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45 articles for “amplifier”
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High frequency design approach and feasibility study of HBT based W-band (90.0GHz-100.0GHz) amplifier using 130nm SiGe based BiCMOS technology
Abstract: This paper present high frequency design approach and feasibility study of HBT (Hetero Junction Bipolar Transistor) based two stage cascode amplifiers at W-band (90.0GHz-100.0GHz). The proposed amplifier has design using 130nm SiGe based BiCMOS technology. This paper used low cost technology for designing of w-band amplifier and this is novelty of this paper. The schematic design and feasibility study has been carried out using Cadence software. The selection of active …
Published in International Journal of Digital Communication and Analog Signals · Vol. 7, Issue 2, 2021 · pp. 1–7 Read article
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Applications of Trans-Conductance Amplifier in CMOS
Abstract: Abstract: An output voltage proportionate to an input current is produced by the operating trans conductance amplifier. In this regard, it is equivalent to the fundamental purpose of the solid-state devices that make it possible. The operational transconductance amplifier (OTA) is a very adaptable and essential part of contemporary analog and mixed-signal electronic circuits because it produces an output voltage proportionate to an input current. With the extra advantage of …
Published in International Journal of Analog Integrated Circuits · Vol. 11, Issue 2, 2025 · pp. 1–6 Read article
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A Low-Power Chopper-Stabilized Amplifier forHigh-Resolution Biomedical Signal Acquisition
Abstract: Biomedical signal acquisition systems such as ECG, EEG, and EMG require analog front-end (AFE) circuits capable of amplifying extremely small, low-frequency physiological signals in the presence of noise, interference, and motion-induced artifacts. These signals usually fall within the sub-millivolt range and are highly susceptible to low-frequency noise and amplifier offset. Chopper-stabilized amplifiers offer a compelling solution by suppressing flicker noise (1/f noise) and minimizing input- referred offset, especially for low-frequency …
Published in International Journal of Embedded Systems and Emerging Technologies · Vol. 12, Issue 1, 2026 · pp. 1–14 Read article
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Design of CMOS Operational Amplifier in 180 nm Technology
Abstract: In this paper, a method for designing a two stage Complementary Metal oxide semiconductor (CMOS) operational amplifier using 180 nm technology is suggested. CMOS technology is used in digital logic circuits, microprocessors and to construct integrated circuits. CMOS has almost no static power dissipation. This technology offers high, symmetrical noise margins, high input and low output impedance. An operational amplifier is a DC coupled amplifier which offers high gain and …
Published in International Journal of Analog Integrated Circuits · Vol. 5, Issue 1, 2019 · pp. 5–14 Read article
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Design of a Low-Power CMOS Operational Amplifier for Portable BiomedicalApplications.
Abstract: Portable biomedical devices such as ECG, EEG, and wearable health monitors require analogfront-end circuits that operate at extremely low power while maintaining sufficient gain,bandwidth, and noise performance. Among these circuits, the operational amplifier plays acritical role in signal amplification and conditioning. This paper presents the design andanalysis of a low-power CMOS operational amplifier optimized for portable biomedicalapplications. The proposed amplifier employs a two-stage architecture using power-efficientbiasing techniques to achieve low …
Published in International Journal of Analog Integrated Circuits · Vol. 11, Issue 2, 2025 · pp. 19–25 Read article
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Operational-Amplifier-Based Realization of a 1-BitArithmetic Logic Unit: Design, Implementation, and Experimental Validation
Abstract: This work presents the design, construction, and experimental evaluation of a 1-bit Arithmetic Logic Unit (ALU) implemented entirely with operational amplifiers (op-amps), using only LM324 devices, passive components, and a dual-polarity ±12 V supply on a breadboard prototype. The ALU per- forms eight fundamental arithmetic and logic operations, addition, subtraction, AND, OR, NOT, NAND, NOR, and XOR, by combining op-amp comparator-mode logic gates with op-amp-based summing and difference amplifiers for …
Published in International Journal of Analog Integrated Circuits · Vol. 12, Issue 2, 2026 Read article
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Effective Power Theft Identification in Advanced Metering Infrastructure with the Use of Smart Metre Data – A Review
