ETRA821/18503P

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The ETRA821/18503P are versatile RF antennas which are used in CW and pulse-Doppler radar, avionics systems, and other applications. The ETRA821/18503P has two distinct advantages compared to conventional antenna designs; its frequency range and its multi-mode operation. It is capable of a wide range of frequencies, from 700 MHz to 18 GHz, and can be used in both linear and circular polarizations for both single and multiple antenna systems. It is also capable of operating in both continuous wave (CW) and Doppler modes.

The ETRA821/18503P is an omni-directional antenna, meaning it is designed to receive and transmit signals in all directions. This allows its operators to take full advantage of its wide frequency range and multi-mode operating capability. It utilizes multiple elements which can be configured in numerous configurations, such as a single dipole array, multiple dipole arrays, or a monopole array. The ETRA821/18503P is also capable of being mounted in various ways, including being integrated into a ground plane antenna structure or an underground cable system.

The ETRA821/18503P\'s frequency range and multi-mode operation make it highly advantageous for various applications. For CW applications, the ETRA821/18503P is usually configured as a directional dipole array. Such a configuration allows the array to provide maximum gain in a specific direction, enabling the operators to accurately locate objects in a specific direction. For pulse-Doppler applications, the ETRA821/18503P is usually configured in a combination of multiple dipoles to provide both omni-directional coverage and high gain performance. The array can also be configured to provide gain reduction for areas where signal interference is high.

The unique capability of the ETRA821/18503P is its ability to operate in both single and multiple antenna configurations. This means that the antenna can be used with both multiple and single-element antennas, offering the flexibility to switch between different arrays for different applications. It is also capable of being operated in both CW and pulse-Doppler modes, allowing it to be used for both short-term pulse tracking and long-term tracking applications. In addition, the ETRA821/18503P is capable of accessing the same frequency domain in both single and multiple antenna configurations.

The ETRA821/18503P is a highly versatile antenna which offers both CW and pulse-Doppler capabilities, and can be configured into various shapes and sizes to meet the needs of different applications. Its flexibility in frequency range and multi-mode operation makes it a great choice for a variety of RF applications, such as radar, avionics systems, and more. And with its multiple mounting options, it can be easily integrated into a variety of environments.

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