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Typical Microstrip Isolator

S Band, C Band, X Band, Ku Band, K Band, Ka Band (2GHz-40GHz)

  • The primary advantage of microstrip Isolators is their compact size, although they have a lower power handling capacity compared to drop-in coaxial waveguide Isolator.
  • Customization of frequency bands, dimensions and ports is available according to your requirements.
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Typical Microstrip Isolator

Key Features & Advantages

  • High Performance Isolation & Low Insertion Loss: Delivers >20 dB isolation to suppress reverse signals and maintain source stability, while keeping forward-path insertion loss below 0.5 dB to minimize signal loss.
  • Compact & Lightweight Design: Based on a planar microstrip circuit structure, removing bulky metal cavities found in traditional waveguide isolators. This achieves a smaller footprint and lighter weight, well suited for modern electronic miniaturization and integration needs.
  • High Power Capacity & Excellent Stability: Uses high-quality ferrite materials and advanced thermal management to support high average and peak power. Delivers stable performance across a wide temperature range, ensuring excellent thermal stability and long-term reliability.
  • Broadband Operation: Covers frequency bands from hundreds of MHz to tens of GHz, supporting mainstream wireless, satellite, and radar applications across diverse requirements.

Typical Applications

  • Power Amplifier Protection: Placed after the power amplifier, it prevents reflected power caused by antenna impedance mismatch from damaging expensive amplifier transistors.
  • Frequency Source Stabilization: Provides a stable load for oscillators (e.g., VCOs, DROs), enhancing frequency stability and phase noise performance.
  • Communication Systems: Used for channel isolation and signal quality improvement in base stations, microwave relays, and satellite communication systems.
  • Radar Systems: Protects Low-Noise Amplifiers in Transmit/Receive modules, enhancing system dynamic range and reliability.
  • Test & Measurement: Used in test setups to protect sensitive instruments such as signal sources and Vector Network Analyzers.

