Device Overview

General Description

Available in either a connectorized or miniature surface mount package (0.240 inch x 0.150 inch), the DPX-2 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 dB with rejection typically exceeding 25 dB. Besides being ideal for transmitter/receiver applications, the DPX-2 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-2-1

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-2-22.05GHz DiplexerDPX

RoHS

REACH

ReleasedEAR99
DPX-2-1DiplexerDPX

RoHS

REACH

ReleasedEAR99

Table Of Contents

Revision History

Revision CodeRevision DateComment
-2022-02-11Datasheet Initial Release

Rev: - | Copyright © 2022 Marki Microwave LLC.

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Port Configuration and Functions

Port Diagram

Diagram of the port configuration for DPX-2-1

Port Functions

PortFunctionDescriptionDC Equivalent
Circuit
GNDGround DPX package ground is provided through the substrate and ground bond pads.Equivalent circuit for the Ground
Pin 1RF High Band Pin 1 is DC open to Pin 2 and Pin 3.Equivalent circuit for the RF High Band
Pin 2Common/Input Pin 2 is DC open to Pin 1 and short to Pin 3.Equivalent circuit for the Common/Input
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: - | Copyright © 2022 Marki Microwave LLC.

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Specifications

Package Information

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

Rev: - | Copyright © 2022 Marki Microwave LLC.

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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 Temp = 25°C
- -1.86--GHz
3 dBc High Passband Temp = 25°C
- -1.73--GHz
30 dBc High Pass Rejection Point Temp = 25°C
- -0.78--GHz
High Passband Return Loss Temp = 25°C
- --5-dB
High Pass Isolation Temp = 25°C
- --4-dB
High Pass Group Delay Temp = 25°C
- --574-ps
1 dBc Low Passband Temp = 25°C
- ---7.00GHz
3 dBc Low Passband Temp = 25°C
- ---4.67GHz
30 dBc Low Pass Rejection Point Temp = 25°C
- ---4.67GHz
Low Passband Return Loss Temp = 25°C
- --16-dB
Low Pass Isolation Temp = 25°C
- --26-dB
Low Pass Group Delay Temp = 25°C
- --115-ps
Crossover Frequency Temp = 25°C
- --0.47-GHz
Common Port Return Loss Temp = 25°C
- --12-dB
Impedance Temp = 25°C
- --50-Ω
30 dBc Low Pass Rejection Point <1.5GHz
- 1.5-15-dB
30 dBc Low Pass Rejection Point <1GHz
- 12530-dB
Common Port Return Loss <1.5GHz
- 1.5-15-dB
Common Port Return Loss -2.7 7-15-dB
Cross Over Frequency 2.05 GHz
2.05 2.05-5-%
High Pass Filter, Pass Band Insertion Loss -2.7 7-0.61.2dB
High Pass Filter, Pass Band Return Loss <1.5GHz
- 1.5-15-dB
Isolation <1.4GHz
- 1.41425-dB
Isolation -2.9 71425-dB
Low Pass Filter, Pass Band Insertion Loss -0 1.5-0.61.2dB
Low Pass Filter, Pass Band Return Loss <1.5 GHz
- 1.5-15-dB
Low Pass Filter, Stop Band Rejection -3.5 72025-dB
Low Pass Filter, Stop Band Rejection -2.7 3.5-15-dB
RF Power -- ---1W
1 dBc High Passband -- -2.7-7GHz
1 dBc Low Passband -- -0-1.5GHz

Rev: - | Copyright © 2022 Marki Microwave LLC.

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Rev: - | Copyright © 2022 Marki Microwave LLC.

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Typical Performance Plots

Insertion Loss (dB) graph for DPX-2-1
Return Loss (dB) graph for DPX-2-1
Isolation (dB) graph for DPX-2-1
Common Port Return Loss (dB) graph for DPX-2-1

Rev: - | Copyright © 2022 Marki Microwave LLC.

7

Application Circuit

Application Circuit for DPX-2-1

Rev: - | Copyright © 2022 Marki Microwave LLC.

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Mechanical Data

Rev: - | Copyright © 2022 Marki Microwave LLC.

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Rev: - | Copyright © 2022 Marki Microwave LLC.

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