Water Level Antenna Design at 20 GHz

Abstract

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Optimizing the Size of A Multi-Layered Patch Antenna for K-Band Applications

“…Compatible with Monolithic Microwave Integrated Circuit (MMIC) designs, such as Cell phones [2], [3] The simplest typical structure of a patch antenna consists of a radiating element printed on a dielectric substrate disposed on a ground plane [4]. At present, satellite communication in the K-band is of major interest for the development of telecommunication systems such as satellite television channels [5],because this band has a large number of unused bandwidth [2] One of the effective techniques for the miniaturization of this type of antenna is the use of a dielectric substrate having a high dielectric constant [6].Indeed, the ceramic materials provide adequate dielectric permittivity; in addition they possess very useful physical properties [7] [8].Several works have been published to increase the bandwidth [9], [10], but they have a relatively large antenna size [11] however we find other works that proposed a miniaturized size but with A very narrow bandwidth [12]. This work presents a miniaturized antenna with a wider bandwidth by using a second layer of the dielectric substrate while introducing an air-filled cavity into the lower substrate of the microstrip antenna.…”