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A miniature antenna for AGPS is presented. Its size is 10 mm times 3 mm times 3 mm, and more suitable to hand-held applications. The bandwidth of AGPS chip antenna is 30 MHz, gain is about 3.4 dBi, and radiation patterns are wide beamwidth in three basic planes. Although the antenna polarization seems to be linear polarization, the receiving effect is still good for only 3 dB degradation in the gain performance

A CPW-fed rectangular dielectric resonator antenna is presented. The reflection coefficient and radiation patterns of such a dielectric resonator antenna with a high dielectric constant fed by an open-ended coplanar waveguide are studied. In the antenna design, the offset distance from the center of the dielectric resonator antenna to the open-ended slot center, can be used to tune the input impedance on the CPW-fed dielectric resonator antenna. Also, the calculated and experimental reflection coefficient, center frequency, antenna bandwidth, and radiation patterns are compared.