Device Overview

General Description

The MPD-0422FCSP2 is a small footprint MMIC 4-22 GHz 2-Way power divider/power splitter featuring high 24 dB isolation and low 0.7 dB insertion loss in our compact CSP2 chip scale package. It is much smaller than a printed PCB Wilkinson Power Divider/Combiner. It can be used as an equal amplitude/phase power splitter or a power combiner with excellent isolation. Tight fabrication tolerances result in less unit-to-unit variation than traditional power divider technologies, allowing for accurate simulations using the provided S3P file taken from measured production units. The MPD-0422FCSP2 features front port outputs opposite to the common port. For side port outputs, refer to the MPD-0422SCSP2. The 2.5 mm CSP2 package enables extreme miniaturization of SMT footprint making the MPD-0422FCSP2 ideal for applications prioritizing low SWaP.

Photo of MPD-0422FCSP2

Features

  • 2-way splitter or combiner in a compact 2.5mm package
  • Front ports
  • Low 0.7 dB typical insertion loss
  • High 24 dB isolation
  • Excellent 0.1 dB amplitude and 0.15° phase balance
  • This product embodies Marki Microwave's U.S. Pat. 11,869,858

Applications

  • Test Equipment
  • Electronic Warfare
  • Radar and satellite communications
  • High Channel Count Systems

Functional Block Diagram

Block Diagram

Part Ordering Options

Part NumberDescriptionPackageGreen StatusProduct LifecycleExport Classification
MPD-0422FCSP24 - 22 GHz MMIC 2-Way Wilkinson Power Divider/Power Splitter, Front PortsCSP2

REACH

RoHS

ReleasedEAR99
EVB-MPD-0422FEvaluation Board, 4 - 22 GHz MMIC 2-Way Wilkinson Power Divider/Power Splitter, Front PortsEVB

RoHS

REACH

ReleasedEAR99

Table Of Contents

Revision History

Revision CodeRevision DateComment
-2024-09-09Initial Release
A2025-04-28Updated Moisture Sensitivity from MSL3 to MSL1
B2025-05-07Power Handling Added
C2025-12-17Power Handling Updated

Rev: C | Copyright © 2024 - 2025 Marki Microwave LLC.

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Port Configuration and Functions

Port Diagram

A bottom-up view of the MPD-0422FCSP2 package outline drawing is shown below. The MMIC Power dividers are passive reciprocal devices allowing either power splitting or power combining.

Diagram of the port configuration for MPD-0422FCSP2

Port Functions

PortFunctionDescriptionDC Equivalent
Circuit
Ground PaddleGnd Ground paddle should be connected to RF groundEquivalent circuit for the Gnd
Pin 1Common Pin 1 is the common input/output pin. It is DC short to Pin 3 and Pin 4 and open to ground.Equivalent circuit for the Common
Pin 3Input/Output 1 Pin 3 is an input/output pin. It is DC short to the common and Pin 4 and open to ground.Equivalent circuit for the Input/Output 1
Pin 4Input/Output 2 Pin 4 is an input/output pin. It is DC short to the common and Pin 3 and open to ground.Equivalent circuit for the Input/Output 2

Rev: C | Copyright © 2024 - 2025 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
DC Current 40mA
Maximum Operating Temperature 100°C
Maximum Storage Temperature 125°C
Minimum Operating Temperature -55°C
Minimum Storage Temperature -65°C
RF Power Handling as a Power Divider 110W

[1] Power handling was tested increasing RF power at 12 GHz

Package Information

ParameterDetailsRating
Dimensions-2.50 x 2.50 mm
Moisture Sensitivity Level-MSL 1

Rev: C | Copyright © 2024 - 2025 Marki Microwave LLC.

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Electrical Specifications

The electrical specifications apply at TA=+25°C in a 50Ω system. Min and Max limits are guaranteed at TA=+25°C.

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
Amplitude Balance -4 22-0.12-dB
Common Port Return Loss -4 22-23-dB
Excess Insertion Loss 1-4 18-0.66-dB
Excess Insertion Loss 2-18 22-1.04-dB
Impedance -4 22-50-Ω
Isolation -6 22-24-dB
Isolation -4 6-17-dB
Nominal Phase Shift -4 22-0-°
Nominal Power Splitting -4 22-3-dB
Output Return Loss -4 22-22-dB
Phase Balance -4 22-0.15-°

[1][2] Excess Insertion Loss is loss in addition to power splitting loss, calculated as (Common Port to Output Port Insertion Loss) – (Power splitting loss of 3 dB)

Rev: C | Copyright © 2024 - 2025 Marki Microwave LLC.

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Typical Performance Plots

Insertion Loss (dB) graph for MPD-0422FCSP2
Return Loss (dB) graph for MPD-0422FCSP2
Amplitude Balance (dB) graph for MPD-0422FCSP2
Phase Balance (°) graph for MPD-0422FCSP2
Isolation (dB) graph for MPD-0422FCSP2

Measured data is de-embedded from fixture using automatic fixture removal (AFR).

Rev: C | Copyright © 2024 - 2025 Marki Microwave LLC.

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Mechanical Data

Rev: C | Copyright © 2024 - 2025 Marki Microwave LLC.

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Rev: C | Copyright © 2024 - 2025 Marki Microwave LLC.

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Evaluation Board - Outline Drawing

Outline Drawing

Rev: C | Copyright © 2024 - 2025 Marki Microwave LLC.

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