Electrical Performance Table and Product Appearance

2.7~4.0GHz Typical Microstrip 'T' junction Isolator
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HMITA27T35G⬇ 2.7~3.5 FULL 0.6 20 1.3 -55~+85℃ 20/10/5 Clockwise
HMITB27T35G⬇ 2.7~3.5 FULL 0.6 20 1.3 -55~+85℃ 20/10/5 Counter Clockwise
HMITA30T40G⬇ 3.0~4.0 FULL 0.5 18 1.3 -55~+85℃ 20/10/5 Clockwise
HMITB30T40G⬇ 3.0~4.0 FULL 0.5 18 1.3 -55~+85℃ 20/10/5 Counter Clockwise
HMITA35T55G⬇ 3.5~5.5 FULL 0.6 16 1.3 -55~+85℃ 20/10/5 Clockwise
HMITB35T55G⬇ 3.5~5.5 FULL 0.6 16 1.3 -55~+85℃ 20/10/5 Counter Clockwise
2.7~4.0GHz Typical Microstrip 'T' junction Isolator
3.4~5.5GHz Typical Microstrip 'T' junction Isolator
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HMITA34T45G⬇ 3.4~4.5 FULL 0.6 18 1.3 -55~+85℃ 20/10/5 Clockwise
HMITB34T45G⬇ 3.4~4.5 FULL 0.6 18 1.3 -55~+85℃ 20/10/5 Counter Clockwise
HMITA37T39G⬇ 3.7~3.9 FULL 0.5 20 1.25 -55~+85℃ 20/10/5 Clockwise
HMITB37T39G⬇ 3.7~3.9 FULL 0.5 20 1.25 -55~+85℃ 20/10/5 Counter Clockwise
HMITA40T50G⬇ 4.0~5.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/5 Clockwise
HMITB40T50G⬇ 4.0~5.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/5 Counter Clockwise
HMITA45T55G⬇ 4.5~5.5 FULL 0.5 20 1.25 -55~+85℃ 20/10/5 Clockwise
HMITB45T55G⬇ 4.5~5.5 FULL 0.5 20 1.25 -55~+85℃ 20/10/5 Counter Clockwise
3.4~5.5GHz Typical Microstrip 'T' junction Isolator
5.0~8.0GHz Typical Microstrip 'T' junction Isolator
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HMITA50T60G⬇ 5.0~6.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/5 Clockwise
HMITB50T60G⬇ 5.0~6.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/5 Counter Clockwise
HMITA55T65G⬇ 5.5~6.5 FULL 0.5 20 1.25 -55~+85℃ 20/10/5 Clockwise
HMITB55T65G⬇ 5.5~6.5 FULL 0.5 20 1.25 -55~+85℃ 20/10/5 Counter Clockwise
HMITA65T75G⬇ 6.5~7.5 FULL 0.5 20 1.25 -55~+85℃ 20/10/5 Clockwise
HMITB65T75G⬇ 6.5~7.5 FULL 0.5 20 1.25 -55~+85℃ 20/10/5 Counter Clockwise
HMITA50T80G⬇ 5.0~8.0 FULL 0.6 18 1.3 -55~+85℃ 20/10/5 Clockwise
HMITB50T80G⬇ 5.0~8.0 FULL 0.6 18 1.3 -55~+85℃ 20/10/5 Counter Clockwise
HMITA60T80G⬇ 6.0~8.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/5 Clockwise
HMITB60T80G⬇ 6.0~8.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/5 Counter Clockwise
5.0~8.0GHz Typical Microstrip 'T' junction Isolator
7.0~9.5GHz Typical Microstrip 'T' junction Isolator
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HMITA70T95G⬇ 7.0~9.5 FULL 0.6 17 1.35 -55~+85℃ 20/10/3 Clockwise
HMITB70T95G⬇ 7.0~9.5 FULL 0.6 17 1.35 -55~+85℃ 20/10/3 Counter Clockwise
HMITA75T95G⬇ 7.5~9.5 FULL 0.5 18 1.3 -55~+85℃ 20/10/3 Clockwise
HMITB75T95G⬇ 7.5~9.5 FULL 0.5 18 1.3 -55~+85℃ 20/10/3 Counter Clockwise
7.0~9.5GHz Typical Microstrip 'T' junction Isolator
8.0~18.0GHz Typical Microstrip 'T' junction Isolator
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HMITA80T100G⬇ 8.0~10.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/3 Clockwise
HMITB80T100G⬇ 8.0~10.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/3 Counter Clockwise
HMITA85T105G⬇ 8.5~10.5 FULL 0.5 20 1.25 -55~+85℃ 20/10/3 Clockwise
HMITB85T105G⬇ 8.5~10.5 FULL 0.5 20 1.25 -55~+85℃ 20/10/3 Counter Clockwise
HMITA80T120G⬇ 8.0~12.0 FULL 0.6 18 1.35 -55~+85℃ 20/10/3 Clockwise
HMITB80T120G⬇ 8.0~12.0 FULL 0.6 18 1.35 -55~+85℃ 20/10/3 Counter Clockwise
HMITA90T110G⬇ 9.0~11.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/3 Clockwise
HMITB90T110G⬇ 9.0~11.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/3 Counter Clockwise
HMITA100T120G⬇ 10.0~12.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/3 Clockwise
HMITB100T120G⬇ 10.0~12.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/3 Counter Clockwise
HMITA110T130G⬇ 11.0~13.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/3 Clockwise
HMITB110T130G⬇ 11.0~13.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/3 Counter Clockwise
HMITA120T150G⬇ 12.0~15.0 FULL 0.5 18 1.3 -55~+85℃ 20/10/3 Clockwise
HMITB120T150G⬇ 12.0~15.0 FULL 0.5 18 1.3 -55~+85℃ 20/10/3 Counter Clockwise
HMITA120T180G⬇ 12.0~18.0 FULL 0.7 16 1.4 -55~+85℃ 20/10/3 Clockwise
HMITB120T180G⬇ 12.0~18.0 FULL 0.7 16 1.4 -55~+85℃ 20/10/3 Counter Clockwise
8.0~18.0GHz Typical Microstrip 'T' junction Isolator
14.0~20.0GHz Typical Microstrip 'T' junction Isolator
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HMITA140T180G⬇ 14.0~18.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/2 Clockwise
HMITB140T180G⬇ 14.0~18.0 FULL 0.5 20 1.25 -55~+85℃ 20/10/2 Counter Clockwise
HMITA150T200G⬇ 15.0~20.0 FULL 0.6 18 1.3 -55~+85℃ 20/10/2 Clockwise
HMITB150T200G⬇ 15.0~20.0 FULL 0.6 18 1.3 -55~+85℃ 20/10/2 Counter Clockwise
14.0~20.0GHz Typical Microstrip 'T' junction Isolator
18.0~28.0GHz Typical Microstrip 'T' junction Isolator
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HMITA180T220G⬇ 18.0~22.0 FULL 0.5 20 1.25 -55~+85℃ 15/5/2 Clockwise
HMITB180T220G⬇ 18.0~22.0 FULL 0.5 20 1.25 -55~+85℃ 15/5/2 Counter Clockwise
HMITA180T240G⬇ 18.0~24.0 FULL 0.6 18 1.3 -55~+85℃ 15/5/2 Clockwise
HMITB180T240G⬇ 18.0~24.0 FULL 0.6 18 1.3 -55~+85℃ 15/5/2 Counter Clockwise
HMITA240T280G⬇ 24.0~28.0 FULL 0.7 18 1.3 -55~+85℃ 5/2/1 Clockwise
HMITB240T280G⬇ 24.0~28.0 FULL 0.7 18 1.3 -55~+85℃ 5/2/1 Counter Clockwise
18.0~28.0GHz Typical Microstrip 'T' junction Isolator
28.0~40.0GHz Typical Microstrip 'T' junction Isolator
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HMITA280T320G⬇ 28.0~32.0 FULL 0.7 18 1.35 -55~+85℃ 5/2/1 Clockwise
HMITB280T320G⬇ 28.0~32.0 FULL 0.7 18 1.35 -55~+85℃ 5/2/1 Counter Clockwise
HMITA330T370G⬇ 33.0~37.0 FULL 0.7 18 1.35 -55~+85℃ 5/2/1 Clockwise
HMITB330T370G⬇ 33.0~37.0 FULL 0.7 18 1.35 -55~+85℃ 5/2/1 Counter Clockwise
HMITA320T380G⬇ 32.0~38.0 FULL 0.8 17 1.4 -55~+85℃ 5/2/1 Clockwise
HMITB320T380G⬇ 32.0~38.0 FULL 0.8 17 1.4 -55~+85℃ 5/2/1 Counter Clockwise
HMITA320T400G⬇ 32.0~40.0 FULL 1.0 14 1.4 -55~+85℃ 5/2/1 Clockwise
HMITB320T400G⬇ 32.0~40.0 FULL 1.0 14 1.4 -55~+85℃ 5/2/1 Counter Clockwise
HMITA380T400G⬇ 38.0~40.0 FULL 0.7 20 1.35 -55~+85℃ 5/2/1 Clockwise
HMITB380T400G⬇ 38.0~40.0 FULL 0.7 20 1.35 -55~+85℃ 5/2/1 Counter Clockwise
28.0~40.0GHz Typical Microstrip 'T' junction Isolator

