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With regard to the use of the network in the feedback path of amplifiers it is shown that the unbalanced version of the parallel-T has distinct advantages.
An asymmetric pumping configuration is effective in constructing booster amplifiers.
The techniques developed have potential for measuring dispersion mismatch between larger parallel amplifiers.
Open accessProceedings ArticleDOI
O. Kyaw, Kimberley W. Eccleston 
17 Aug 2002
In this paper we demonstrate that a balanced amplifier employing two single-ended dual-fed distributed amplifiers can operate effectively under class-B operation.
This paper shows that the two most common impedance transformation networks for power amplifiers (PAs) can be designed to achieve optimum transformation at two frequencies.
Proceedings ArticleDOI
01 Nov 2015
The use of parallel amplifiers require a different analysis than that of passive parallel circuits because the signals in the parallel paths are coherent but the noise produced is not coherent and therefore recombines differently than signals.
It is shown that the two input-stage amplifiers of the conventional circuit should be compensated for unity gain.
To the authors' best knowledge, the single-stage DA and the two-cascaded single-stage DA are the widest band amplifiers in any technology reported to date.
To the authors' knowledge, the output power is the best reported in silicon for this frequency range, for amplifiers that do not use elaborate power-combining approaches.
The configuration and algorithms proposed in the paper are proven to be effective for two-wire amplifiers.
These amplifiers are suitable for use In fiber-optic communication systems.
The implication is that the advantages claimed for two-section amplifiers over single-section devices may not be as great as had hitherto been thought.
Both amplifiers show excellent agreement with original simulation.
The results show that the operations of two proposed amplifiers are in accordance with the theories.

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Can i just weigh ash residue and call ti ash content?
5 answers
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How do proximity sensor using infra redwork?
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Proximity sensors utilizing infrared technology work by emitting infrared radiation and then detecting the reflection of this radiation off objects within their detection range. These sensors consist of an infrared emitter to radiate infrared rays, a receiver to capture the reflected rays, and sometimes a filter to modify the detection width. In the case of infra-red proximity fuze systems, the sensors are designed to be sensitive to specific types of radiation, such as that emitted by the skin of a target due to kinetic heating, while being insensitive to other sources like jet-exhaust plume radiation. Additionally, proximity sensing apparatus can involve inductive sensors, resistors, oscillators, and amplifiers to detect changes in amplitude and phase of the current signal when an object approaches the sensor.
How are portable ecg made and what type of electrode is used?
4 answers
Portable ECG devices are made using various types of electrodes such as dry electrodes and capacitive electrodes. Dry electrodes are flexible and can be used for long-term monitoring, offering an alternative to traditional gel electrodes. Capacitive electrodes, on the other hand, are utilized in portable ECG designs for heart rate monitoring, where electrodes are placed on a plastic sheet under the patient's back and processed through signal-conditioning circuits before being displayed on an LCD screen. These electrodes provide comfort, reusability, and accurate heart rate measurements, making them suitable for wearable ECG applications. The development of portable ECG devices with different electrode types aims to enhance convenience, accuracy, and long-term monitoring capabilities for users concerned about their cardiovascular health.
Is the target ppm value for fishpond 300-400?
4 answers
The target ppm value for a fishpond typically involves monitoring various water quality parameters to ensure optimal conditions for aquatic life. Fishpond monitoring systems integrate sensors like temperature, pH, turbidity, and oxygen content detectors to maintain suitable water quality. These systems enable real-time data acquisition and remote monitoring, allowing for automatic adjustments to balance oxygen levels and ensure water quality. By utilizing microprocessors, cameras, and oxygen generators, these systems help in reducing labor costs and guaranteeing good water quality for fish breeding. Therefore, while the specific ppm range may vary based on the fish species and pond conditions, continuous monitoring and control systems play a crucial role in maintaining the desired water quality levels within the fishpond.
Class a class b?
