Device Overview

General Description

Available in either a connectorized or miniature surface mount package (0.240 inch x 0.150 inch), the DPX-M50 is a low cost, high performance diplexer. The unique design offers high pass/low pass signal routing/multiplexing with excellent isolation. Passband insertion loss is less than 1.2 dB with rejection typically exceeding 25 dB. Besides being ideal for transmitter/receiver applications, the DPX-M50 can also be used as an excellent non-reflective low pass (or high pass) filter for systems requiring broadband 50Ω impedance match (such as mixers).

Photo of DPX-M50-2

Features

  • Low Insertion Loss
  • Superior Repeatability
  • Low Profile Miniaturized, Reflow Solderable Package Option
  • User defined cross over frequencies available

Applications

  • Reflectionless Filter Applications
  • RF Transceivers

Functional Block Diagram

Block Diagram

Part Ordering Options

Part NumberDescriptionPackageGreen StatusProduct LifecycleExport Classification
DPX-M50-1Diplexer DPX

RoHS

REACH

ReleasedEAR99
DPX-M50-2DiplexerDPX

RoHS

REACH

ReleasedEAR99

Table Of Contents

Revision History

Revision CodeRevision DateComment
-2013-01-01Datasheet initial Release
A2019-10-01Maximum DC Voltage Rating Added

Rev: A | Copyright © 2013, 2019 Marki Microwave LLC.

2

Port Configuration and Functions

Port Diagram

Diagram of the port configuration for DPX-M50-2

Port Functions

PortFunctionDescriptionDC Equivalent
Circuit
GNDGround DPX package ground is provided through the substrate and ground bond pads.Equivalent circuit for the Ground
Pin 1Common/Input Pin 2 is DC open to Pin 1 and short to Pin 3.Equivalent circuit for the Common/Input
Pin 2RF High Band Pin 1 is DC open to Pin 2 and Pin 3.Equivalent circuit for the RF High Band
Pin 3RF Low Band Pin 3 is DC open to Pin 1 and short to Pin 2.Equivalent circuit for the RF Low Band

Rev: A | Copyright © 2013, 2019 Marki Microwave LLC.

3

Specifications

Package Information

ParameterDetailsRating
Dimensions-3.81 x 6.10 mm
Moisture Sensitivity Level-MSL 3

Rev: A | Copyright © 2013, 2019 Marki Microwave LLC.

4

Electrical Specifications

Specifications guaranteed from -55 to +100°C, measured in a 50Ω system.

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
1 dBc High Passband -- -0.07-10GHz
1 dBc High Passband -- -0.07-10GHz
1 dBc Low Passband -- -0-0.035GHz
30 dBc Low Pass Rejection Point <0.015 GHz
- 0.0152535-dB
30 dBc Low Pass Rejection Point <0.035 GHz
- 0.035-20-dB
Common Port Return Loss 0.07 to 10 GHz
0.07 10-18-dB
Common Port Return Loss DC to 0.035 GHz
0 0.035-18-dB
Cross Over Frequency 0.05 GHz
0.05 0.05-5-%
DC Voltage -- ---25V
High Pass Filter, Pass Band Insertion Loss 0.07 - 10 GHz
0.07 10-0.714dB
High Pass Filter, Pass Band Return Loss 0.07 - 10 GHz
0.07 10-18-dB
Isolation <0.03 GHz
- 0.031424-dB
Isolation 0.075 - 10 GHz
0.075 101424-dB
Low Pass Filter, Pass Band Insertion Loss DC to 0.035 GHz
0 0.035-0.71.4dB
Low Pass Filter, Pass Band Return Loss DC to 0.035 GHz
0 0.035-18-dB
Low Pass Filter, Stop Band Rejection 0.07 - 3 GHz
0.07 3-24-dB
Low Pass Filter, Stop Band Rejection 3 - 10 GHz
3 102030-dB
RF Power -- ---1W

Rev: A | Copyright © 2013, 2019 Marki Microwave LLC.

5

Typical Performance Plots from DC - 1GHz

Insertion Loss (dB) graph for DPX-M50-2
Return Loss (dB) graph for DPX-M50-2
Isolation (dB) graph for DPX-M50-2
Common Port Return Loss (dB) graph for DPX-M50-2

Rev: A | Copyright © 2013, 2019 Marki Microwave LLC.

6

Typical Performance Plots from 1-10GHz

Insertion Loss (dB) graph for DPX-M50-2
Return Loss (dB) graph for DPX-M50-2
Isolation (dB) graph for DPX-M50-2
Common Port Return Loss (dB) graph for DPX-M50-2

Rev: A | Copyright © 2013, 2019 Marki Microwave LLC.

7

Mechanical Data

Rev: A | Copyright © 2013, 2019 Marki Microwave LLC.

8

Rev: A | Copyright © 2013, 2019 Marki Microwave LLC.

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