Abstract: Power theft, also known as the unlawful act of stealing electrical energy, encompasses a range of illegal actions, such as tampering with meters, unauthorized connections, billing discrepancies, and unpaid bills. With advancements in electronic meters, tampering and magnetic locking have become virtually impossible. Consequently, the most common types of power theft today involve direct hooking from the power line, physical obstructions, and bypassing the energy meter. Power consumer dishonesty is …
Published in International Journal of Microwave Engineering and Technology · Vol. 10, Issue 2, 2024 · pp. 30–37 Read article
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Design & Simulation of LNA in 90nm CMOS Technology for Radio Receiver using the Cadence Simulation Tool
Abstract: Due to its successful operation in the 2.4 GHz frequency region, often known as the ISM (Industrial, Scientific, and Medical) band, RFICs play a vital role in communication systems. The major parts being used transceivers for frequency translation & amplification are LNA and Mixers. Different types of mixers and LNAs are employed, and different strategies are used to optimize them. In this paper an approach for design and simulation of …
Published in International Journal of Digital Communication and Analog Signals · Vol. 8, Issue 1, 2022 · pp. 1–9 Read article
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Modern Technology Analog Circuits:Applications and Challenges - An Exploration
Abstract: An analog circuit is an electronic system that processes signals that vary continuously. The signals reflect physical quantities, such as sound, temperature or light, as proportionate levels of voltage or current. However, they are not digital circuits. They operate on a continuous spectrum. They use resistors, capacitors, and transistors, and can amplify, filter, or otherwise alter signals. Analog circuits are still a vital feature of electronic systems today, allowing continuous-time …
Published in International Journal of Analog Integrated Circuits · Vol. 12, Issue 1, 2026 · pp. 14–23 Read article
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Review Paper on Load Sensing Seat with Light and Fan Control
Abstract: ABSTRACTThe Project ‘Load Sensing Seat with Light and Fan Control using ATmega8 microcontroller'. We use two parts in this project includes Load cell and ATmega8 microcontroller. A load cell is used to control a fan using the ATmega8 microcontroller. Load cell that is embedded into seats to detect if the human is sitting on it. The load cell will give the signal to the hx711 load cell amplifier which gives …
Published in International Journal of Digital Communication and Analog Signals · Vol. 6, Issue 1, 2020 Read article
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Power Amplification based on Bulk-Drive
Abstract: ABSTRACTThis paper presents a fully integrated, low transmit-power and high-efficiency power amplifier (PA) for low-power transmitters such as wireless sensor networks (WSN). Power Amplification is a major problem in power system network all over the world, which is illegal and should be strictly prohibited, it is highly impossible due to the linear relation between Voltage and Current. Power amplification can be defined as the amplification of the electrical power without …
Published in International Journal of Microwave Engineering and Technology · Vol. 5, Issue 2, 2019 · pp. 21–29 Read article
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Switch-Mode MOSFETs for Class A Radio Frequency Amplification
Abstract: Vertical double diffused MOSFETs (“VDMOSFETs”) developed for switching power supplies were successfully used in high voltage, high frequency linear amplifier circuits. These high voltage power switches are surprisingly useful for linear RF power amplifiers and transmitters. In most of theirintended applications such as in switching power supplies or switched digital amplifiers, VDMOSFETs are pulsed by a high voltage and the pulsed output is heavily filtered. This avoids the linear region …
Published in International Journal of Microwave Engineering and Technology · Vol. 9, Issue 1, 2023 · pp. 52–64 Read article
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An Energy-Efficient CMOS Analog Front-End for Wearable Biomedical Monitoring Applications
Abstract: Because wearable biomedical monitoring technologies allow for continuous, real-time, and remote measurement of physiological parameters, they are quickly becoming a key component of contemporary healthcare. These systems place stringent demands on the analog front-end (AFE), which must accurately acquire and condition extremely low-amplitude biopotential signals such as electrocardiogram (ECG), electroencephalogram (EEG), and electromyogram (EMG) while operating under severe power and size constraints. This paper presents the design and simulation of …
Published in International Journal of Microelectronics and Digital integrated circuits · Vol. 12, Issue 1, 2026 · pp. 1–10 Read article
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The Versatility of the IC 741 in Electronic Sensor System Design
