Antenna System (ATS), Function

Antenna System (ATS), Function

Antenna System Block Diagram:

Preliminary Remarks
In the present description only the antenna system for Audio, TV, telephone and navigation is described.

General
The various antennas are designed according to their special reception and transmission ranges.

We differentiate between passive and active antennas:

Passive antennas do not require a power supply, they are therefore not capable of direct amplification of the radio signals received.

Examples:
- All antenna in the rear and front window
- Telephone antenna (A2/22)

Active antennas are supplied with power. They have an integrated amplifier.

Example:
- GPS antenna (A2/23)

The power supply is supplied by separate leads or via the coaxial leads which serve simultaneously for signal transmission (so-called phantom feed). In this case, no separate leads are required for the power supply.

A further difference between the antennas is that some antennas serve only for reception while others serve for reception as well as transmission.

Examples:
Reception only:
- GPS antenna (A2/23)

Transmission and reception:
- Telephone antenna (A2/22)