Abstract-The integration of a low-profile antenna array with a multicrystalline silicon solar cell capable of powering a low power wireless sensor at 2.45 GHz is reported. Lattice bus bars on the cell are exploited to minimize antenna shadows from low profile antennas and transmission lines for a higher output power. The dual inverted-F array improves gain and beam switching enables the array to sweep a wider coverage angle with larger beamwidths compared to other solar integrated antennas.

Abstract-A simple polarization reconfigurable printed monopole antenna is proposed for wireless applications. Conducting strips are used to connect to the ground plane providing the necessary additional modes for circular-polarization. Linear-polarization, right hand or left hand circular-polarization can be realized using only two PIN diodes, which connect to the ground plane, minimizing their effect on radiation characteristics. The mechanism is described, and key antenna parameters are studied and optimized. The antenna is prototyped and tested for all polarization configurations Index Terms-Monopole antennas, polarization reconfigurable

An ultra-wideband solar Vivaldi antenna is proposed. Cut from amorphous silicon cells, it maintains a peak power at 4.25 V which discounts the need for lossy power management components. The wireless communications device can yield solar energy or be configured as a rectenna for dualenergy harvesting. The solar Vivaldi performs with 0.5-2.8 dBi gain from 0.95-2.45 GHz. In rectenna mode, it covers three bands for wireless energy scavenging.

A low-cost solution for antennas integrated into solar cells, allowing their implementation in solar tracking installations is proposed. The proposed passive device autonomously adjusts the phase shift of a two-element array proportional to the panel rotation. Consequently, the main beam is steered to compensate for panel rotation and maintain a radio link. The proposed device operates for a rotation of ±45°with an amplitude variation of ≤0.4 dB at 2.51 GHz.

Abstract-Dye-sensitised solar cells are proposed as a solarantenna in the form of a proof-of-concept dipole operating at 1.1 GHz. Comprised of glass plates in basic rectangular shapes, various material properties are considered for impact on antenna performance at three phases of assembly. Simulated and empirical analyses indicate how such low-cost solar cells can also realise viable concurrent antenna designs.