Publications by authors named "Farid Zubir"

In order to implement the fifth generation (5G) communication system for a large number of users, the governments of many countries nominated the low 5G frequency band between 3.3 and 4.3 GHz.

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Microstrip couplers play a crucial role in signal processing and transmission in various applications, including RF and wireless communication, radar systems, and satellites. In this work, a novel microstrip 180° coupler is designed, fabricated and measured. The layout configuration of this coupler is completely new and different from the previously reported Rat-race, branch-line and directional couplers.

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The key elements used for receiving and processing signals in communication systems are the bandpass filters. Initially, a common operating mechanism was applied for the design of broadband filters, i.e.

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A novel three-mode step impedance resonator (TSIR) is developed to design a miniaturized multi-pole microstrip planar ultra-wideband (UWB) filter with independently controlled notched bands at different frequencies is presented in this work. The basic UWB filter consists of four L-shaped λ/4 short-circuited stubs operating in the range of i.e.

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Article Synopsis
  • Reconfigurable antennas are gaining attention for RF energy harvesting due to their ability to selectively operate at different frequencies and polarizations, which is crucial for applications such as 5G mobile communication.
  • The proposed rectenna device features a hybrid reconfigurable antenna that switches between 28GHz and 38GHz, improving rectification efficiency and allowing it to charge a 1-watt rechargeable battery.
  • The design employs 18 PIN diodes to electronically control various states for frequency and polarization reconfiguration, enabling multiple radiation patterns and polarizations, enhancing its functionality for energy harvesting and communication.
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