Device Overview

General Description

Available in either a connectorized or miniature surface mount package (0.240 inch x 0.150 inch), the DPX-1 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-1 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 DPXN-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 NumberDescriptionPackageConnectorsGreen StatusProduct LifecycleExport Classification
DPXN-1DiplexerDPXNStandard

Non-RoHS

ReleasedEAR99

Table Of Contents

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Port Configuration and Functions

Port Diagram

Diagram of the port configuration for DPXN-1

Port Functions

PortFunctionConnector TypeDescriptionDC Equivalent
Circuit
GNDGround -DPXN package ground path is provided through the metal housing and outer coax conductor.Equivalent circuit for the Ground
Port 1RF High Band -Port 1 is DC open to Port 2 and Port 3.Equivalent circuit for the RF High Band
Port 2Common/Input -Port 2 is DC open to Port 1 and short to Port 3.Equivalent circuit for the Common/Input
Port 3RF Low Band -Port 3 is DC open to Port 1 and short to Port 2.Equivalent circuit for the RF Low Band

Rev: - | Copyright © 2022 - 2026 Marki Microwave LLC.

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Specifications

Package Information

ParameterDetailsRating
Dimensions-11.94 x 11.94 mm

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Electrical Specifications

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
1 dBc High Passband 1Temp = 25°C
- -0.41--GHz
3 dBc High Passband 2Temp = 25°C
- -0.66--GHz
30 dBc High Pass Rejection Point 3Temp = 25°C
- -0.66--GHz
High Passband Return Loss 4Temp = 25°C
- --19-dB
High Pass Isolation 5Temp = 25°C
- --17-dB
High Pass Group Delay 6Temp = 25°C
- --588-ps
1 dBc Low Passband 7Temp = 25°C
- ---5.00GHz
3 dBc Low Passband 8Temp = 25°C
- ---3.13GHz
30 dBc Low Pass Rejection Point 9Temp = 25°C
- ---3.13GHz
Low Passband Return Loss 10Temp = 25°C
- --13-dB
Low Pass Isolation 11Temp = 25°C
- --22-dB
Low Pass Group Delay 12Temp = 25°C
- --332-ps
Crossover Frequency 13Temp = 25°C
- --1.09-GHz
Common Port Return Loss 14Temp = 25°C
- --15-dB
Impedance 15Temp = 25°C
- --50-Ω
30 dBc Low Pass Rejection Point <0.6 GHz
- 0.62430-dB
30 dBc Low Pass Rejection Point <0.85 GHz
- 0.85-18-dB
Common Port Return Loss <0.85 GHz
- 0.85-20-dB
Common Port Return Loss 1.4 to 5 GHz
1.4 5-15-dB
Cross Over Frequency 1.1 GHz
1.1 1.1-5-%
High Pass Filter, Pass Band Insertion Loss 1.4 to 5 GHz
1.4 5-0.61.2dB
High Pass Filter, Pass Band Return Loss 1.4 to 5 GHz
1.4 5-15-dB
Isolation <0.75 GHz
- 0.751424-dB
Isolation 1.5 to 5 GHz
1.5 51424-dB
Low Pass Filter, Pass Band Insertion Loss DC to 0.85 GHz
0 0.85-0.51dB
Low Pass Filter, Pass Band Return Loss <0.85 GHz
- 0.85-20-dB
Low Pass Filter, Stop Band Rejection 1.4 to 3.3 GHz
1.4 3.3-18-dB
Low Pass Filter, Stop Band Rejection 3.3 to 5 GHz
3.3 51822-dB
RF Power -- ---1W
1 dBc High Passband -- -1.4-5GHz
1 dBc Low Passband -- -0-0.85GHz

Rev: - | Copyright © 2022 - 2026 Marki Microwave LLC.

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[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] No

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Typical Performance

Insertion Loss (dB) graph for DPXN-1
Return Loss (dB) graph for DPXN-1
Non-Adjacent Isolation (dB) graph for DPXN-1
Common Port Return Loss (dB) graph for DPXN-1

Rev: - | Copyright © 2022 - 2026 Marki Microwave LLC.

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Mechanical Data

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