Reconfigurable microwave filters using memristors

Abstract

SUMMARYMemristor-based technology could be utilized to enhance the performance of many radio frequency (RF)/ microwave subsystems, such as filters. In this paper, we propose that memristors can potentially be used as switches for designing a reconfigurable dual-band RF/microwave planar filter. We are motivated to use memristors instead of some traditional microwave components because memristors do not require any bias, and no moving parts are involved. The reconfigurable filter is designed for multi-band receiver application using only one memristor-based switch. Circuit-level simulations are used to investigate memristor-based RF/microwave circuits and study their performance. The memristive RF switch is modeled by a resistor in the ON state and by a capacitor in the OFF state. An RF/microwave circuit simulator, NI AWR Microwave Office, is used to verify the expected functionality of the proposed memristor-based filter.

The Dynamic Tunability of Memristor-Based Active Filters

“…In RF/microwave circuit design involving memristors, different authors have proposed electromagnetic devices [8], power dividers, coupled resonator bandpass filters [9], reconfigurable microwave filters [10,11], and phase shifters [12]. An implementation using commercially available memristors in digital electronics is also documented [13].…”

Electromagnetic Interference Effects of Continuous Waves on Memristors: A Simulation Study

“…Moreover, due to their low power consumption, nanometer size, nonvolatile characteristics, good scalability, and compatibility with CMOS technology [ 6 , 7 , 8 ], memristors have been implemented in many applications, such as neuromorphic computing [ 9 , 10 , 11 ], in-memory computing [ 12 ], combinational logic circuits [ 13 , 14 ], spintronic devices, and hardware security systems [ 15 ]. In recent years, in pursuit of reconfigurability and tunability, several studies have applied memristors to RF/microwave circuits and a broader context in electromagnetic systems [ 16 ], such as frequency selective surfaces [ 17 ], the reconfigurable antenna [ 17 ], R.F./microwave filter [ 18 , 19 , 20 , 21 ], and Wilkinson power divider [ 22 ]. As research on memristors advances, new memristive applications are continuously emerging.…”

Remote‐controlled reconfigurable hexa‐band antenna for radio frequency energy harvesting systems

“…The reconfigurable antennas have been replaced over conventional multiband and multiple–input multiple‐output (MIMO) antenna due to its attractive properties such as spectrum sensing, beam reconfigurability, adjust resonant frequency, broadside radiation pattern, improved polarization, and reduce the fading in wireless communication system 1,3,4 . The tuning properties of the reconfigurable antenna can be achieved with several switching elements like optical gates, PIN and varactor diodes, radio frequency micro electromechanical switches (RF‐MEMS), crystal switch, stepper motor, 5 and memristors 6 …”

“…1,3,4 The tuning properties of the reconfigurable antenna can be achieved with several switching elements like optical gates, PIN and varactor diodes, radio frequency micro electromechanical switches (RF-MEMS), crystal switch, stepper motor, 5 and memristors. 6 PIN diodes are generally preferred over switches mentioned above due to its less insertion loss, better isolation, high power handling capacity, switching speed, and low cost. 7,8 Several designs with aforesaid applications have been recently reported such as internet of things (IoT) controlled reconfigurable harvesting antenna, 9 reconfigurable antenna for harvesting systems, 10 frequency and pattern tuned antenna, 11 metamaterial-based fractal reconfigurable antenna, 12 reconfigurable slot loaded antenna, 13 triple band rectenna, 14 energy harvesting using low-cost rectenna, 15 dual-band rectenna, 16 cube-based harvesting antenna, 17 and efficient rectenna for Wireless Fidelity (WiFi) applications 18 and multiband switchable antenna for wireless applications.…”