Improvement of the frequency bandwidth of LTCC meander antenna

The paper describes the study of possibility to improve the bandwidth of the LTCC (Low Temperature Cofired Ceramics) antennas. It is well-known that bandwidth broadening of microstrip antennas can be achieved by substrate structurizing. In our paper we describe the influence of an air cavity beneath a radiating patch or strip on the LTCC antenna performance. Results of computer simulations using HFSS™ software are shown. Then, manufacturing process is described. Results of measurement of network parameters and radiaton patterns of the antenna model are presented. Finally, a comparison between measured parameters and computer simulations is discussed.