Cellular Antennas:

Shown in the figure an RF Antenna which we are using for radio frequency transmission at the frequency range of GSM 900 & 1800 as Dual band antenna. An RF antenna ion source (or radio frequency antenna ion source) is an internal multi-cusp design that can produce a particle beam of about ~30 to 40 mA current. It is used in high energy particle physics and in accelerator laboratories. Previous RF antennas would penetrate the porcelain enamel coating on the antenna section at high RF power. This problem has been corrected in the development stage with a ten layer coating of titanium dioxide, with approximately 1 mm thick coating. With the development of the RF antenna ion source, or "non-thermionic ion source," the ion source has an advantage over conventional cold cathodes and hot filament ion sources. The filament continuously burns out over time with a shorter lifespan, requiring venting of the ion source to atmosphere and rebuilding of the ion source.

Towers, Masts & Monopoles:

Cellular wireless systems are catered for by the mounting of antennas on either ground mounted structures (Greenfield), or roof mounted on existing suitable buildings.  offers a range of structures to meet these requirements from tapered lattice, parallel lattice, roof mount poles and stub towers to monopole solutions. Ancillaries such as caged climbing ladders, rest and work platforms, head frames, antenna support brackets, feeder management systems, aircraft warning lights and day mark painting are all available and are standard supply. Self Supporting Towers Guyed Masts Monopoles Cellular Trees

Microwave Links

Requirments for a Link:

• Network Planning
• Propagation Studies
• Line of Sight Surveys
• Path Profile Analysis
• Structural Analysis
• Programme Management and Construction
• Product Definition
• Product Supply
• Equipment Procurement
• License Applications
• Installation and Commissioning
• Integration, Test and Handover
• Network Management System provision

Microwave Transmission Planning
A desktop survey would consider the aperture height needed, the size of the dish antenna, the type of traffic to be carried on the link, the transmission power and the available frequencies.

From the use of GIS data, a theoretical path profile can be calculated. Once the sight and clear paths have been identified a Line of Sight Survey (LOS) can be ordered.

A Line of Sight Survey is to confirm that the theoretical design matches the actual terrain. This would involve an engineer visiting a site to confirm that there are no obstacles and a clear path exists.

Microwave System Installation
Based on the results of the surveys, installer will be able to install the Antennas as the required aperture height and orientation. The outdoor units and waveguides will be installed as per design. The installation engineer will install the radio equipment as per the general arrangement drawings.

Microwave Transmission Commissioning
Once the installation is complete installer will verify the link alignment and check the link budget. Engineer will check the connections for correctness and neatness before running a Bit Error Rate (BER) check of the link for the recommended soak time.

Once the BER is passed our engineers will check documentation and handover to the client.

Antenna (radio)

An antenna is a transducer designed to transmit or receive electromagnetic waves. In other words, antennas convert electromagnetic waves into electrical currents and vice versa. Antennas are used in systems such as radio and television broadcasting, point-to-point radio communication, wireless LAN, radar, and space exploration. Antennas usually work in air or outer space, but can also be operated under water or even through soil and rock at certain frequencies for short distances.

Physically, an antenna is an arrangement of conductors that generate a radiating electromagnetic field in response to an applied alternating voltage and the associated alternating electric current, or can be placed in an electromagnetic field so that the field will induce an alternating current in the antenna and a voltage between its terminals. Some antenna devices (parabola, horn antenna) just adapt the free space to another type of antenna.