Antenna Radomes

antenna radomes

The Company designs bespoke and standard wideband low-loss radomes up to 40 GHz using Ray Optics and CST electromagnetic solvers, whilst FEA Solidworks simulation is used to determine wind load stress and deflection.

The radomes are manufactured using solid laminate with open moulding methods and low loss materials laid up as a “C” sandwich. Sandwich core radomes consist of either 2 or 3 layers of a core material between two or more thin sheets of composite. By varying the thickness in both solid laminate and sandwich construction, optimal performance is achieved for the particular frequency range required.

Large multilayer radomes typically up to 6m in diameter can be supplied; and a standard range of radomes are available from 1.1m to 4.8m in diameter.

Steatite has in-house software tools for the design of FSS and experience in the making of FSS radomes and sub-reflectors (singly and doubly curved); also in the design of circuit analogue materials and frequency selective radar absorbers and Salisbury screens. The Company carries out theoretical studies into the microwave properties of single and multi-layer dielectric structures for such purposes as microwave windows, radomes and structural components. The dielectric properties of materials can also be measured.

The ideal radome would appear totally transparent to any electromagnetic signal. Radomes must be designed to minimise the impact of the radome on the enclosed antenna performance. Application requirements often determine the importance of signal distortions such as insertion loss, and scattering into the antenna side lobes.

Solid laminate and sandwich core radomes can be assembled from multiple panels or 1 single piece (the number of panels depending on the size of the radome). Through the process of design it is possible to minimise the effect that the internal flanges has on scattering the signal.

A pre-preg manufacturing process is used and offers a high strength to weight ratio and improved capabilities of operating at high temperatures as well as an increased control over the resin to glass ratio.

Selecting a radome to match your requirements

The primary factors in selecting the type of radome for applications are performance and cost. Additional considerations include installation, wind/gust rating, ease of transportation and weight/snow -loading. All project factors must be considered in order to ensure an optimum match.

Initial cost approximation

The initial cost of a radome is primarily dependant on the size of the structure and increases with the radome surface area (radome diameter) .The material and labour costs in a radome increase geometrically with the diameter (note: doubling the diameter of a sphere increases the surface area by a factor of four).

Mechanical considerations

Radomes are designed to operate and withstand considerable wind speeds and snow or ice loading.

Typically wind speeds of up to 60 m/s (134 mph), and snow or ice loading of up to 235 Kg/m2 9 (50Lb/ft2) however MICRIS can design a radome to match your particular loading requirements.

 Please download the Company’s product and services brochure here

To find out more about Steatite Antennas or discuss specific requirements please contact on +44(0)1568 617920, or email 

For further information on all capabilities please download Steatite Company Overview.

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