Abstract
In line with the harvested energy required for the emerging 5G technology, this article proposes a planar monopole antenna and a rectifier. The proposed Coplanar Waveguide (CPW)-fed antenna is printable on a transparent Poly-Ethylene Terephthalate (PET) substrate. The antenna has a center frequency at 3.51 GHz within a bandwidth of 307 MHz that covers the pioneer 5G band in Malaysia. The designed omnidirectional antenna exhibits the maximum gain of 1.51 dBi with a total efficiency of 95.17 percent. At the antenna frequency, a rectifier has been designed with the voltage doubler technique on a Rogers RO3003 substrate. Over an input RF power of 0 dBm, the rectifier has a power conversion efficiency around 42 percent. The proposed antenna rejects harmonics at least until 16 GHz frequency that makes it compatible with the rectifier to eliminate an additional bandpass filter or impedance matching network from the energy harvesting system.
Highlights
The modern communication system is moving forward to employ different applications of antennas other than only for communication purposes
Advanced Design System (ADS) 2017 electromagnetic co-simulation has been performed for the final layout of the rectifier by employing the replicating models of Schottky diodes and capacitors as per the datasheet and toolkit provided by the corresponding manufacturers
Responses of the rectifier have been obtained analyzed in terms of its DC output voltage and Power Conversion Efficiency (PCE) with respect to the change of Radio Frequency (RF) input power and load resistance
Summary
The modern communication system is moving forward to employ different applications of antennas other than only for communication purposes. At high frequencies, the harvested power is limited by the additional dielectric loss and the parasitic loss added by rectifying diodes. These issues can be addressed by the harmonic suppression ability [4] of antennas and rectifiers. Bandpass filters and further matching networks in typical energy harvesting systems can significantly decrease PCE and remote applicability. To address these issues, in this article, a Planar Monopole Antenna (PMA) and a rectifier have been proposed for the pioneer 5G band in Malaysia.
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