A NOVEL MULTI-BAND CHIP ANTENNA DESIGN for 2.45 GHz and 5 GHz WLAN BANDS

Abstract

In this paper, a planar antenna operating at 2.45-GHz WLAN band, and a chip antenna operating at 2.45/5-GHz WLAN bands are presented. The chip antenna is evolved from the 2.45-GHz planar WLAN antenna. The chip antenna is, in fact, a planar shorted and folded dipole sandwiched by two FR4 layers above the circuit board. Dielectric layers above and below the radiating element form the chip-like package. The chip antenna has a small footprint of 18-mm by 17-mm. It has one RF signal lead and two RF ground leads for easy placement and soldering on the circuit board. 3D electromagnetic simulations have been used extensively for the design. The chip antenna exhibits good impedance and gain behavior.

Keywords

• Electromagnetic analysis,chip antenna,multiple band antenna,wireless LAN,FDTD

2.45 GHz VE 5 GHz WLAN BANTLARINDA ÇALIŞAN YENİ ÇOK-BANTLI BİR YONGA ANTEN TASARIMI

Abstract

Bu makalede, 2.45-GHz WLAN bandında çalışan düzlem bir anten, ve 2.45/5-GHz WLAN bantlarında çalışan bir yonga anten sunulmaktadır. Yonga anten, 2.45-GHz bandında çalışan düzlem WLAN antenden evrimleşmiştir. Yonga anten, aslında, devre kartı üzerinde bulunan iki FR4 dielektrik tabaka arasına sıkıştırılmış, kısa devre edilmiş ve katlanmış bir dipol antendir. Işıma yapan elemanın üzerinde ve altında bulunan dielektrik tabakalar yongaya benzer bir paket oluştururlar. Yonga antenin ayak izi 18mm'ye 17mm'dir. Yonga antenin devre kartı üzerinde kolaylıkla yerleştirilebilmesi ve lehimlenebilmesi için bir işaret ve iki de toprak ucu vardır. Tasarımda 3-boyutlu elektromanyetik simülasyonlar yoğun olarak kullanılmıştır. Yonga anten iyi bir  empedans ve kazanç davranışı sergiler.

Keywords

• Elektomanyetik analiz,yonga anten,çok bantlı anten,telsiz LAN,FDTD

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