A wide-band dual meander-sleeve antenna

A wide-band dual meander-sleeve antenna which is 24% shorter than a straight-wire quarter-wave monopole has been developed. The antenna can be used as a vehicular antenna operating simultaneously in the 824-894 MHz and the 1850-1990 MHz bands of the personal communication services (PCS). The antenna we propose has bandwidths of 38% in the 824-894 MHx band and 14% in the 1850-1990 MHz band within VSWR less than or equal to 2. The radiation patterns are omnidirectional in both frequency bands. The gain of the antenna is 2.4 dB at 890 MHz with reference to a half-wave dipole. The maximum gain at 1890 MHz is 4.4 dB and the minimum is 2.9 dB with reference to a half-wave dipole. The polarization of the antenna is vertical. The only limitation of this antenna is a slightly lower gain (2.4 dB compared to required 3 dB with reference to a half-wave dipole) in the 824-894 MHa band. Since the antenna operates over a frequency range of 2.6:1 within VSWR less than or equal to 3, it can also be useful for other wide-band applications.