DESIGN APPROACH TO CMOS BASED CLASS-E AND CLASS-F POWER AMPLIFIERS
... this century, SiGe HBT devices have emerged as an alternative to GaAs because they are able to bridge this integration gap by including both MOS transistors and HBTs on one die, which as a result reduces the cost of transmitter manufacturing. The costs can however be reduced by disregarding HBTs and ...
... this century, SiGe HBT devices have emerged as an alternative to GaAs because they are able to bridge this integration gap by including both MOS transistors and HBTs on one die, which as a result reduces the cost of transmitter manufacturing. The costs can however be reduced by disregarding HBTs and ...
AN923: EFR32 sub-GHz Matching Guide
... operate at significantly different TX power levels as well as under widely differing regulatory standards and harmonic requirements. Also, the radiation efficiency of the antenna selected by the customer is not known in advance. These factors make it difficult for Silicon Labs to conclusively state ...
... operate at significantly different TX power levels as well as under widely differing regulatory standards and harmonic requirements. Also, the radiation efficiency of the antenna selected by the customer is not known in advance. These factors make it difficult for Silicon Labs to conclusively state ...
Use of ferrites in EMI suppression
... to lower frequency intended signal components. When properly selected and implemented, ferrites can thus provide significant EMI reduction while remaining “transparent” to normal circuit operation! For high frequency applications, ferrites should be viewed as frequency dependent resistors. Since the ...
... to lower frequency intended signal components. When properly selected and implemented, ferrites can thus provide significant EMI reduction while remaining “transparent” to normal circuit operation! For high frequency applications, ferrites should be viewed as frequency dependent resistors. Since the ...
a 380 MHz, 25 mA, Triple 2:1 Multiplexers AD8183/AD8185
... This architecture provides drive for a reverse-terminated video load (150 Ω) with low differential gain and phase error for relatively low power consumption. Careful chip design and layout allow excellent crosstalk isolation between channels. ...
... This architecture provides drive for a reverse-terminated video load (150 Ω) with low differential gain and phase error for relatively low power consumption. Careful chip design and layout allow excellent crosstalk isolation between channels. ...
315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range General Description Features
... The MAX1473 fully integrated low-power CMOS superheterodyne receiver is ideal for receiving amplitudeshift-keyed (ASK) data in the 300MHz to 450MHz frequency range. Its signal range is from -114dBm to 0dBm. With few external components and a low-current power-down mode, it is ideal for cost- and pow ...
... The MAX1473 fully integrated low-power CMOS superheterodyne receiver is ideal for receiving amplitudeshift-keyed (ASK) data in the 300MHz to 450MHz frequency range. Its signal range is from -114dBm to 0dBm. With few external components and a low-current power-down mode, it is ideal for cost- and pow ...
AN137 - Accurate Temperature Sensing with an External P
... shield is protecting against capacitive coupling into both traces. Notice that a portion of the traces is not shielded. This area must be kept small and away from noise sources. an137f ...
... shield is protecting against capacitive coupling into both traces. Notice that a portion of the traces is not shielded. This area must be kept small and away from noise sources. an137f ...
Aalborg Universitet in Industrial Power Systems
... was not considered. In addition, the hybrid active filter was proposed for the unified power quality conditioner to address PQ issues in the power distribution system [21]. Several case studies of the hybrid active filter considering optimal voltage or current distortion were conducted in [22]. In p ...
... was not considered. In addition, the hybrid active filter was proposed for the unified power quality conditioner to address PQ issues in the power distribution system [21]. Several case studies of the hybrid active filter considering optimal voltage or current distortion were conducted in [22]. In p ...
Study Guide
... f) Solve Assessment Problems 16.5 and 16.6. 4. Read Sections 16.6 and 16.7. a) How can you approximate the average power delivered to a resistor given the Fourier series representation of the voltage drop across the resistor? b) How can you approximate the average power delivered to a resistor given ...
... f) Solve Assessment Problems 16.5 and 16.6. 4. Read Sections 16.6 and 16.7. a) How can you approximate the average power delivered to a resistor given the Fourier series representation of the voltage drop across the resistor? b) How can you approximate the average power delivered to a resistor given ...
Application Considerations for an Instrumentation Lowpass Filter
... was 100μV, although the maximum guaranteed offset of each op amp over temperature would be 400μV. Because the active (R, C) output filter is driven directly from the DC accurate output of the second LTC1062, impedance scaling is used with the resistor R′. The noise and distortion performance of this ...
