Monolithic Frequency-Reconfigurable Antenna on Silicon Carbide for Constrained Environments

The paper presents a frequency reconfigurable bowtie antenna designed on silicon carbide (SiC) substrate. A monolithic active antenna is achieved thanks to the co-design method between the active integrated junctions and the bowtie antenna. Indeed, the semiconductor substrate allows doping distributed areas to obtain integrated N
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P
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junction into the substrate co-designed in a same process flow as the antenna. When the junctions are forward biased, they connect a pair of stubs to the antenna creating a second resonant frequency. The global co-design approach offers possibilities to optimize the antenna in both frequencies. In the prototype, the resonant frequency can be switched from 20.5 GHz to 17.3 GHz.