Download now Free registration required
In recent years, electrically small antennas are necessary to many wireless communication systems, such as RFID (Radio Frequency IDentification), WCDMA (Wideband Code Division Multiple Access), and UMTS (Universal Mobile Telecommunication System). The size of electrically small antenna is defined as ka < 1. Where, k is the wave number of resonant frequency of antenna and a is the radius of sphere enclosing the maximum dimension of antenna. The impedance bandwidth, radiation efficiency, and Q of an electrically small antenna are directly proportional to the maximum dimension of antenna.
- Format: PDF
- Size: 1167.36 KB