Abstract: In the vast and intricate realm of electronics, few components have had as profound an impact onthe development of sensor systems as the humble IC 741. This groundbreaking device wasdesigned to provide a high degree of flexibility and reliability, making it an ideal choice for awide range of applications. The IC 741 is characterized by its high input impedance, low outputimpedance, and high gain, which allow it to amplify weak …
Published in International Journal of Analog Integrated Circuits · Vol. 11, Issue 2, 2025 Read article
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Clinical Evaluation of Mycobacterium Tuberculosis Culture and Multiplex PCR for the Characterization of Multiple Drug Resistance Tuberculosis in Dehradun, Uttarakhand, India
Abstract: Multiple drug resistance (MDR) tuberculosis timely diagnose is of utmost clinical relevance and needs to be diagnose at initial stages for the proper treatment. The current study was done to detect the multiple genes for MDR tuberculosis (TB) in clinical isolates by molecular tools. 186 clinical samples were considered out and subjected for AFB smear preparation, Nested PCR (IS6110) for Mycobacterium tuberculosis complex detection and MDR TB PCR targeting rpoB, …
Published in International Journal of Animal Biotechnology and Applications · Vol. 3, Issue 2, 2017 · pp. 26–31 Read article
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PAPR Reduction in OFDM Using DCT Precoded SLM Technique
Abstract: Orthogonal frequency division multiplexing (OFDM) is a particular form of multi-carrier modulation. OFDM is a combination of modulation and multiplexing which is robust against the multipath effect, intersymbol interference and high spectral efficiency. However, peak-to-average power ratio (PAPR) is a major drawback in the system since this leads to the distortion problem in the linear devices such as the power amplifier (PA). Thus, the PAs require a back-off which is …
Published in International Journal of Digital Communication and Analog Signals · Vol. 4, Issue 1, 2018 · pp. 33–39 Read article
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RF Integrated Circuits: Fundamentals & Basic Concepts
Abstract: Radio Frequency Integrated Circuits (RFICs) are essential building blocks of current wireless communication systems, integrating high frequency analogue components on a single semiconductor chip. Such circuits have a wide use in applications like mobile communication, satellite systems, radar, wireless networking and Internet of Things (IoT) devices. RF integrated circuits are designed to function efficiently at radio frequencies with low power consumption, small size and good performance. The future of wireless …
Published in International Journal of Analog Integrated Circuits · Vol. 12, Issue 1, 2026 · pp. 24–31 Read article
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Mitigation Measures and Disaster Preparedness: Kapkese Landslides in Kokwet Sub-Location, Kericho County, Kenya
Abstract: Abstract: The Kapkese landslide disaster struck again in December 2015, precipitated by intense, prolonged heavy rainfall from El Niño rainstorms that devastated much of Kenya. Located in the remote Kokwet Location within Kipkelion West Constituency, Kenya, this rural village has endured recurrent geohazards, most notably a deadly May 2003 event that buried a homestead, resulting in the tragic loss of a mother and her three young daughters. These incidents have …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 12, Issue 1, 2026 Read article
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From Waves to Wires: The Story of AnalogSignals
Abstract: Analog signals form the foundation of how humans originally captured, communicated, and processed information in electronic devices. Characterized by their continuous fluctuation in amplitude, frequency, and phase, these signals readily replicate real-world phenomena such as sound, light, and temperature. This article covers the history of analog signals from their roots in natural waveforms to their implementation in electrical circuits and communication systems. It addresses essential topics such waveform representation, signal …
Published in International Journal of Digital Communication and Analog Signals · Vol. 12, Issue 1, 2026 · pp. 44–49 Read article
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Unraveling the Health Risks of Microplastics in School Children Water Bottles: A Systematic Review
Abstract: Microplastics (MPs), pervasive environmental pollutants, pose escalating threats to human health, with children emerging as a critically vulnerable population. This systematic review, guided by PRISMA protocols, synthesizes evidence from 2015–2025 on MPs exposure risks from reusable plastic water bottles among school-aged children (4–15 years). Findings reveal significant MPs leaching into drinking water, influenced by bottle material such as PET and PP, usage duration, and cleaning practices. Children ingest an estimated …
Published in International Journal of Environmental Chemistry · Vol. 11, Issue 2, 2025 · pp. 20–35 Read article