Rev: - | Copyright © 2025 Marki Microwave LLC.

General Description

The C20-1200WG is a WR-12 20 dB waveguide coupler featuring high 38 dB directivity over a 60-90GHz operational bandwidth. These waveguide components are built with high precision and then gold plated for high corrosion resistance. They have very low 0.8 dB insertion loss and excellent 34 dB return loss. Manufactured to rigid specifications, these transmission line components provide minimum detrimental effects on overall system VSWR.

Features

  • 19 dB Coupling
  • Low 0.8 dB Insertion Loss
  • High 38 dB Directivity
  • WR-12 Waveguide
  • UG-387/U Input and Output Flanges

Functional Block Diagram

Block Diagram

Electrical Performance Summary

ParameterTypUnit
Frequency Range60 to 90GHz
Directivity 38dB

Summary only – refer to the Electrical Specifications, Absolute Maximum Ratings, and Recommended Operating Range tables for complete details.

Part Ordering Options

Part NumberDescriptionPackageGreen StatusProduct LifecycleExport Classification
C20-1200WGWR-12 High Directivity Waveguide Coupler, 20dB, 60-90GHzWR-12

RoHS

ReleasedEAR99

Table Of Contents

Typical Performance Plots

Direct Line Insertion Loss (dB) graph for C20-1200WG
Return Loss (dB) graph for C20-1200WG
Coupling Ratio (dB) graph for C20-1200WG
Directivity (dB) graph for C20-1200WG

Specifications

Electrical Specifications

Min and Max limits are guaranteed at Ta = 25°C

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
Frequency Range-60 90---GHz
Coupling Ratio Configuration A, Temp = 25°C
60 90-18.9-dB
Direct Line Insertion Loss Configuration A, Temp = 25°C
60 90-0.8-dB
Directivity Configuration A, Temp = 25°C
60 90-38-dB
Coupled Port Return Loss Configuration A, Temp = 25°C
60 90-39-dB
Frequency Sensitivity Configuration A, Temp = 25°C
60 90-0.76-dB
Amplitude Flatness 1Configuration A, Temp = 25°C
60 90-0.19-dB

[1] Amplitude Flatness = Median value of ABS(Measured Coupling Power – Average Coupling Factor)

Absolute Maximum Ratings

The Absolute Maximum Ratings indicate limits beyond which damage may occur to the device. If these limits are exceeded, the device may be inoperable or have a reduced lifetime.

ParameterMaximum RatingUnit
Maximum Operating Temperature 85°C
Maximum Storage Temperature 125°C
Minimum Operating Temperature -40°C
Minimum Storage Temperature -55°C

Package Information

ParameterDetailsRating
ESDThis device is not sensitive to ESD.N/A
Dimensions-85.85 x 30.48 x 21.96 mm

Port Configuration and Functions

Port Diagram

Diagram of the port configuration for C20-1200WG

Port Functions

PortFunctionConnector TypeDescriptionDC Equivalent
Circuit
Port 1Input WR-12-UG-387/U--
Port 2Coupled WR-12-UG-387/U-20dB coupled output port-
Port 3Output WR-12-UG-387/U--

Mechanical Data

Outline Drawing

Download : Outline 2D Drawing Outline 3D Drawing Outline 3D STP

Outline Drawing

Revision History

Revision CodeRevision DateComment
-2025-08-11Initial Release

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