5 answers
Class A and Class B are terms used in various fields, including amplifier design, optical links, psychophysics, and antibiotic resistance detection. In amplifier design, Class-B amplifiers focus on high power output and efficiency, often utilizing resistive and tuned loads for optimal performance. In optical links, a Class-B system demonstrates high linearity and signal power with minimized noise levels, enhancing dynamic range. Psychophysical observations differentiate between Class A, which relates to discriminability of stimuli, and Class B, which pertains to the appearance of stimuli and observer biases, crucial for studying illusions and context effects. Moreover, in antibiotic resistance detection, Class B CPE involves challenging-to-detect resistance mechanisms, where modified testing methods show improved sensitivity and specificity for ESBL detection.
What is the AMPPro?
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Create a checklist on how to test a PNP transistor?
5 answers
To test a PNP transistor, follow this checklist: Bias the transistor to non-linearity using a harmonic-free alternating signal and compare the base and collector currents at higher harmonics to determine the beta value. Establish continuity test circuits to detect short circuits between the base and emitter or emitter and collector, and measure the collector current at a specific base to collector bias with the emitter open. Use an amplifier tuned to the second harmonic of the oscillator frequency and a detector to analyze the collector to base load voltages for beta measurement. Test for base to emitter short circuits by disconnecting the base from the oscillator and connecting it to a resistor while applying negative bias to the emitter. Measure the collector current I CB0 by breaking the emitter circuit and connecting the meter directly to the base.
What is TCAD?
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TCAD, which stands for Technology Computer-Aided Design, is a crucial tool for designing and simulating semiconductor devices. It allows for the creation of models based on current technology nodes, aiding in the analysis of devices like TFET, HEMT, and FINFET. TCAD simulations, conducted using software like Silvaco and Sentaurus, enable researchers to understand semiconductor reliability physics and predict device-level reliability beyond the limitations of SPICE models. Moreover, TCAD simulations can be nonlinear, providing insights into the performance of microwave circuits and active device fabrication technologies. By utilizing TCAD, designers can simulate various parameters like resistivity, strip length, and bulk thickness to optimize the behavior of devices such as AC-coupled LGADs for enhanced spatial resolution.
What is the current state of ECG-based active acquisition in the field of EIT?
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The current state of ECG-based active acquisition in the field of Electrical Impedance Tomography (EIT) involves the development and comparison of various amplifier circuits for ECG recording, including a four-transistor stage band-pass amplifier, a DDA-based fully differential CMOS instrumentation amplifier, and an OTA amplifier using current reuse. Additionally, wearable sensor architectures have been designed to enable synchronous multilead ECG data acquisition alongside frequency-multiplexed EIT measurements, showcasing the feasibility of noninvasive cardiovascular monitoring. Furthermore, advancements in EIT technology have led to the integration of front-end circuits for EEG and EIT acquisition on electrodes, enhancing signal quality and functional integration for brain imaging applications with minimal wiring requirements. These developments highlight the progress and potential for ECG-based active acquisition within the realm of EIT research.
What are the most common instruments used to detect sexual incest marriages?
5 answers
The most common instruments used to detect sexual incest marriages involve DNA typing, which is considered the only unbiased approach for identifying incestuous offspring. In the context of evaluating sexual health after spinal cord injury, various instruments have been developed, with seven validated tools specifically for assessing sexuality in individuals with spinal cord injury. Additionally, the application of engineering tools has led to the development of sophisticated devices to measure human sexual response, highlighting the use of instrumentation for quantitative measurement in this field. On a different note, a detection instrument has been designed for detecting short-circuit points in winding conductor assemblies, showcasing the use of specialized equipment for specific detection purposes.
How to build a Mosfet amplifier?
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To build a MOSFET amplifier, one can consider various approaches outlined in the research papers. One method involves utilizing a MOSFET circuit architecture designed to reduce low-frequency flicker noise, enhancing amplification without significant power consumption. Another innovative approach involves a MESFET amplifier tailored for the Internet of Things, featuring self-powered functionality through thermoelectric conversion and energy recycling mechanisms. Additionally, MOSFET amplifiers can be designed for specific voltage gains by understanding the transconductance and bias point interactions, streamlining the design process for achieving desired performance. By incorporating these insights, one can construct MOSFET amplifiers optimized for various applications, ranging from low noise amplification for wireless signalsto self-powered IoT-oriented amplification systems.