Browsing by Author "Ali, M. Tanseer"

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A Novel Linearization Technique for RF Power Amplifiers Combining Predistortion and Feedforward Linearizers
(AIUB Journal of Science and Engineering (AJSE), 2025-08-31) Sheikh, Protik Parvez; Bhuyan, Muhibul Haque; Alam, Sadman Shahriar; Ali, M. Tanseer; Shufian, Abu
This paper presents a hybrid linearization technique for improving the performance of Class E radio frequency (RF) power amplifiers (PAs). The method combines feedforward and adaptive RF/digital predistortion to reduce nonlinear distortion without a significant reduction in power-added efficiency (PAE). The proposed approach achieves a reduction of 12.7% in harmonic distortion at 1.22 GHz. Simulation results, carried out using Agilent ADS, show improvements in third-order intermodulation distortion (IMD3), input third-order intercept point (IIP3), and output third-order intercept point (OIP3). Comparative analysis demonstrates that this technique provides superior linearity enhancement compared to conventional analog predistortion. While the results are simulation-based, this work highlights the trade-off between linearity and efficiency.
A Novel Linearization Technique for RF Power Amplifiers Combining Predistortion and Feedforward Linearizers
(Faculty of Science and Technology (FST) and Faculty of Engineering (FE), American International University-Bangladesh, 2026-04-30) Sheikh, Protik Parvez; Bhuyan, Muhibul Haque; Alam, Sadman Shahriar; Ali, M. Tanseer; Shufian, Abu
This paper presents a hybrid linearization technique for improving the performance of Class E radio frequency (RF) power amplifiers (PAs). The method combines feedforward and adaptive RF/digital predistortion to reduce nonlinear distortion without a significant reduction in power-added efficiency (PAE). The proposed approach achieves a reduction of 12.7% in harmonic distortion at 1.22 GHz. Simulation results, carried out using Agilent ADS, show improvements in third-order intermodulation distortion (IMD3), input third-order intercept point (IIP3), and output third-order intercept point (OIP3). Comparative analysis demonstrates that this technique provides superior linearity enhancement compared to conventional analog predistortion. While the results are simulation-based, this work highlights the trade-off between linearity and efficiency.
Impact of Intermediate Indicators on Attaining Cognitive Program Outcomes
(Journal of Engineering Education Transformations, 2024-10-31) Ali, M. Tanseer; Rahman, Md. Abdur; Mannan, Mohammad Abdul; Zishan, Md Saniat Rahman; Chisty, Nafiz Ahmed; Hossain, Chowdhury Akram
Globally, engineering education is revolutionizing through the Outcome Based Education (OBE) model. To achieve accreditation under the requirements of the Washington Accord, the Program Outcome attainment has become a focal point in the Engineering field. Attempts to introduce a new OBE-based curriculum in the Universities of Bangladesh have faced many challenges for teaching staff and students. One of the crucial tasks is to achieve the defined Program Outcomes (POs) through Course Outcomes (COs). In this paper, an intermediate relationship between POs and COs is proposed. A case study and analysis of the proposed Intermediate Indicator to attain Cognitive Domain Program Outcomes has been presented to verify the efficiency and effectiveness of the methodology. Results clearly demonstrate that the Intermediate Indicator is essential to attaining program outcomes through course outcomes.