Microwave waveguide components Manufacturer

SL Microwave (Chengdu Sanlianweixun Technology Co., Ltd.) was founded in 2006. Our technical leader achieve PhD degree in electromagnetic field in 1990s and engaged in teaching and research and development of microwave and millimeter wave passive devices and components for more than 30 years. Products apply for aerospace, navigation, radar, electronic countermeasures, “Satcom on the move". The structural forms can be waveguide, cavity, coaxial, strip, microstrip. products with features as integration, reliable and high stable structure.

LATEST PRODUCTS

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X Band High Altitude Waveguide Bandpass Filter

High altitude, high power, sealed, without tuning screws

Extend C Band 4 Port Circular Polarization Duplexer

Extend C Band 4 Port Circular Polarization Diplexer

Contains OMT and 2 diplexers and 2 Magic T. Used for a part of antenna feed.

Ku/K/Ka multi band antenna feed system

Including splitter, combiner, OMT, circular polarizer, rotary joints, 180º phase shifter, septum polarizer, filters and connecting waveguides.

ADVANTAGES of Microwave Components

We have been specializing in microwave passive components for over ten years.

ABOUT
SLmicrowave

SL Microwave (Chengdu Sanlianweixun Technology Co., Ltd.) designs and manufactures custom microwave and millimeter-wave passive components waveguide filters, diplexers, OMTs, rotary joints, monopulse comparators and phased-array feed networks — for satellite ground stations, radar and aerospace systems. Based in Chengdu, China; founded [2006].

Relying on the team led by microwave and millimeter wave experts and professors from the University of Electronic Science and Technology of China, the company has independently developed high-precision electromagnetic simulation software with intellectual property rights.

According to the users' special requirements, our company can professionally design high-power passive components and space-borne antenna array passive components for high-altitude aircraft with small size, light weight, excellent performance and stable compact structure.

Specialized in product

Chengdu SLmicrowave can design Filters, Diplexers/Multiplexers, Power Dividers, Directional Couplers, Rotary Joints, Orthogonal Mode Couplers (OMT) and other products to meet the different requirements of high power passive components and passive components for satellite mounted antenna arrays.

RF Filter

Why choose us

1.2 PhD and 4 Masters lead technical team specialized in microwave passive components for more than 10 years.

2.Own manufacture with numerical control machines and wire cutting machines to guarantee sample’s feedback and quantity order.

3.Great quality control and stable performance. No customer complaints for years.

4.Powerful creative ability to satisfy clients’ customized requirements.

NEWS & EVEVTS

Chengdu SLmicrowave Company: 18 Years in Microwave & Millimeter-Wave Field, Empowering Global High-End Communications And Aerospace Industry

(January 12, 2026, Chengdu) As a leading enterprise in the field of microwave and millimeter-wave passive components, Chengdu SLmicrowave Company has been deeply engaged in the industry for 18 years. Relying on its top-tier technical team and full-chain production capacity, it continuously provides high-performance and reliable passive component solutions for global high-end fields such as aerospace, satellite communications, and radar systems, illuminating the global communication blueprint with the strength of Chinese intelligent manufacturing.

12 January 2026

SL Microwave Brings Monopulse Comparators and Phased-Array Feed Networks into One Production Line

04 November 2026

SL Microwave Showcases Monopulse and Multi-Band Feed Chains at European Microwave Week 2026