Automotive antenna

An antenna for transmitting a first frequency and a second frequency signals, comprising:

• a first metallic section having a first end and a second end;
• a second metallic section located on a side of the first metallic section and having a first end and a second end, wherein the second metallic section is separated from the first metallic section by a first non-conducting gap;
• a third metallic section located on a side of the second metallic section and having a first end and a second end,
• wherein the third metallic section is separated from the second metallic section by a second non-conducting gap,
• wherein the first end of the first metallic section is connected to a first electronic circuit, the first end of the third metallic section is connected to a second electronic circuit, and the first end of the second metallic section is connected to a feeding port,
• wherein the second end of the first metallic section is electrically attached to a first metallic plate,
• wherein the second end of the third metallic section is electrically attached to a second metallic plate,
• wherein the second end of the second metallic section is attached to a third metallic plate,
• wherein the second metallic section has a first length and the third metallic plate has a second length,
• wherein the first length plus the second length is greater than a length of the first metallic section or the third metallic section,
• wherein the length of the first metallic plate is approximately equal to a quarter wavelength of the first frequency, and
• the first length of the second metallic section plus the second length of the third metallic plate is substantially equal to a quarter wavelength of the second frequency.