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Microwave Tuning Elements

Our Microwave Tuning Elements serve as indispensable components in various high-frequency applications, including combined and interdigital filters, coaxial structures, and waveguide circuitry. Exxelia's tuning elements ensure excellent precision and low loss, guaranteeing reliable and high performance even in demanding environments. The optional self-locking capability eliminates the hassle of locking nuts, simplifying the tuning process for operators and ensures exceptional tuning stability and low dynamic noise. 

 

Our tuning elements are available in various materials for extended applications up to Ka band and beyond: metallic, dielectric (Sapphire, Quartz, Alumina), and resistive variants. Furthermore, customization options such as Gold or Silver plating, as well as chromate finishing, enable tailored solutions to match specific application requirements with precision. 

 

One of our standout features lies in the utilization of advanced materials such as Invar alloy. Recognizing the importance of temperature stability in microwave filters, especially for narrow bandwidth high-frequency filters, we leverage Invar alloy's superior Coefficient of Thermal Expansion (CTE) to achieve optimal temperature characteristics. 

 

Our dedicated team of experts stands ready to collaborate with our customers, offering custom design solutions tailored to their unique requirements. Whether it is a standard products or specialized designs, our Microwave Tuning Elements are engineered to maximize efficiency, precision, and reliability of microwave circuits. ROHS compliant and high-reliability versions are available upon request.

Frequently Asked Questions

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What are the specifications of the microwave tuning elements?

Tuning Elements consist of a brass mounting bushing with a rotor of the same material including a tuning rod made of metallic or dielectric or absorbent material and a nut.  

 

Metallic Tuning Elements consist of a brass mounting bushing with an integral tuning rotor of the same material and a nut. Bushing is gold plated, rotor and nut are passivated. Optional materials and plating are available upon request. 

What are the specifications of 4 mm wave tuning elements?

The millimeter Wave Tuning Elements are higher frequency versions of both Tuning Elements described in this data sheet.  Part number: AT 6922 ROHS. Bushing and rotor are made of brass gold plated. Usage in the frequency bands X to K. Bushing can be mounted with solder, epoxy or press-fit. 

What are the typical specifications of dielectric tuning elements?

Dielectric Tuning Elements are used whenever the lowest loss tuning for high frequency applications is required. When dielectric rod is introduced into a cavity, the self resonant frequency is lowered due to the cavity “appearing” larger. 

 

 The basic dielectrics used in Exxelia Ceramics Microwave Tuning Elements are sapphire, quartz and alumina. 

What are the key specifications to consider for metallic tuning elements?

Metallic Tuning Elements consist of a brass mounting bushing with an integral tuning rotor of the same material and a nut. Bushing is gold plated, rotor and nut are passivated.  Optional materials and plating are available upon request.

What are the key specifications to consider when selecting resistive tuning elements?

Resistive Tuning Elements provide a consistent and accurate means of attenuating microwave energy. Rod made of magnetically loaded epoxy exhibits broadband lossy properties. 

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