Design narrow-band frequency amplifier (1.5GHz -1.6GHz) based on InGaP Heterojunction Bipolar Transistor (HBT) and GaAs HBT

ABDO zouhair Ballouk; Fawaz Mofdi; Salem Ibrahim

doi:10.31026/j.eng.2021.02.02

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Publication Date

Mon Feb 01 2021

Journal Name

Journal Of Engineering

Volume

27

Issue Number

2

DOI

10.31026/j.eng.2021.02.02

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Design narrow-band frequency amplifier (1.5GHz -1.6GHz) based on InGaP Heterojunction Bipolar Transistor (HBT) and GaAs HBT

Radio Amplifiers

PA

RF Drive Amplifiers

LNA

Low Noise Amplifier

ABDO zouhair Ballouk

Fawaz Mofdi

Salem Ibrahim

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The research aims to design a narrow-band frequency drive amplifier (1.5GHz -1.6GHz), which is used to boost the transmitter amplifier's input signal or amplify the GPS, GlONASS signals at the L1 band.

The Power Amplifier printed circuit board (PCB) prototype was designed using InGaP HBT homogeneous technology transistor and GaAs Heterojunction Bipolar Transistor (HBT) transistor. Two models have been compared; one of the models gave 16dB gain, and the other gave 23dB when using an input power signal (-15dBm). The PCB consumes 2.4W of power and has a physical dimension of 11 x 4 cm.

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Publication Date

Sun Jun 06 2010

Journal Name

Baghdad Science Journal

Stochastic Non-Linear Pseudo-Random Sequence Generator

"Stochastic process

birth and death key generator (BDG)

linear feedback shift register (LFSR)

Pseudo- noise sequence

Auto-correlation function

Periodicity."

Mahmood A.

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Many of the key stream generators which are used in practice are LFSR-based in the sense that they produce the key stream according to a rule y = C(L(x)), where L(x) denotes an internal linear bit stream, produced by small number of parallel linear feedback shift registers (LFSRs), and C denotes some nonlinear compression function. In this paper we combine between the output sequences from the linear feedback shift registers with the sequences out from non linear key generator to get the final very strong key sequence

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Publication Date

Sun May 01 2022

Journal Name

Expert Systems With Applications

Novel large scale brain network models for EEG epileptic pattern generations

Low and high gamma EEG EEG seizure-like signal Connectome-based brain network modelling Temporal dynamics of Stefanescu-Jirsa 2D TVB

Auhood

Bo

Peng

Yan

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Background: Unlike normal EEG patterns, the epileptiform abnormal pattern is characterized by different mor phologies such as the high-frequency oscillations (HFOs) of ripples on spikes, spikes and waves, continuous and sporadic spikes, and ploy2 spikes. Several studies have reported that HFOs can be novel biomarkers in human epilepsy study. S) Method: To regenerate and investigate these patterns, we have proposed three large scale brain network models (BNM by linking the neural mass model (NMM) of Stefanescu-Jirsa 2D (S-J 2D) with our own structural con nectivity derived from the realistic biological data, so called, large-scale connectivity connectome. These models include multiple network connectivity of brain regions at different

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Publication Date

Thu Jun 30 2011

Journal Name

Al-khwarizmi Engineering Journal

Nahrain Mobile Learning System (NMLS)

Nahrain mobile learning system

short message service

wireless application protocols

multimedia messaging service

mobile learning

personal digital assistant

wireless fidelity

general packet radio service

extensible hypertext markup language

java database connectivity

Mahmood Sami

Mumtaz

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The work in this paper involves the planning, design and implementation of a mobile learning system called Nahrain Mobile Learning System (NMLS). This system provides complete teaching resources, which can be accessed by the students, instructors and administrators through the mobile phones. It presents a viable alternative to Electronic learning. It focuses on the mobility and flexibility of the learning practice, and emphasizes the interaction between the learner and learning content. System users are categorized into three categories: administrators, instructors and students. Different learning activities can be carried out throughout the system, offering necessary communication tools to allow the users to communicate with each other

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