Antenna

General Information

Supported by manufacturing and distribution facilities Asia-Pacific, TTT provides coaxial transmission line products to the international
wireless communications markets.
CELLFLEX? foam dielectric coaxial cable products are available for mobile and wireless infrastructure applications.
HELIFLEX? air dielectric coaxial cable products are used in several communications, broadcast and other high power systems.
TTT corrugated cables provide strength and flexibility and feature low attenuation, low VSWR, and outstanding intermodulation performance.

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


CELLFLEX? Foam Coaxial Cable

CELLFLEX foam dielectric cables combine a remarkable flexibility with high strength and superior electrical performance. The cable construction allows easy handling and easy preparation for attachment of connectors together with high resistance to connector pull-off.

CELLFLEX foam dielectric cables have the following characteristics:

- High flexibility
- High crush resistance
- Low attenuation
- High power rating
- Longitudinal uniformity
- Small reflection factor
- High screening effectiveness
- Resistant to hostile environments



Low loss cables use foam with very low dielectric losses resulting in low attenuation of RF power.

Superflexible cables are highly bendable due to the mechanical construction of the cable.

Ultraflexible cables use a specific inner conductor design resulting in the highest flexibility of copper cables available on the market.

Used as antenna feeders, cabling of antenna arrays, radio equipment interconnections, jumper assemblies or indoor applications, CELLFLEX? foam dielectric cables provide a reliable and technically superior solution for many wireless applications.

CELLFLEX? foam dielectric cables are often specified in communications and electronic systems.

- Microwave communications systems
- Landmobile systems
- Cellular systems
- Rural telephone systems
- HF systems
- Broadband
- Wireless

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

FLEXWELL? Elliptical Waveguide

Radio Frequency Systems is the originator and designer of continuous seam welded corrugated transmission lines. FLEXWELL? is RFS’s brand name for the highest quality, best performing, and most reliable elliptical waveguide in the industry. FLEXWELL? designs are constantly proven successful in thousands of installations throughout the world. FLEXWELL? elliptical waveguide is the ideal choice for microwave antenna systems and offers quality and reliability that you can depend on.

FLEXWELL? waveguides are available in a wide selection of frequency bands throughout the 3 GHz to 40 GHz microwave bands. The waveguides are equivalent in sizes to rectangular waveguide R32 (WR284) through R320 (WR28).

Three versions of FLEXWELL? elliptical waveguide are offered: FLEXWELL? "Standard" waveguide, low VSWR "Premium" waveguide and "Overmoded waveguide". Standard and premium waveguide differ only in testing and guaranteed attainable VSWR. FLEXWELL? "standard" waveguide is recommended for low and medium capacity radio relay systems, while FLEXWELL? "premium" elliptical waveguide assemblies are recommended for high capacity radio systems. Overmoded waveguides offer exceptionally low attenuation characteristics compared with conventional waveguides. The waveguide operates above the cut-off frequency of higher order modes utilizing the lowest attenuation characteristics of the waveguide. Connectors for overmoded waveguide include filters which eliminate distortion due to mode conversion.

FLEXWELL? elliptical waveguide is constructed of pure electrolytic copper strip which uses a special RFS process to butt weld, corrugate and form into an approximate elliptical shape. The copper waveguide is covered with a black polyethylene jacket for protection during transport and installation.

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

HELIFLEX? Air Coaxial Cable

HELIFLEX air dielectric cables consist of an inner conductor and an outer conductor. By using a dielectric helix (made of high density polyethylene) the inner conductor is centered to the outer conductor. The shape of the dielectric is either rectangular or in the case of small diameter cables, trapezoidal. Larger cables use a low material content helix with T-shaped supports. Cables for the highest power transmission use three-legged teflon spacers, which are positioned periodically along the cable.

All HELIFLEX air dielectric cables are designed to incorporate the following features:

- High flexibility
- High crush resistance
- Low attenuation
- High power rating
- Longitudinal uniformity

HELIFLEX? cables are designed for applications where high flexibility and crush resistance are required. The attenuation of HELIFLEX? cables is much lower when compared to the foam dielectric cables.
HELIFLEX? cables are used extensively worldwide for the transmission of large RF power.

- Feeder cables for broadcast stations
- AM / FM
- Analog and digital TV
- MDS / MMDS

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

RADIAFLEX? Radiating Cable

RADIAFLEX? radiating cables facilitate radio communication where the usual free space propagation of electromagnetic waves is hampered, undesired or impossible- in tunnels, mines, buildings, alongside tracks or lines and in large complexes like exhibition grounds or airports.

RFS has a wide range of radiating cables available, each optimized for the following fields of application:

- ALF, RLF series for heavy duty wideband and multiuse applications in tunnels of all kinds; easy system planning.
- RLK series for applications in tunnels and buildings, where low coupling loss variations are required.
- RLV series for tunnel applications, with graded coupling loss (VARIO) performing nearly constant system loss and low amplitude variation.
- RAY series for tunnels and buildings, optimized for high frequencies and digital transmission, where low coupling loss variations are required.
- RCF series for easy installation in buildings and mining, where particularly small bending radii are required and for heavy duty applications.
- RSF series preferable for installations in vehicles where narrow space requires sharp bending radii.
- RHCA series for use in buildings where the highest level of fire retardant standards are required. Plenum rated RHCA cables utilize an air-dielectric design. The - dielectric support is wrapped Teflon tube.

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

Jumper Cables

CELLFLEX? foam dielectric jumper cables provideprovide the ideal combination of low-loss, high-strength and highest flexibility for optimum performance. Jumper cables are mainly used between main feeders and antennas or between main feeders and system equipment.

The use of jumpers provides greater flexibility if antennas are to be changed due to network upgrades, while the network is getting mature, reduced mechanical stress on antennas and connectors and better accessibility of feeder terminations (i.e. for trouble shooting).

Four lines of jumper assemblies are available, depending on cable type and connector configuration. The premium soldered, premium molded as well as the factory fit jumper line is already factory assembled with fully soldered connectors. The assembled jumper line is delivered as a kit with standard connectors to be installed on site or factory installed. In general, it can be said that the soldered versions offer advantages with regard to intermodulation performance. The assembled version gives higher flexibility in length and connector options and shortens delivery cycles for seldom-requested versions.

Characteristics of CELLFLEX? jumper cables are:

- Excellent contact force
- Low and stable intermodulation product IM3
- Excellent RF screening effectiveness
- Designed to IP68 classification

Passive third order intermodulation is a threat in mobile communication especially for multi-channel systems incorporating duplexers. For RFS jumpers the third order intermodulation is typically reduced to values below -155 dBc (which means 155 dB lower than the two incident test carriers of +43 dBm). For RFS soldered connectors of the premium soldered, premium molded and factory fit jumper lines this value is improved to typically -162 dBc.

The jumper cables are for indoor and outdoor applications and withstand severe environmental conditions.

Jumper assemblies are watertight (transversally and longitudinally), providing additional safety even if humidity should enter the coaxial system. Additional sealing (e.g. weather-proofing kits) can be used but is not mandatory.

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

connect

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

cable Access