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, the first electronic circuit and the second electronic circuit being configured such that, at the first frequency, high band, the direction of the current in the first metallic section and the third metallic section is opposite to the direction of the current in the second metallic section and, at the second frequency, low-band, the currents in the first, second and third metallic sections are in the same direction; wherein the second end of the first metallic section is electrically attached to a first metallic plate, wherein the first metallic plate has a length less than the length of the first metallic section and there is a third non-conducting gap between the first metallic plate and the first metallic section and a length of the third non-conducting gap is less than the length of the first plate; wherein the second end of the third metallic section is electrically attached to a second metallic plate, wherein the second metallic plate has a length less than the length of the third metallic section and there is a fourth non-conducting gap between the second metallic plate and the third metallic section and a length of the fourth non-conducting gap is less than the length of the second plate; and wherein the second end of the second metallic section is attached to a third metallic plate, wherein the second metallic section having a first length and the third metallic plate having a second length and 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 length of the second metallic section plus the length of the third metallic plate is substantially equal to a quarter wavelength of the second frequency. 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, the first electronic circuit and the second electronic circuit being configured such that, at the first frequency, high band, the direction of the current in the first metallic section and the third metallic section is opposite to the direction of the current in the second metallic section and, at the second frequency, low-band, the currents in the first, second and third metallic sections are in the same direction; wherein the second end of the first metallic section is electrically attached to a first metallic plate, wherein the first metallic plate has a length less than the length of the first metallic section and there is a third non-conducting gap between the first metallic plate and the first metallic section and a length of the third non-conducting gap is less than the length of the first plate; wherein the second end of the third metallic section is electrically attached to a second metallic plate, wherein the second metallic plate has a length less than the length of the third metallic section and there is a fourth non-conducting gap between the second metallic plate and the third metallic section and a length of the fourth non-conducting gap is less than the length of the second plate; and wherein the second end of the second metallic section is attached to a third metallic plate, wherein the second metallic section having a first length and the third metallic plate having a second length and 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 length of the second metallic section plus the length of the third metallic plate is substantially equal to a quarter wavelength of the second frequency.