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Flower-Like CPW-FED Monopole Antenna for Quad-Band Operation of Mobile Handsets

A novel flower-like quad-band CPW-fed monopole antenna using a dual-inverted-L loop and four branched-inverted-L strips is proposed and investigated experimentally. The antenna that occupies area of 69 × 50 mm2 is demonstrated on a FR4 substrate including the ground plane. The proposed antenna is easy to be integrated with radio-frequency/microwave circuitry for low manufacturing cost. The proposed quad-band antenna has enough bandwidth to cover the GSM (880–960 MHz), DCS (1710–1880 MHz), PCS (1850–1990 MHz), and WLAN (2400–2483.5 MHz) bands for VSWR ≤ 2. The measured peak gains are 1.44, 3.55, 3.287, and 2.7 dBi, at the GSM, DCS, PCS, and WLAN bands, respectively. Good monopole-like radiation patterns and antenna gains have also been obtained.