Broadband internal antenna of planar monopole type for mobile handsets

The paper presents a novel internal antenna of a planar monopole type. The proposed antenna, fed by a 50 /spl Omega/ microstrip line, operates at DCS (1710-1880 MHz), PCS (1750-1870 MHz), and IMT-2000 (1885-2200 MHz) bands. The size of the antenna, not including the support, is 20/spl times/17/spl times/0.2 mm/sup 3/. The bandwidth of the proposed antenna (S11<10 dB) is 740 MHz, from 1620 MHz to 2360 MHz. Numerical simulation and experiment results are performed taking into consideration the antenna itself, the phone case, and the battery.