Device Overview

General Description

The HLM-20BH is a wide bandwidth GaAs Schottky diode signal limiter featuring high 30 dBm IP3 and high 4 W power handling over a broad DC-20 GHz bandwidth. It offers low 1 dB insertion loss and excellent return 15 dB loss from DC through K band and has a typical 1 dB compression point of 15 dBm. Its high power handling makes it ideal for protecting sensitive components and for applications requiring high linearity.

Photo of HLM-20BH

Features

  • Insertion Loss, 0.9 dB @ 10 GHz Typical
  • Power Handling, 4 W CW @ 10 GHz
  • Flat Leakage, +14 to +17 dBm Typical
  • P1dB, 15 dBm Typical

Applications

  • RF Transceivers
  • Test and Measurement Equipment
  • SATCOM

Functional Block Diagram

Block Diagram

Part Ordering Options

Part NumberDescriptionPackageConnectorsGreen StatusProduct LifecycleExport Classification
HLM-20BHHigh Power 20GHz LimiterBH-

REACH

RoHS

ReleasedEAR99

Table Of Contents

Revision History

Revision CodeRevision DateComment
-2025-12-01Initial Release

Rev: - | Copyright © 2025 Marki Microwave LLC.

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Port Configuration and Functions

Port Diagram

Diagram of the port configuration for HLM-20BH

Port Functions

PortFunctionConnector TypeDescriptionDC Equivalent
Circuit
GNDGround -BH package ground is provided through metal housing and outer coax conductor.Equivalent circuit for the Ground
INInput 2.92FThe input port is diode connected for the BH package.Equivalent circuit for the Input
OUTOutput 2.92MThe output port is diode connected for the BH package.Equivalent circuit for the Output

Rev: - | Copyright © 2025 Marki Microwave LLC.

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Specifications

Absolute Maximum Ratings

ParameterMaximum RatingUnit
Maximum Operating Temperature 100°C
Maximum Storage Temperature 125°C
Minimum Operating Temperature -55°C
Minimum Storage Temperature -65°C
RF Power Handling , Average 14W

RF Power Handling represents an instantaneous, catastrophic limit and it isn’t derated for frequency, temperature, pulse conditions, or unit to unit variation

[1] CW @ 10 GHz, 25°C

Package Information

ParameterDetailsRating
WeightPackage name: BH9.2g
Dimensions-30.1 x 9.5 mm

Rev: - | Copyright © 2025 Marki Microwave LLC.

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Electrical Specifications

The electrical specifications apply at TA=+25°C in a 50Ω system. Typical data shown is for the connectorized BH-package limiter unless otherwise specified.

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
Insertion Loss -0 20-1-dB
Return Loss -0 20-15-dB
Flat Leakage 1 GHz CW
- --17-dBm
Flat Leakage 5 GHz CW
- --15.3-dBm
Flat Leakage 10 GHz CW
- --15-dBm
Flat Leakage 14 GHz CW
- --15-dBm
Flat Leakage 18 GHz CW
- --14.3-dBm
Flat Leakage 20 GHz CW
- --13.7-dBm
Input IP3 -5dBm Tone Powers at 1 MHz Spacing
0 20-30-dBm

Rev: - | Copyright © 2025 Marki Microwave LLC.

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Typical Performance Plots

Insertion Loss (dB) graph for HLM-20BH
Return Loss graph for HLM-20BH
Pout (dBm) vs. Pin (dBm) graph for HLM-20BH
Output Power vs. Input Power, Extended Power Range (dBm) graph for HLM-20BH
Insertion Loss, Output Power vs. Input Power @ 25GHz graph for HLM-20BH
Insertion Loss, Output Power vs. Input Power @ 25GHz graph for HLM-20BH
Insertion Loss, Output Power vs. Input Power @ 20GHz graph for HLM-20BH
Insertion Loss, Output Power vs. Input Power @ 14GHz graph for HLM-20BH

Rev: - | Copyright © 2025 Marki Microwave LLC.

6

Insertion Loss, Output Power vs. Input Power @ 20GHz graph for HLM-20BH
Insertion Loss, Output Power vs. Input Power @ 20GHz graph for HLM-20BH
Input P1dB (dBm) graph for HLM-20BH
P0.1dB Compression Point (dBm) graph for HLM-20BH
Input IP3 vs Frequency graph for HLM-20BH
Harmonic Suppression vs Input Power graph for HLM-20BH
3rd Harmonic Suppression vs Frequency graph for HLM-20BH
5th Harmonic Suppression vs Frequency graph for HLM-20BH

Rev: - | Copyright © 2025 Marki Microwave LLC.

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Mechanical Data

Outline Drawing

Download : Outline 2D Drawing

Outline Drawing

Rev: - | Copyright © 2025 Marki Microwave LLC.

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