Device Overview

General Description

The C20-0R518 is a broadband 0.5-18 GHz, 20 dB directional coupler. The multisection tri-plate stripline design exhibits excellent coupling flatness and VSWR at all ports. Custom designs are also available; contact the factory for details.

Photo of C20-0R518

Features

  • Broadband Performance
  • High Directivity
  • Low VSWR

Applications

N/A

Functional Block Diagram

Block Diagram

Part Ordering Options

Part NumberDescriptionConnectorsGreen StatusProduct LifecycleExport Classification
C20-0R518DIRECTIONAL COUPLERStandard

REACH

RoHS

ReleasedEAR99

Table Of Contents

Revision History

Revision CodeRevision DateComment
D2020-04-01Updated Direct Line IL specs

Rev: D | Copyright © 2020 Marki Microwave LLC.

2

Specifications

Absolute Maximum Ratings

ParameterMaximum RatingUnit
RF Power Handling 50W
Minimum Operating Temperature -55°C
Maximum Operating Temperature 100°C
Maximum Storage Temperature 125°C
Minimum Storage Temperature -65°C

Package Information

ParameterDetailsRating
Weight-90g
Dimensions-142.24 x 13.97 mm

Rev: D | Copyright © 2020 Marki Microwave LLC.

3

Electrical Specifications

The electrical specifications apply at TA=+25°C in a 50Ω system

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
Amplitude Flatness 1-0.5 18-0.752dB
Directivity -0.5 121522-dB
Directivity -12 181216-dB
Direct Line Insertion Loss DC-18
- ---1.4dB
Mean Coupling -0.5 18-20-dB
VSWR -0.5 18-1.21.35

[1] Deviation from average coupling.

Rev: D | Copyright © 2020 Marki Microwave LLC.

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Typical Performance Plots

Direct line insertion loss graph for C20-0R518
Typical port return loss graph for C20-0R518
Coupled port power graph for C20-0R518
Typical directivity graph for C20-0R518

Rev: D | Copyright © 2020 Marki Microwave LLC.

5

Mechanical Data

Rev: D | Copyright © 2020 Marki Microwave LLC.

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