Device Overview

General Description

The MQH-2R58R5 is a MMIC 2.5 GHz – 8.5 GHz quadrature (90°) hybrid. Wire bondable 50Ω terminations are available on-chip. Passive GaAs MMIC technology allows production of smaller constructions that replace larger form factor circuit board constructions. Tight fabrication tolerances allow for less unit to unit variation than traditional quadrature hybrid technologies. The MQH-2R58R5 is available as a wire bondable chip or connectorized module. Low variation allows for accurate simulations using the provided S4P file taken from measured production units. Applications include single sideband upconverters, image rejection downconverters, IQ modulators, balanced amplifiers, microwave correlators, and microwave Butler matrices.

Photo of MQH-2R58R5UB

Features

  • Designed for S/C-band applications
  • Excellent amplitude and phase balance
  • High isolation
  • Low insertion loss
  • On-chip 50Ω load terminations

Applications

  • Single Sideband Upconverters
  • Image Rejection Downconverters
  • IQ Modulators
  • Balanced Amplifiers
  • Microwave Correlators
  • Microwave Butler Matrices

Functional Block Diagram

Block Diagram

Part Ordering Options

Part NumberDescriptionPackageConnectorsGreen StatusProduct LifecycleExport Classification
MQH-2R58R5UBMMIC 2.5-8.5GHz Quadrature HybridUBStandard

REACH

RoHS

ReleasedEAR99

Table Of Contents

Revision History

Revision CodeRevision DateComment
-2018-08-01Datasheet Initial Release

Rev: - | Copyright © 2018 Marki Microwave LLC.

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Port Configuration and Functions

Port Diagram

A top-down view of the MQH-2R58R5CH package outline drawing is shown below. This MMIC quadrature hybrid is a passive reciprocal device allowing any port to be used as the input. Ports 1 – 4 correspond to the UB package designation.

Diagram of the port configuration for MQH-2R58R5UB

Port Functions

Configuration A

PortFunctionConnector TypeDescriptionDC Equivalent
Circuit
GNDGround -Package ground provided through metal housing and outer coax conductor.Equivalent circuit for the Ground
Port 1Input SMAFPort 1 is DC short to port 2 and open to ground.Equivalent circuit for the Input
Port 20° Output SMAFPort 2 is DC short to port 1 and open to ground.Equivalent circuit for the 0° Output
Port 390° Output SMAFPort 3 is DC short to port 4 and open to ground.Equivalent circuit for the 90° Output
Port 4Isolated SMAFPort 4 is DC short to port 3 and open to ground.Equivalent circuit for the Isolated

Rev: - | Copyright © 2018 Marki Microwave LLC.

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Configuration B

PortFunctionConnector TypeDescriptionDC Equivalent
Circuit
GNDGround -Package ground provided through metal housing and outer coax conductor.Equivalent circuit for the Ground
Port 10° Output SMAFPort 1 is DC short to port 2 and open to ground.Equivalent circuit for the 0° Output
Port 2Input SMAFPort 2 is DC short to port 1 and open to ground.Equivalent circuit for the Input
Port 3Isolated SMAFPort 3 is DC short to port 4 and open to ground.Equivalent circuit for the Isolated
Port 490° Output SMAFPort 4 is DC short to port 3 and open to ground.Equivalent circuit for the 90° Output

Rev: - | Copyright © 2018 Marki Microwave LLC.

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Configuration C

PortFunctionConnector TypeDescriptionDC Equivalent
Circuit
GNDGround -Package ground provided through metal housing and outer coax conductor.Equivalent circuit for the Ground
Port 190° Output SMAFPort 1 is DC short to port 2 and open to ground.Equivalent circuit for the 90° Output
Port 2Isolated SMAFPort 2 is DC short to port 1 and open to ground.Equivalent circuit for the Isolated
Port 3Input SMAFPort 3 is DC short to port 4 and open to ground.Equivalent circuit for the Input
Port 40° Output -Port 4 is DC short to port 3 and open to ground.Equivalent circuit for the 0° Output

Rev: - | Copyright © 2018 Marki Microwave LLC.

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Configuration D

PortFunctionConnector TypeDescriptionDC Equivalent
Circuit
GNDGround -Package ground provided through metal housing and outer coax conductor.Equivalent circuit for the Ground
Port 1Isolated SMAFPort 1 is DC short to port 2 and open to ground.Equivalent circuit for the Isolated
Port 290° Output SMAFPort 2 is DC short to port 1 and open to ground.Equivalent circuit for the 90° Output
Port 30° Output SMAFPort 3 is DC short to port 4 and open to ground.Equivalent circuit for the 0° Output
Port 4Input SMAFPort 4 is DC short to port 3 and open to ground.Equivalent circuit for the Input

Rev: - | Copyright © 2018 Marki Microwave LLC.

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Specifications

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 100°C
Maximum Storage Temperature 125°C
Minimum Operating Temperature -55°C
Minimum Storage Temperature -65°C
RF Power Handling 10W

Package Information

ParameterDetailsRating
Dimensions-9.93 x 16.26 mm

Rev: - | Copyright © 2018 Marki Microwave LLC.

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Electrical Specifications

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

ParameterPort ConfigurationTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
Amplitude Balance A-2.5 8.5-0.42dB
Excess Insertion Loss A-2.5 8.5-24dB
Impedance A-2.5 8.5-50-Ω
Isolation A-2.5 8.51423-dB
Mean Coupling A-2.5 8.5-3-dB
Nominal Phase Shift A-2.5 8.5-90-°
Phase Balance A-2.5 8.5-310°
VSWR A-2.5 8.5-1.15-

Rev: - | Copyright © 2018 Marki Microwave LLC.

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Typical Performance Plots

Insertion Loss, Port 1 Input (dB) graph for MQH-2R58R5UB
Return Loss graph for MQH-2R58R5UB
Isolation (dB) graph for MQH-2R58R5UB
Amplitude Balance (dB) graph for MQH-2R58R5UB
Phase Balance (dB) graph for MQH-2R58R5UB
Phase Balance, Five Unit Spread (dB) graph for MQH-2R58R5UB

All measurements taken from a connectorized unit in a 50Ω environment. Phase balance spread is shown due to large performance spread. Minimal variance observed in amplitude balance and insertion loss. Performance spread is related to packaging and bond wire inductance variation. On-chip load was not used when taking measurements.

Rev: - | Copyright © 2018 Marki Microwave LLC.

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Mechanical Data

Rev: - | Copyright © 2018 Marki Microwave LLC.

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