.38)

87301 D,E

6.4

(0.25)typical

4-40 UNC-2B thd X 1/4 deep

4 holes this side & far side

119.4

(4.700)

31.8

(1.250)

9.7(0.38)

7.6

(0.300)

34.3

(1.350)

50.8

(2.000)

13.2

(0.52)

6.6

(0.26) typical

87300D

Dimensions are in millimeters (inches) nominal unless otherwise specified

Measurement system

8350 83594A

ALC

input

out

Test

interface

Switch

matrix

8474C

87300C

DUT

Figure 1

Measurement system

Signal

analyzer

Power

meter Microwave

counter

Switch matrix test interface

87300C

To auxiliary

connections

RF In

Figure 2

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Product specifications and descriptions in

this document subject to change without notice.

Printed in U.S.A. March 23, 2004

5091-6188E

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