Abstract
Substrate Integrated Coaxial Line (SICL) is a kind of planar coaxial transmission line, which has completely shielded and non-dispersive structure. SICL has the characteristics including wide band, low loss and miniaturization. This paper researched a monopole antenna fed by SICL. A triangle monopole was adopted as the radiator with the frequency range from 1.35GHz to 1.65GHz. The SICL feeding structure was designed and simulated through the full wave electromagnetic simulation technique. The simulated voltage standing wave ratio (VSWR) of designed monopole antenna was less than 2 within the operating frequency range of 1.32GHz to 1.66GHz, and the relative frequency band was about 20%. The designed antenna achieved the anticipated gains which were higher the 2dBi for the operational frequency range. The radiator size of monopole antenna was about 33mm X 15mm × 2mm, and antenna miniaturization was achieved. The discussed monopole antenna fed by SICL showed the nearly omnidirectional radiation pattern and high radiation efficiency. Moreover, it had a simple structure, which was favorable for the practical application.
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