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Antennas play a vital role in communication systems and can be used to send and receive signals, improving communication quality by compensating for propagation losses. Due to the higher frequency range used in mmW or future terahertz (THz) applications, the antennas used are very small in size. Furthermore, with the development of high system integration, mmW antenna and feed circuit technologies have become increasingly mature, making chip antennas a favorable choice.
In our research, highlighted in [5], we explore how chip antennas achieve high gain and wide bandwidth. A notable feature of our design is the application of a pair of switches, enabling frequency reconfigurability and enhancing bandwidth. We use CMOS technology with high resistivity to improve gain. Additionally, our chip integrates a spherical dielectric resonator and is excited by an on-chip annular resonator. The inclusion of two vertical microstrip line feeds is key to increasing bandwidth, as further detailed in [6].
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IEEE/ICACT20240058 Slide.04
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