Abstract
To date semiconductor switches are still the main enablers for electrical circuit and system reconfigurability. They however not only consume dynamic power but also dissipate static power, the former for performing on/off operation and latter for holding on/off state. These semiconductor devices are volatile and not energy efficient due to the need for holding voltage and can significantly increase the system power consumption where hundreds and thousands of switches are needed, such as in large reconfigurable intelligent surfaces and large antenna arrays. In this work, we report a non-volatile reconfigurable antenna that can switch between dual-band at 2.4 GHz and 5 GHz to a single band at 3 GHz. The measured results including reflection, gain and radiation patterns reveal promising performance, experimentally demonstrating a new approach of design and realization of RF switch integrated multi-band reconfigurable antennas. This zero-static power mechanism, along with easy fabrication on the flexible substrates would be very beneficial for Internet of Things (IoT) applications.
Highlights
In this technology era, the market demands smart wireless connections to support the growing multi-functional and multi-band mobile devices and cloud-based Internet of Things (IoT) applications [1]–[3]
This paper reports the design and realization of a non-volatile planar inverted F-shaped monopole antenna fabricated on flexible Kapton substrate with the aim of wearable/flexible IoT applications
Leng et al.: Non-Volatile RF Reconfigurable Antenna on Flexible Substrate switch is integrated with the antenna structure and the antenna is capable of switching between dual-band at 2.4 GHz and 5 GHz to single band at 3 GHz with no static power supply
Summary
The market demands smart wireless connections to support the growing multi-functional and multi-band mobile devices and cloud-based IoT applications [1]–[3]. Reconfigurable antennas have attracted significant attention for their frequency reconfigurability in designing a compact system for IoT applications These reconfiguration techniques are either based on microelectromechanical systems (MEMS) [4], PIN diodes [5], varactors and photoconductive elements [6] to change the antenna radiating structure, or on the use of materials such as ferrites [7], liquid crystals [8] or tunable resistive materials such as phase transitional material vanadium dioxide (VO2) [9]. The concept of programmable metallization cell (PMC) is introduced as non-volatile switches require no DC hold voltage [16]. This can significantly increase reconfigurable system energy efficiency. Leng et al.: Non-Volatile RF Reconfigurable Antenna on Flexible Substrate switch is integrated with the antenna structure and the antenna is capable of switching between dual-band at 2.4 GHz and 5 GHz to single band at 3 GHz with no static power supply
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