Mohammed Nadhim Abbas
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View article: Multiband in-band full-duplexing using fractal concentric circular antenna arrays
Multiband in-band full-duplexing using fractal concentric circular antenna arrays Open
In this work, we present an innovative approach to enhance multiband communication systems by enabling the antenna subsystems to simultaneously transmit and receive across multiple independent in-band full-duplex (IBFD) channels, i.e. mult…
View article: Concentric Fractal Antenna Arrays For Multiband In-Band Full-Duplex
Concentric Fractal Antenna Arrays For Multiband In-Band Full-Duplex Open
Enabling multiband systems with per-band in-band full duplexing (IBFD) opens avenues for multiband instantaneous feedback sensing and streaming. This letter adopts fractal antenna arrays to achieve multiband-IBFD (MIBFD) antenna subsystems…
View article: All-Optical Universal Logic Gates at Nano-scale Dimensions
All-Optical Universal Logic Gates at Nano-scale Dimensions Open
Though photonics displays an attractive solution to the speed limitation of electronics, decreasing the size of photonic devices is one of the major problems with implementing photonic integrated circuits that are regarded the challenges t…
View article: Dual Ports L-Shaped Microstrip Antenna for WLAN Band Frequency
Dual Ports L-Shaped Microstrip Antenna for WLAN Band Frequency Open
The future of mobile communications is still promising in which the reduced size of mobile handsets is a very attractive technology. MIMO antenna is a considerable design for such a system which required a small size, low mutual coupling, …
View article: Design an All-Optical Combinational Logic Circuits Based on Nano-Ring Insulator-Metal-Insulator Plasmonic Waveguides
Design an All-Optical Combinational Logic Circuits Based on Nano-Ring Insulator-Metal-Insulator Plasmonic Waveguides Open
In this paper, we propose, analyze and simulate a new configuration to simulate all-optical combinational logic functions based on Nano-rings insulator-metal-insulator (IMI) plasmonic waveguides. We used Finite Element Method (FEM) to anal…
View article: Wide-range tunable subwavelength band-stop filter for the far-infrared wavelengths based on single-layer graphene sheet
Wide-range tunable subwavelength band-stop filter for the far-infrared wavelengths based on single-layer graphene sheet Open
A subwavelength metamaterial consisting of array of aluminium conductors is proposed and numerically analyzed using a finite-element method.This material is suggested for a tunable active band-stop filter working in the farinfrared region.…
View article: Mixed Linearity Improvement Techniques for Ultra-wideband Low Noise Amplifier
Mixed Linearity Improvement Techniques for Ultra-wideband Low Noise Amplifier Open
We present the linearization of an ultra-wideband low noise amplifier (UWB-LNA) operating from 2GHz to 11GHz through combining two linearization methods. The used linearization techniques are the combination of post-distortion cancel…
View article: On the Use of 6th-Order Tunable Complementary Metal-Oxide-Semiconductor Varactor based Filter in Ultra-Wideband Low Noise Amplifier
On the Use of 6th-Order Tunable Complementary Metal-Oxide-Semiconductor Varactor based Filter in Ultra-Wideband Low Noise Amplifier Open
Background: The plethora of the emerged radio frequency applications makes the frequency spectrum crowded by many applications and hence the ability to detect specific application’s frequency without distortion is a difficult task to achie…
View article: Pre‐low noise amplifier (LNA) filtering linearisation method for low‐power ultra‐wideband complementary metal oxide semiconductor LNA
Pre‐low noise amplifier (LNA) filtering linearisation method for low‐power ultra‐wideband complementary metal oxide semiconductor LNA Open
This study describes the use of a pre‐low noise amplifier (LNA) third‐order notch filter as a novel linearity enhancement technique for ultra‐wideband complementary metal oxide semiconductor LNA current‐reuse topology. The second/third ord…
View article: Tunable linearity enhancement for 180 nm complementary metal–oxide–semiconductor LNA with active feedback
Tunable linearity enhancement for 180 nm complementary metal–oxide–semiconductor LNA with active feedback Open
The authors present a tunable linearity improvement of complementary metal–oxide–semiconductor low‐noise amplifier (LNA) using derivative superposition method and an active MOS field‐effect transistor feedback transistor. The proposed LNA …
View article: Ultra low power and highly linearized LNA for V-band RF applications in 180 nm CMOS technology
Ultra low power and highly linearized LNA for V-band RF applications in 180 nm CMOS technology Open
In this study, the common gate stage of the conventional inductive degeneration cascode LNA operating in 60 GHz V-band for the upcoming Wi-Fi standard, and 802.11ad standard with data rates up to 7 Gbit/sec was linearized by bilateral CMOS…