Single-cable radio antenna system for a vehicle

A system for receiving radio signals for a vehicle, the system comprising:

• an antenna farm unit including:
• a plurality of antennas;
• a plurality of amplifiers, wherein each of the plurality of amplifiers has an input port and an output port, and wherein the input port of each of the plurality of amplifiers is in electrical communication with one of the plurality of antennas;
• and
• a radio frequency (RF) switch in electrical communication with the output port of each of the plurality of amplifiers;
• a radio unit including:
• a plurality of tuners;
• and
• a demultiplexer in electrical communication with the plurality of tuners;
• and
• a transmission line for connecting the antenna farm unit to the radio unit, wherein the transmission line has a first terminal and a second terminal, and wherein the first terminal of the transmission line is electrically connected to the RF switch and the second terminal of the transmission line is electrically connected to the demultiplexer.

A system for receiving radio signals for a vehicle, the system comprising:

• an antenna farm unit including:
• a first antenna for receiving amplitude modulated (AM) radio signals and frequency modulated (FM) radio signals;
• and
• a second antenna configured for receiving satellite radio signals;
• a first amplifier, wherein the first amplifier has an input port and an output port, and wherein the input port of the first amplifier is connected to the first antenna;
• a second amplifier, wherein the second amplifier has an input port and an output port, and wherein the input port of the second amplifier is connected to the second antenna;
• and
• a first diplexer in electrical communication with the output port of the first amplifier and the output port of the second amplifier;
• a radio unit including:
• an AM/FM tuner;
• a satellite radio tuner;
• and
• a second diplexer in electrical communication with the AM/FM tuner and the satellite radio tuner;
• and
• a transmission line for connecting the antenna farm unit to the radio unit, wherein the transmission line has a first terminal and a second terminal, and wherein the first terminal of the transmission line is electrically connected to the first diplexer and the second terminal of the transmission line is electrically connected to the second diplexer, and wherein the transmission line is further electrically connected to the first amplifier and the second amplifier, and the first amplifier and the second amplifier each receive a power supply and a DC bias signal from the radio unit using the transmission line.