APAMS-118

RF antennas come in various shapes and sizes and perform different functions. The AMAPS-118 is a type of RF antenna that is designed for use in aircraft communications, and is the main antenna for the ARINC 818 databus.

The AMAPS-118 is an omnidirectional, multi-frequency antenna that can operate on frequencies from 118 MHz to 137 MHz. It works by creating a directivity in the direction of the radio signal it is receiving. This directional antenna is made up of a hexagonal pattern of dipoles that are each tuned to receive and transmit different frequency bands. This allows the antenna to operate on multiple frequencies simultaneously, meaning it can receive and transmit multiple signals simultaneously.

The antenna also has a low noise figure, meaning it can pick up low-amplitude signals without interference. This is particularly beneficial for aircraft communication, where signals can be very weak and are often drowned out by background noise. The antenna is also highly efficient, with less than 0.25dB loss on 118 MHz and only 0.5dB loss on 137 MHz.

The AMAPS-118 is suitable for use in applications such as traffic control, navigation beacons, air traffic management, and air-to-ground communications. It is ideal for transmitting signals from ground to air and vice versa. The antenna is also commonly used in aircraft cabins, as it can provide reliable reception of signals from the ground.

The AMAPS-118 is a lightweight and durable antenna that can withstand harsh environments such as in-flight turbulence. This makes it suitable for use in all weather conditions. The antenna is also resistant to corrosion and icing, making it a reliable choice for aircraft communications.

The AMAPS-118 is an effective and reliable antenna for aircraft communications, providing a directional pattern with low noise, low signal losses, and reliable performance in harsh conditions. It is ideal for use in both aircraft cabins and air-to-ground communications, making it a versatile and reliable choice for aircraft communications.