Antenna System

Antenna System (4D)












Antenna
The antennas for radio reception are integrated with the rear window and are located as follows:
- the AM antenna is placed at the top of the rear window;
- the FM antenna(s) is/are integrated with the heating element.

The rear window is the same for all markets.

The antenna signal is amplified by an amplifier located on the right-hand C-pillar. There are two different types of antenna amplifier for the Premium/Prestige models, depending on the market in question: one is black, the other red. The Popular model uses the black design.

The antenna amplifier is supplied with trigger voltage by pin 7 in the main unit and grounded by being bolted to the chassis.

The black variant is used for post-assembly-line fitting in all markets.

On the left C-pillar is an antenna filter which grounds the electric heating element but blocks the antenna signal from ground. The antenna filter is standard in all cars.

Antenna system 1, black version







1. AM antenna in a separate loop at the top of the rear window.
2. FM1 antenna coupled with the electric heating element.
To prevent the antenna signal being emitted when power is supplied to the electric heating element, a filter is fitted in the antenna amplifier to block the antenna signal. On the ground side of the heating element is an antenna filter which blocks the antenna signal from ground.
3. The electrically heated rear window is connected to the antenna amplifier and filter. A capacitor prevents the voltage from reaching the antenna amplifier. The electrically heated rear window is grounded through the antenna filter.

The amplified antenna signal is supplied to the radio via the coaxial cable.

Antenna system 2, red version







1. AM antenna in a separate loop at the top of the rear window.
2. FM1 antenna coupled with the electric heating element.
To prevent the antenna signal being emitted when power is supplied to the electric heating element, a filter is fitted in the antenna amplifier to block the antenna signal. On the ground side of the heating element is an antenna filter which blocks the antenna signal from ground.
3. FM2 antenna connected to the same connector as the AM antenna on the rear window. It is connected to a loop across the AM antenna and to the electric heating element.
4. The electrically heated rear window is connected to the antenna amplifier and filter. A capacitor prevents the voltage from reaching the antenna amplifier. The electrically heated rear window is grounded through the antenna filter.

The antenna amplifier contains a changeover function which works with the radio to select the best FM signal (selects FM1 or FM2).

The amplified antenna signal is supplied to the radio via the coaxial cable.