Rev: A | Copyright © 2025 - 2026 Marki Microwave LLC.

General Description

The MPD4-1260CSP2 is a small footprint MMIC 12-60 GHz 4-Way power divider/power splitter featuring high 29 dB isolation and low 1.1 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 S5P file taken from measured production units. The 2.5 mm CSP2 package enables extreme miniaturization of SMT footprint making the MPD4-1260CSP2 ideal for applications prioritizing low SWaP.

Features

  • 4-way splitter or combiner in a compact 2.5mm package
  • Side ports
  • Low 1.1 dB insertion loss
  • High 29 dB isolation
  • Excellent 0.3 dB amplitude and 1.9° phase balance
  • This product embodies Marki Microwave's U.S. Pat. 11,869,858

Functional Block Diagram

Block Diagram
Photo of MPD4-1260CSP2

Electrical Performance Summary

ParameterTypUnit
Frequency Range12 to 60GHz
Phase Balance 1.9°
Excess Insertion Loss 1.1dB
No. Ways Wilkinson 1:4-
RF Power Handling as a Power Divider 10W
Amplitude Balance 0.25dB
Isolation 29dB

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
MPD4-1260CSP212 - 60 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter CSP2

REACH

RoHS

ReleasedEAR99
EVB-MPD4-1260Evaluation Board, 12 - 60 GHz MMIC 4-Way Wilkinson Power Divider/Power SplitterEVB

RoHS

REACH

ReleasedEAR99

Table Of Contents

Typical Performance Plots

Insertion Loss (dB) graph for MPD4-1260CSP2
Blank graph for MPD4-1260CSP2
Common Port Return Loss (dB) graph for MPD4-1260CSP2
Output Return Loss (dB) graph for MPD4-1260CSP2
Amplitude Balance (dB) graph for MPD4-1260CSP2
Amplitude Balance (dB) graph for MPD4-1260CSP2
Isolation (dB) graph for MPD4-1260CSP2
Isolation (dB) graph for MPD4-1260CSP2
Phase Balance (°) graph for MPD4-1260CSP2
Phase Balance (°) graph for MPD4-1260CSP2

Measured data is de-embedded from fixture using automatic fixture removal (AFR). See Footprint notes for trace information.

Specifications

Electrical Specifications

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

ParameterPort ConfigurationTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
Frequency Range--12 60---GHz
Amplitude Balance -Adjacent Ports
12 60-0.36-dB
Amplitude Balance -Non-Adjacent Ports
12 60-0.25-dB
Common Port Return Loss --12 60-18-dB
Excess Insertion Loss 1--12 60-1.1-dB
Impedance --- --50-Ω
Isolation -Adjacent Ports
12 60-24-dB
Isolation -Non-Adjacent Ports
12 60-29-dB
Nominal Phase Shift --12 60-0-°
Nominal Power Splitting --12 60-6-dB
Output Return Loss --12 60-18-dB
Phase Balance -Adjacent Ports
12 60-2.2-°
Phase Balance -Non-Adjacent Ports
12 60-1.9-°

[1] Excess Insertion Loss is loss in addition to power splitting loss, calculated as (Common Port to Output Port Insertion Loss) – (Power splitting loss of 6 dB)

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 10W
RF Power Handling as a Power Combiner 1W

Package Information

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

Port Configuration and Functions

Port Diagram

A bottom-up view of the MPD4-1260CSP2 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 MPD4-1260CSP2

Port Functions

Configuration Combiner

PortFunctionDescriptionDC Equivalent
Circuit
Ground PaddleGnd Ground paddle should be connected to RF ground-
Pin 1RF Output Pin 1 is the input pin. It is DC short to the other 4 pins and open to ground.-
Pin 2Combiner Input 1 Pin 2 is an input pin. It is DC short to the other 4 pins and open to ground.-
Pin 3Combiner Input 2 Pin 3 is an input pin. It is DC short to the other 4 pins and open to ground.-
Pin 4Combiner Input 3 Pin 4 is an input pin. It is DC short to the other 4 pins and open to ground.-
Pin 5Combiner Input 4 Pin 5 is an input pin. It is DC short to the other 4 pins and open to ground.-

Configuration Divider

PortFunctionDescriptionDC Equivalent
Circuit
Ground PaddleGnd Ground paddle should be connected to RF groundEquivalent circuit for the Gnd
Pin 1RF Input Pin 1 is the input pin. It is DC short to the other 4 pins and open to ground.Equivalent circuit for the RF Input
Pin 2Divider Output 1 Pin 2 is an input pin. It is DC short to the other 4 pins and open to ground.Equivalent circuit for the Divider Output 1
Pin 3Divider Output 2 Pin 3 is an output pin. It is DC short to the other 4 pins and open to ground.Equivalent circuit for the Divider Output 2
Pin 4Divided Output 3 Pin 4 is an output pin. It is DC short to the other 4 pins and open to ground.Equivalent circuit for the Divided Output 3
Pin 5Divider Output 4 Pin 5 is an output pin. It is DC short to the other 4 pins and open to ground.Equivalent circuit for the Divider Output 4

Mechanical Data

Outline Drawing

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

Outline Drawing

Evaluation Board

Evaluation Board - Outline Drawing

Outline Drawing

Revision History

Revision CodeRevision DateComment
-2025-10-03Initial Release
A2026-02-25Power Handling Updated

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