Faizah Abu Bakar
Thumbnail Image
Preferred name
Faizah Abu Bakar
Official Name
Faizah, Abu Bakar
Alternative Name
Bakar, Faizah Abu
Bakar, F. A.
Main Affiliation
Scopus Author ID
36809027100
Researcher ID
DWO-5731-2022

Research Output

Filters

15
4 1
15
Reset filters

Settings
Now showing 1 - 10 of 15
Thumbnail Image
Publication

Design of High-Quality Factor Active Indictor Using CMOS 0.18-μm Technology for 5G Applications

2022-01-01 , Ali H.A.A.A. , Sohiful Anuar Zainol Murad , Hasan A.F. , Faizah Abu Bakar , Sapawi R.

This paper presents high quality factor of active inductor circuit for 5G application. The proposed circuit is based on the differential active inductor (DAI) topology. The DAI is designed using CMOS 0.18 μm technology. The quality factor (Q) can be tuned with the current source values, ranging from 0.5 mA to 3 mA, while the voltage can control the inductance values L. Meanwhile, the frequency range can be controlled with the feedback resistance. The simulation results indicate that the Q factor as large as 262.5k can be achieved with inductor values of 10 nH at frequency 3.2 GHz. In addition, the Q factor of 1650 is obtained at 3.5 GHz. The performance comparison with previously published works is also demonstrated and found that the proposed DAI is suitable for 5G application.

View
Thumbnail Image
Publication

Merekabentuk pengesan discas permukaan di dalam ''Inclined-Plane Test" dengan menggunakan kaedah optik

2007 , Muzamir Isa , Baharuddin Ismail , Ismail Daut , Che Mat Hadzer , Faizah Abu Bakar , Mohd Rafi Adzman

Laporan ini bertujuan untuk memberikan seberapa maklumat tentang ciri-ciri aktiviti discas permukaan secara khustmrya dan aktiviti discas sejara secara umumnya serta peringkat-peringkat proses merekabentuk alat pengesan terhadap aktiviti ini menggunakan kaedah optikal ia meliputi kaji selidik dalam teori-teori tentang kejadian discas permukaan, kriteria-kriterianya dan proses bagaimana ia boleh dikesan oleh sesuatu alat pengesan. Objektif utama projek ini dijalankan adalah untuk merekacipta satu alat pengesan yang menggunakan kaedah optik bagi mengesan dan mengenalpasti kejadian aktiviti discas permukaan pada peralatan elektrik terutamanya pada peralatan voltan tinggi. Adalah diharapkan agar alat pengesan yang dihasil daripada projek ini akan dapat digunakan bagi kegunaan untuk mengesan dan seterusnya mengenalpasti lokasi dimana telah berlakunya aktiviti discas permukaan.

View
Thumbnail Image
Publication

High linearity multi-band CMOS low noise amplifier at 2.4/3.5 GHz for 4G/5G applications

2024-02-08 , Sohiful Anuar Zainol Murad , Azizan A. , Faizah Abu Bakar , Ahmad Fariz Hasan , Marzuki A. , Zulkifli T.Z.A.

This paper presents a high linearity multi-band CMOS low noise amplifier (LNA) at 2.4/3.5 GHz for wireless application. The proposed multi-band CMOS LNA is targeted for concurrent 2.4 GHz and 3.5 GHz bands for 4G and 5G wireless technology, respectively. A cascoded topology with bandpass and bandstop filter at the input is utilized to achieve multiple-band frequency at 2.4 GHz and 3.5 GHz. The LNA is implemented and simulated using CMOS 0.13 μm process in Cadence Virtuoso Analog Design Environment software. The simulation results indicate that the gain (S21) of 15 dB/11 dB with the third order intercept point (IIP3) of 2.04 dBm/3.80 dBm at 2.4 GHz/3.5 GHz frequencies are achieved. Meanwhile, the noise figure of 3.0 dB/3.6 dB is obtained with the power consumption of 35.1 mW at 1.0 V supply voltage. The total chip area is 2.61 mm2

View
Thumbnail Image
Publication

A Contemporary Review of High Voltage Partial Discharge Detection and Recognition Techniques

2023-07-01 , Bohari Z.H. , Muzamir Isa , Faizah Abu Bakar , Ahmad Zaidi Abdullah , Ayob Nazmy Nanyan , Nasir M.N.M. , Sulaima M.F. , Ahmad E.Z.

This review article provides a summary of the most advanced approaches and advancements in the detection and recognition of high voltage partial discharge (PD). It discusses numerous detecting technologies, such as electrical, acoustic, and optical approaches, as well as their merits and disadvantages. It also discusses current developments in signal processing and pattern recognition algorithms used for PD detection and classification. Lastly, the study covers the challenges and limitations in high voltage PD detection and identification studies, as well as potential future solutions.

View
Thumbnail Image
Publication

Dual band low noise amplifier: A review analysis

2024-02-08 , Azizan A. , Sohiful Anuar Zainol Murad , Faizah Abu Bakar , Manaf A.A.

This paper discusses a few earlier efforts in the field of multiband low noise amplifier design (LNA). This study will look at a variety of modern multiband LNA designs, focusing on four topologies: induction matching with notch filter, current reused with cascode, current reused with notch filter, and common source with external capacitor. Each architecture has its own set of benefits and drawbacks. In the future, it will be necessary to strike a balance between tradeoffs, eliminate drawbacks, and achieve optimal multiband LNA performance.

