Abstract:

Due to the broadband requirements in the communication field, broadband antennas have become popular today. In recent years, the need for antennas with broadband width has been reduced in military and commercial applications, but the need for antennas with broadband width has increased. In this context, concepts such as compact, light, small size, low cost and broadband width are facing major challenges that need to be implemented by designers of wireless communications systems. In this context, microwave antennas are highlighted with many remarkable features, such as simple structures, small sizes, they can be applied to straight and curved surfaces and they are resistant when applied to hard surfaces. In this work, a microband antenna has been designed with a multi-layer line feed (CPW-fed) structure that works between 3GHz and 11GHz for ultra-wide band applications. The CST Microwave Studio program is designed. The antenna design is designed on a base of 1.56mm thickness FR4 and 4.4 epsilon. The antenna is 24mmx40mm. The bandwidth, the S11 bandwidth and the radiation pattern were studied, the antenna structure that showed best performance by making changes in parameters was determined and the measurements were completed by making production. As a result of the measurements made, the retrograde loss of the antenna model produced between 3GHz and 11GHz - S11<-10dB, the gain was achieved between 1dB and 3.7dB.

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