Exxelia Temex

Exxelia Temex, a leading designer and manufacturer of high-reliability passive components and innovative electromechanical solutions, is pleased to announce the release of new world-unique invar tuning elements featuring a self-locking system. The product has been designed to respond to increasing demand for high frequency tuning elements for space applications. The new invar tuning element will be introduced at EuMW on the company’s booth, booth# 237.



Working frequencies in Space applications are shifting to Ka, Ku or even Q band, while cavity filters are undergoing the general trend towards miniaturization: this context calls for a much more precise and stable tuning element now offered by Exxelia Temex, daughter company of Exxelia, through their last innovative and unrivalled solution to incorporate a self-locking system into their Invar Tuning Elements.

Invar-36 is a unique Iron-Nickel alloy (64% Fe/36% Ni) sought-after for its very low coefficient of thermal expansion. With 1.1 ppm. K–1 between 0°C and 100°C, Invar-36 is about 17 times more stable than Brass which is the most traditional and common alloy Tuning Elements are made of. The working temperature range in Space is so wide that this property becomes essential for a reliable and stable cavity filter tuning. Self-locking system is a technology commonly used on Tuning Element made of Brass or other soft “easy-to-machine” alloys but is innovative and pretty advanced when applied to hard and tough Invar 36. The design consists of two threaded segments separated by two parallel slots. After cutting both parallel slots, the rotor is compressed in its length in order to create a plastic deformation. Thus, an offset is induced between the two threaded segments which generates a constant tensile stress in the rotor from the moment threaded segments are screwed.

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Description

• High precision
• High resolution tuning
• Very low coefficient of thermal expansion
• Available with gold plating
• Available with locking nut or "self-locking system"
• Adjustments in applications from Ka, KU, Q band and beyond
• High Reliability versions are available on special order
• Custom design upon request
• ROHS compliant

Applications

• Comb-line and inter-digital filters
• Coaxial structures
• Waveguide circuitry
• Space applications
  

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emex Ceramics offers a wide range of ferrite materials, yttrium garnets (“Y” series or “D” series), magnesium (“U” series), nickel (“N” series) and lithium (“A” series) ferrites, as a result of their own developments on inheritage of the formerly companies CSF, LTT, Thomson. The offer covers need at frequencies from 0.1 to more than 30GHz, high power, with temperature exigencies as well.

Temex Ceramics manufactures their own ferrite powders from simple oxides or carbonates raw materials, then produce pressed and fired ceramics, machine them at tight tolerances and surface finishing up to polishing. Temex ceramics also supply assemblies of ferrite surrounded with dielectric, silver thick film metallized pieces, complex shapes.

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Economical means of introducing a variable reactance to microwave circuits such as waveguides, filters, cavities and other resonant structures.

• High resolution tuning
• Self-locking constant torque drive mechanism
• Excellent tuning stability
• Low dynamic noise
• One handed adjusting/tuning, no need for locking nut
• Available with Gold, Silver plating and chromate finish
• Metallic, dielectric, resistive types available
• Adjustments in applications from L to Ka band and beyond
• High Reliability versions are available on special order
• Custom design upon request
• ROHS compliant
  

Applications

• Comb-line and inter-digital filters
• Coaxial structures
• Waveguide circuitry
• Gunn oscillators
  

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TC Air dielectric trimmer capacitors are designed specifically for RF applications. They have a concentric tubular design. The self-locking constant torque mechanism assures uniform torque, low ESR and low dynamic tuning noise resulting in high Q.

As they are multi-turn, they offer a very fine resolution. Excellent temperature stability is a result of choice of optimum materials.

They meet MIL-C-14 409 D, and ESA/SCC n°3010, and are RoHS compliant. They are ideal for applications such as mobile radios, aerospace communications, crystal oscillators and filters, radar and numerous other space, military and industrial applications.



M series air dielectric, RoHS compliant, trimmer capacitors are a new generation specially designed for industrial and high volume applications such as splitters, filters, amplifiers for CATV, TNT markets.

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uperior ESR/ESL performance and high-resonant frequencies.

Ceramic chip capacitors: CHA and CHB.

Typical function applications are Bypass, Coupling, Tuning, Impedance Matching and DC Blocking.

Typical circuit applications are Linear RF Power Amplifiers (LPA), Mixers, Filter Networks, Timing Circuits, Delay Lines, Oscillators.

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Temex Power Capacitor Solutions Technical Paper

Miniaturised half-wave voltage multipliers from EXXELIA feature:



• Ultra-small size for compact systems
• High efficiency
• Balanced diode voltages
• Up to 7kV output voltage
• No ITAR content!

Possible applications include:

• X-ray systems
• Night vision, image intensifier systems
• Laser target designator

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