A new wideband planar antenna with band-notch functionality at GPS, Bluetooth and WiFi bands for integration in portable wireless systems

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• 作者：Mohammad Alibakhshikenari^a ; ^{Alibakhshikenari@ing.uniroma2.it}Author Vitae ; Ernesto Limiti^a ; ^{limiti@ing.uniroma2.it}Author Vitae ; Mohammad Naser-Moghadasi^b ; ^{mn.moghaddasi@srbiau.ac.ir}Author Vitae ; Bal S. Virdee^c ; ^{b.virdee@londonmet.ac.uk}Author Vitae ; R.A. Sadeghzadeh^d ; ^{sadeghz@eetd.kntu.ac.ir}Author Vitae
• 关键词：Wideband antenna ; Notch bands ; Planar antennas ; Microstrip technology ; GPS ; Bluetooth ; WiFi ; Portable wireless systems
• 刊名：AEU - International Journal of Electronics and Communications
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：72
• 期：Complete
• 页码：79-85
• 全文大小：2767 K
• 卷排序：72

文摘

Empirical results are presented for a novel miniature planar antenna that operates over a wide bandwidth (500 MHz to 3.05G Hz). The antenna consists of dual-square radiating patches separated by two narrow vertical stubs to reject interferences from GPS, Bluetooth and WiFi bands. Radiating patches and stubs are surrounded by a ground-plane conductor, and the antenna is fed through a common coplanar waveguide transmission line (CPW-TL). The two vertical stubs generate pass-band resonances enabling wideband operation across the following communications standards: cellular, APMS, JCDMA, GSM, DCS, PCS, KPCS, IMT-2000, WCDMA, UMTS and WiMAX. Embedded in the ground-plane conductor is an H-shaped dielectric slit, which has been rotated by 90°, whose function is to reject interferences from GPS, Bluetooth and WiFi bands. Measurements results confirm the antenna exhibits notched characteristics at frequency bands of GPS (1574.4–1576.4 MHz), Bluetooth (2402–2480 MHz) and WiFi (2412–2483.5 MHz). The impedance bandwidth of the antenna is 2.55G Hz for VSWR < 2, which corresponds to a fractional bandwidth of 143.66%. Measured results also confirm that the antenna radiates omnidirectionally in the E-plane with appreciable gain performance over its operating frequency range. The antenna has dimensions of 15 × 15 × 0.8 mm3.