Radome Data Sheet for Various Type Radomes and Sizes.
Advantages of Dielectric Radomes over Other Radome Types.
Radome Sizes for Dielectric Radomes. Radome Transmission Loss and Antenna Pattern Degradation. Radome Structural Analysis and the Role of General Buckling. Hydrophobic Coating to Reduce Rain Attenuation and for Anti-ice Protection. Application Note on Radome Thermal Insulation Radome Installation Methods and Techniques. AFC Radome Capability for Thin Membrane, Solid Laminate and Sandwich Radomes. AFC Press Announcements. Catalog Request Form. Email AFC's Sales Department. Email AFC's Customer or Technical Support Department. Go to AFC Home Page. Go to AFC Products. Go to AFC Profile. Go to AFC Site Index.
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Antennas for Communications
Radome Network
High Performance Dielectric Radomes

DSCS 20.7m Diameter X-band Radome Okinawa. DSCS 20.7m Diameter X-band Radome Okinawa. 5.5m 3-Layer Sandwich Impedance Matched Radome C-band Weather Radar Winter Olympics Japan. 12.7m Impedance Matched S-band Doppler Radar Brazil. 10.7m 3-Layer Sandwich Radome Diego Garcia. 5.5m Solid Laminate Radome.

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Welcome to the Radome Network Home Page.

For demanding radar, telemetry and communications systems, radomes safeguard against environmental concerns, such as wind, blowing sand, snow, ice, rain, ultra violet sun light, temperature, fungus and corrosion. AFC's high technology all dielectric radome capability combines the expertise of materials science, geodesic domes, structures and electromagnetics. AFC manufactures four types of dielectric radomes. The four types identify themselves primarily by the radome wall construction. In each case, the dielectric panel edges are reinforced into flanges for adjacent panel assembly. After assembly, the radome dielectric flanges form a framework establishing the general terminology Dielectric Space Frame (DSF) for AFC's radome products. Depending on radome wall parameters, adjacent panel flanges may also serve as environmental load bearing beams or struts. Each panel is a molded one piece unit without bond or seam lines. When assembled to the other panels, the panel array forms a truncated spherical surface. Individual panels may be doubly curved or flat yielding a faceted or spherically smooth appearance. Foam insulation is often added to the wall producing a two or three layer sandwich configuration. Radome applications include radar and weather radar systems, air traffic control, telemetry, satellite communications, satcom uplink, dscs, milstar and receive-only listening systems.

Not commonly known to most engineers, radome transmission loss is composed of the insertion loss from the RF signal passing through the radome wall and from the scattering loss off the panel flange framework. In most cases, the scattering loss from the framework is several times greater than the wall insertion loss.
C-band Impedance Match
Transmission Loss Improvement by
Impedance Matching Scattering at C-band.
To reduce scattering loss, AFC engineers pioneered a technique known as impedance matching to "tune out" framework loss. As required by sophisticated electrical performance requirements, inductive elements (wire, metallic strips etc.) may be laminated into the dielectric flanges to impedance match scattering loss. Any of the four DSF radome types may be impedance matched.

Every DSF radome exhibits the RF property that the total transmission loss, scattering plus wall insertion loss, approaches zero dB at low frequencies (as opposed to "Metal Space Frame Radomes" whose loss increases without limit. This property is important for UHF/VHF emergency radio communications contained within the radome).

To enhance RF performance, a design-balancing process occurs between a stronger structure at maximum rated wind speed and improved RF performance. This balancing act determines that our radomes are designed with appropriate structural safety factors. It is for this reason that AFC defines radome structural safety factors by a criterion based on catastrophic radome failure.

The superior performance and advantages of DSF Radome technology are evident in the worldwide Defense Satellite Communications System (DSCS), weather satellite and radar, air surveillance radar and Intelsat Communications applications.

      The four DSF radome types are:

Thin Membrane Solid Laminate 2-Layer Sandwich 3-Layer Sandwich
Thin Membrane Wall Radome Solid Laminate Radome 2-Layer Sandwich Radome 3-Layer Sandwich Radome
The thin membrane wall DSF radome where adjacent panel flanges carry all the wind loads. Wall thickness is usually 0.040 inch or less. The solid laminate wall DSF radome. Wall thickness is typically 0.090 inch. Adding a layer of foam to the inside thin membrane wall DSF radome forms a 2-layer sandwich wall radome. Foam thickness is chosen primarily for thermal insulation and cost objectives. The composite 3-layer sandwich foam core wall radome. Core thickness is chosen as 1/4 wavelength for the highest RF signal frequency.

We invite you to visit AFC's home page to investigate our company profile and other products. A complete list of all Internet web documents is located at AFC's Site Index. Announcements on AFC's major military and commercial contracts, projects and awards are found in the Press Releases section.

For AFC's Product Catalog, email catalog@afcsat.com or request an AFC's Catalog now. For sales inquires or for general information, email AFC's departments sales@afcsat.com, info@afcsat.com or write or telephone AFC directly. Customer or technical support may reached at support@afcsat.com.

AFC manufactures, markets and sells worldwide satellite dish antennas, conical horn antennas, radomes, antenna feeds, microwave and waveguide components, ultra low loss waveguide transmission line Tallguide , and custom shelters. Our customers serve the satellite, broadcast, communications, radar, weather and cable industry, defense, government, and government agencies worldwide. AFC's quality control manufacturing standards are certified under ISO 9001 : 2008.

Antennas for Communications
2499 SW 60th Ave, Ocala, FL 34474
Telephone (352) 687-4121 Fax (352) 687-1203 E-mail sales@afcsat.com


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