A single layer wideband Vivaldi antenna with a novel feed structure

An increase of 7 GHz in the industrial, scientific and medical ISM band around 60 GHz has opened it up for many modern wireless applications such as 5G. This means that new component designs that can cater for this large bandwidth are the need of the hour. The design of a large bandwidth, completely planar and high gain novel Vivaldi antenna is presented. Being a travelling wave antenna and implemented using single metal layer make it an excellent candidate for not only Printed Circuit Board based applications but also the lossy Complementary Metal Oxide Semiconductor technology. For the first time, the feed of the antenna is integrated on the same conductor layer as the antenna itself. Using this design technique the problem of thin gap between the metal layers has been mitigated. The final measured results show that the antenna goes above and beyond ISM band with excellent matching performance from 55 to 84 GHz. A high gain of 7 dBi is maintained over a bandwidth of 57-75 GHz with a radiation efficiency of almost 80%. The results show that the design is quite suitable for integration in a millimetre-wave transceiver system that can support high data rate applications.

Automated summary

The increase of 7 GHz in the ISM band around 60 GHz has opened up possibilities for modern wireless applications like 5G. To cater to this large bandwidth, a large bandwidth, planar and high gain Vivaldi antenna design is presented. The antenna design allows for integration on the same conductor layer, mitigating the problem of thin gap between metal layers. The measured results show excellent matching performance and high gain, making it suitable for high data rate applications in a millimeter-wave transceiver system.