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-2R58R5CH

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
MQH-2R58R5CHMMIC 2.5-8.5GHz Quadrature HybridCH-

REACH

RoHS

ReleasedEAR99

Table Of Contents

Revision History

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

Rev: - | Copyright © 2018 Marki Microwave LLC.

2

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-2R58R5CH

Port Functions

Configuration A

PortFunctionDescriptionDC Equivalent
Circuit
PadGround CH package ground path is provided through the substrate and ground bond pads.Equivalent circuit for the Ground
Pad 1Input Port 1 is DC short to port 2 and open to ground.Equivalent circuit for the Input
Pad 20° Output Port 2 is DC short to port 1 and open to ground.Equivalent circuit for the 0° Output
Pad 390° Output Port 3 is DC short to port 4 and open to ground.Equivalent circuit for the 90° Output
Pad 4Isolated Port 4 is DC short to port 3 and open to ground.Equivalent circuit for the Isolated

Rev: - | Copyright © 2018 Marki Microwave LLC.

3

Configuration B

PortFunctionDescriptionDC Equivalent
Circuit
PadGround CH package ground path is provided through the substrate and ground bond pads.Equivalent circuit for the Ground
Pad 10° Output Port 1 is DC short to port 2 and open to ground.Equivalent circuit for the 0° Output
Pad 2Input Port 2 is DC short to port 1 and open to ground.Equivalent circuit for the Input
Pad 3Isolated Port 3 is DC short to port 4 and open to ground.Equivalent circuit for the Isolated
Pad 490° Output Port 4 is DC short to port 3 and open to ground.Equivalent circuit for the 90° Output

Rev: - | Copyright © 2018 Marki Microwave LLC.

4

Configuration C

PortFunctionDescriptionDC Equivalent
Circuit
PadGround CH package ground path is provided through the substrate and ground bond pads.Equivalent circuit for the Ground
Pad 190° Output Port 1 is DC short to port 2 and open to ground.Equivalent circuit for the 90° Output
Pad 2Isolated Port 2 is DC short to port 1 and open to ground.Equivalent circuit for the Isolated
Pad 3Input Port 3 is DC short to port 4 and open to ground.Equivalent circuit for the Input
Pad 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.

5

Configuration D

PortFunctionDescriptionDC Equivalent
Circuit
PadGround CH package ground path is provided through the substrate and ground bond pads.Equivalent circuit for the Ground
Pad 1Isolated Port 1 is DC short to port 2 and open to ground.Equivalent circuit for the Isolated
Pad 290° Output Port 2 is DC short to port 1 and open to ground.Equivalent circuit for the 90° Output
Pad 30° Output Port 3 is DC short to port 4 and open to ground.Equivalent circuit for the 0° Output
Pad 4Input Port 4 is DC short to port 3 and open to ground.Equivalent circuit for the Input

Rev: - | Copyright © 2018 Marki Microwave LLC.

6

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

Package Information

ParameterDetailsRating
Dimensions-3.75 x 2.50 mm

Rev: - | Copyright © 2018 Marki Microwave LLC.

7

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-

Quadrature hybrid is reciprocal. Reverse measurement is equivalent to forward measurement.

Rev: - | Copyright © 2018 Marki Microwave LLC.

8

Typical Performance Plots

Insertion Loss, Port 1 Input (dB) graph for MQH-2R58R5CH
Return Loss (dB) graph for MQH-2R58R5CH
Isolation (dB) graph for MQH-2R58R5CH
Amplitude Balance (dB) graph for MQH-2R58R5CH
Phase Balance (dB) graph for MQH-2R58R5CH
Phase Balance, Five Unit Spread (dB) graph for MQH-2R58R5CH

Rev: - | Copyright © 2018 Marki Microwave LLC.

9

MQH-2R58R5UB - Typical Performance Plots

Performance plots for the connectorized module are shown for measurements where directly probed measurements of the die are unavailable. Note that the following measurements include losses from connectors and microstrip traces.

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

Rev: - | Copyright © 2018 Marki Microwave LLC.

10

Mechanical Data

Outline Drawing

Download : Outline 2D Drawing

Outline Drawing

Rev: - | Copyright © 2018 Marki Microwave LLC.

11