Compact slot antenna for ultra-wide band applications

• Published in: IET microwaves, antennas & propagation Vol. 8; no. 3; pp. 200 - 205
• Main Authors: Gong, Bing, Ren, Xue Shi, Zeng, Ying Yin, Su, Lin Hua, Zheng, Qiu Rong
• Format: Journal Article
• Language: English
• Published: Stevenage The Institution of Engineering and Technology 01.02.2014; Institution of Engineering and Technology; The Institution of Engineering & Technology
• Subjects: antenna feeds; antenna radiation patterns; Antennas; Applied sciences; band notched properties; Broadband; Circuit properties; compact slot antenna; Connectors; dielectric constant; Electric, optical and optoelectronic circuits; Electronic circuits; Electronic equipment and fabrication. Passive components, printed wiring boards, connectics; Electronics; Exact sciences and technology; frequency 5.15 GHz to 5.35 GHz; frequency 5.725 GHz to 5.825 GHz; Frequency filters; impedance matching; Local area networks; L‐shaped slot; microstrip antennas; microstrip feed line; Microwave antennas; Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits; patch radiation; printed antenna; radiation patterns; Radiocommunications; Slot antennas; SMA connector; Telecommunications; Telecommunications and information theory; ultra wideband antennas; ultrawide band antenna; ultrawide band applications; Wireless communication; wireless LAN; wireless local area network; Wireless networks; WLAN; ultra wideband antennas; band notched properties; ultrawide band antenna; WLAN; microstrip antennas; patch radiation; L-shaped slot; dielectric constant; compact slot antenna; frequency 5.725 GHz to 5.825 GHz; wireless local area network; microstrip feed line; ultrawide band applications; impedance matching; slot antennas; frequency 5.15 GHz to 5.35 GHz; antenna radiation patterns; SMA connector; antenna feeds; printed antenna; wireless LAN; radiation patterns; Connector; Wireless LAN; Wireless telecommunication; Printed antenna; Compact design; Broadband antennas; Ultra wide band; Microstrip line; Notch filter; Transmission line; Impedance matching; Shape memory alloy; L shape; Slot antenna; Antenna feeds; Band stop filter; Radiation pattern; Miniaturization; Permittivity
• ISSN: 1751-8725; 1751-8733; 1751-8733
• DOI: 10.1049/iet-map.2013.0067

A novel compact ultra-wide band antenna with L-shaped slot is presented. The printed antenna is fed by a microstrip feed line to achieve impedance matching for the SMA connector. The proposed antenna offers 118% bandwidth when printed on a substrate of dielectric constant 4.4 and has an overall dimension of 23.7 × 23.7 × 0.8 mm3. The simulated and measured reflection characteristics of the antenna with the variation of key-parameters along with radiation patterns of the final antenna are presented and discussed. In addition, by decreasing the dimension of radiating patch, band-notched properties in the lower wireless local area network (WLAN) (5.15–5.35 GHz) or higher WLAN (5.725–5.825 GHz) bands are achieved. With the compact size and broadband, this antenna is very suitable for using in a trade-off which has to be taken account for a design of miniaturisation.