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• - The dual-frequency helical monopole chip antenna, which combines a helical structure with a package substrate, alongside a linear monopole antenna, enhances the radiation efficiency and achieves a dual-frequency band operation. This antenna configuration yields an efficiency of 45% at 28 GHz and 30% at 60 GHz [8]. Additionally, a square ring resonator (SRR) is employed to counteract the issue of gain reduction. Through experimentation, it was found that a gain decrease of around 7 dBi at 85 GHz can be effectively compensated, and at 81.5 GHz, a maximum gain improvement of 1.61 dBi is achievable [9]. These results underscore the effectiveness of these designs in mitigating gain losses at specific frequencies. |
IEEE/ICACT20240055 Slide.06
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