View
Thumbnail Image
Publication

A 3.5 GHz hybrid CMOS class E power amplifier with reverse body bias design for 5G applications

2021-05-03 , Ahmad Fariz Hasan , Sohiful Anuar Zainol Murad , Faizah Abu Bakar

A 3.5 GHz CMOS power amplifier (PA) using 0.18 μm Silterra process technology for 5G applications is reported. The proposed circuit consists of two stages. In the first stage, a cascade topology is adopted with a reverse body bias technique to obtain high voltage gain and minimize the current to reduce the power consumption. Meanwhile, a class-E is use in the second stage to obtain high efficiency. The simulation results of propose PA indicate that 22.6 dB of peak power gain (S21), 8.2 dBm of saturated power (Psat) and 54.6% of power added efficiency (PAE) is achieve at 3.5 GHz. These results prove that the proposed PA is suitable for low band 5G applications.

View
Thumbnail Image
Publication

Design of High-Quality Factor Active Indictor Using CMOS 0.18-μm Technology for 5G Applications

2022-01-01 , Ali H.A.A.A. , Sohiful Anuar Zainol Murad , Ahmad Fariz Hasan , Faizah Abu Bakar , Sapawi R.

This paper presents high quality factor of active inductor circuit for 5G application. The proposed circuit is based on the differential active inductor (DAI) topology. The DAI is designed using CMOS 0.18 μm technology. The quality factor (Q) can be tuned with the current source values, ranging from 0.5 mA to 3 mA, while the voltage can control the inductance values L. Meanwhile, the frequency range can be controlled with the feedback resistance. The simulation results indicate that the Q factor as large as 262.5k can be achieved with inductor values of 10 nH at frequency 3.2 GHz. In addition, the Q factor of 1650 is obtained at 3.5 GHz. The performance comparison with previously published works is also demonstrated and found that the proposed DAI is suitable for 5G application.

View
Thumbnail Image
Publication

Compact Parallel Coupled Line Microstrip BPF Design for 5G Applications

2023-01-01 , Anak Temuli H.U. , Khairul Najmy Abdul Rani , Fairul Afzal Ahmad Fuad , Khairil Syahmi Musa , Norfatihah Bahari , Faizah Abu Bakar , Mohd Aminudin Jamlos , Rahayu Y.

A compact parallel coupled line microstrip bandpass filter (BPF) for sub-6 GHz fifth generation (5G) applications is designed operating between edge frequencies of 3.40 and 3.80 GHz. The design is designed and simulated by means of the Advanced Design System (ADS) software using the flame retardant-4 (FR-4) board as the substrate. The BPF design applies the insertion loss method (ILM) to generate a parallel coupled line filter structure that performs passband permission and unwanted noise attenuation below 3.40 GHz and above 3.80 GHz, respectively. Consistent and relevant performances in terms of matching impedance, return loss (S11), insertion loss (S21), voltage standing wave ratio (VSWR), far field radiation pattern, gain, directivity, and radiated efficiency promise the microstrip BPF design has a potential for sub-6 GHz 5G applications.

View
Thumbnail Image
Publication

Design of Internet of Things Based Air Pollution Monitoring System Using ThingSpeak and Blynk Application

2021-07-26 , Sohiful Anuar Zainol Murad , Faizah Abu Bakar , Anishaziela Azizan , Shukri M.A.M.

This paper presents the design of an IoT based air pollution monitoring system to measure carbon dioxide gas, butane gas, humidity and temperature. The hardware consists of MQ-2 gas sensor, ESP8266 Wi-Fi module, DHT22 temperature and humidity sensors. Meanwhile, the software used in this prototype is the Arduino Integrated Development Environment (IDE) written in function C and C++. The monitoring system indicate air quality is below than 100 AQI for safety air quality and more than 200 AQI for hazardous air quality. The green LED illuminated indicates there is no hazardous gas detected. Meantime, when the butane gas or carbon dioxide gas is identified, the red LED is illuminated. All the data are sent through ThingSpeak and Blynk applications. In ThingSpeak and Blynk applications, the data are displayed and updated after detected by the sensors in every 15 seconds and 1 second. In the Blynk application, when the hazardous gas is detected, the Blynk application sends a notification to alert the users immediately.

View
Thumbnail Image
Publication

A 28 GHz 0.18-μm CMOS cascade power amplifier with reverse body bias technique

2019-08-01 , Ahmad Fariz Hasan , Sohiful Anuar Zainol Murad , Faizah Abu Bakar

A 28 GHz power amplifier (PA) using CMOS 0.18 μm Silterra process technology is reported. The cascade configuration has been adopted to obtain high Power Added Efficiency (PAE). To achieve low power consumption, the input stage adopts reverse body bias technique. The simulation results show that the proposed PA consumes 32.03mW and power gain (S21) of 9.51 dB is achieved at 28 GHz. The PA achieves saturated power (Psat) of 11.10 dBm and maximum PAE of 16.55% with output 1-dB compression point (OP1dB) 8.44 dBm. These results demonstrate the proposed power amplifier architecture is suitable for 5G applications.

View