HMITA27T35G 2.7~4.0GHz
HMITA27T35G 2.7~4.0GHz
Typical Microstrip Isolator

About HzBeat

HzBeat is a leading RF component manufacturer specializing in RF circulators and isolators, as a global supplier of RF circulators and isolators (20MHz–200GHz), we providing microstrip, drop-in, coaxial, and waveguide solutions for communication systems, radar, satellite, and medical imaging.

For detailed technical documentation, sample requests, or customization needs, please do not hesitate to contact us. — we respond within 24 hours to ensure you get precise solutions for your design.

Customization & Selection Guide

  • Operating Band:Ensure it covers all frequencies required by your system.
  • Power Handling Capacity:Select based on your system's transmit power (average and peak), allowing a certain margin.
  • Performance Requirements:Define specific requirements for Insertion Loss, Isolation, and VSWR/Return Loss.
  • Environmental Conditions:Consider operating temperature range, vibration, humidity, etc.
  • Cost & Delivery:Balance cost and project timeline while meeting performance requirements.

Why Choose Our Product

  • Profound Technical Expertise:We have over 18 years of R&D experience in ferrite materials and microwave magnetics.
  • Fully Automated Production Lines:Ensure consistent excellence and reliability in every unit.
  • Professional Application Support:Our engineering team provides timely technical selection, customization, and failure analysis services.
  • Competitive Pricing & Lead Times:Economies of scale from mass production enable us to respond quickly to your orders.

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Questions? Feel Free to Reach Out Via Message.

Tell us frequency band, target IL/Isolation/VSWR, power level and timeline — we’ll match the best topology and deliver S-parameters.We will contact you within 24 hours.