... was 100μV, although the maximum guaranteed offset of each op amp over temperature would be 400μV. Because the active (R, C) output filter is driven directly from the DC accurate output of the second LTC1062, impedance scaling is used with the resistor R′. The noise and distortion performance of this ...
FUTURE ANALYSIS TOOLS FOR POWER QUALITY P. Ribeiro, R
... A detailed analysis of distribution systems, loads and other linear system elements is presented, models discussed and a simple but more realistic approach adopted. It consists basically of representing the dominant characteristics of the network using alternative configurations and models. Simpler ...
... A detailed analysis of distribution systems, loads and other linear system elements is presented, models discussed and a simple but more realistic approach adopted. It consists basically of representing the dominant characteristics of the network using alternative configurations and models. Simpler ...
Fast Estimation of State of Charge for Lithium-Ion Batteries
... algorithm and counting the battery charge and discharge capacity. However, this method requires a high accuracy current measurement device and is incapable of performing real-time SOC measurements. Moreover, there is no easy way to acquire the initial SOC values and the defects of larger measurement ...
... algorithm and counting the battery charge and discharge capacity. However, this method requires a high accuracy current measurement device and is incapable of performing real-time SOC measurements. Moreover, there is no easy way to acquire the initial SOC values and the defects of larger measurement ...
current transformer phase shift digital compensation
... obtained results are shown in Table 1. The first part of the table shows a case without compensation. On the basis of these results it can be concluded that the error in the case of inductive load is rather big when the phase error of the current transformer is not compensated for. When thermogene r ...
... obtained results are shown in Table 1. The first part of the table shows a case without compensation. On the basis of these results it can be concluded that the error in the case of inductive load is rather big when the phase error of the current transformer is not compensated for. When thermogene r ...
Improving the Active Power Filter Performance with a Prediction
... N recent years active power filters (APFs) have been widely studied and several methods to control them have been proposed, e.g. [1] – [4]. In harmonic filtering the active filter current reference generation plays an important role: if the reference is poor, a good filtering result cannot be achiev ...
... N recent years active power filters (APFs) have been widely studied and several methods to control them have been proposed, e.g. [1] – [4]. In harmonic filtering the active filter current reference generation plays an important role: if the reference is poor, a good filtering result cannot be achiev ...
TR41.3.6-02-11-007-(word) - Telecommunications Industry
... investigate the possibility of applying the most recent editions of the standards indicated below. ANSI and TIA maintain registers of currently valid national standards published by them. 1. TIA/EIA-IS-968-2001, Telecommunications Telephone Terminal Equipment Requirements for Connection of Terminal ...
... investigate the possibility of applying the most recent editions of the standards indicated below. ANSI and TIA maintain registers of currently valid national standards published by them. 1. TIA/EIA-IS-968-2001, Telecommunications Telephone Terminal Equipment Requirements for Connection of Terminal ...
The Design of Integrated Switches and Phase Shifters
... The effects of RF voltage augmenting the control voltage applied to the FET’s gate usually increases the power handling capability of switches. However, at lower frequencies, when the resistance of the external bias resistor Rg is low compared to the reactance of Cgs, this effect no longer occurs an ...
... The effects of RF voltage augmenting the control voltage applied to the FET’s gate usually increases the power handling capability of switches. However, at lower frequencies, when the resistance of the external bias resistor Rg is low compared to the reactance of Cgs, this effect no longer occurs an ...
power PNU
... Phasor Relationships for Resistors Each circuit element has a relationship between its current and voltage. These can be mapped into phasor relationships very simply for resistors capacitors and inductor. For the resistor, the voltage and current are related via Ohm’s law. As such, the voltage and c ...
... Phasor Relationships for Resistors Each circuit element has a relationship between its current and voltage. These can be mapped into phasor relationships very simply for resistors capacitors and inductor. For the resistor, the voltage and current are related via Ohm’s law. As such, the voltage and c ...
Effect of Strip Thickness - Electrical and Computer Engineering
... GHz, whereas QT is 230 at 2.0 GHz and nearly 160 at 10.0 GHz. This is due to the fact that the radiation losses are higher than conductor and dielectric losses at higher frequencies. On the other hand, a quarter-wave 50-.0 resonator on a 10-mi1 GaAs substrate has Q0 of about 82 at 2.0 GHz and 160 at ...
... GHz, whereas QT is 230 at 2.0 GHz and nearly 160 at 10.0 GHz. This is due to the fact that the radiation losses are higher than conductor and dielectric losses at higher frequencies. On the other hand, a quarter-wave 50-.0 resonator on a 10-mi1 GaAs substrate has Q0 of about 82 at 2.0 GHz and 160 at ...
AD8671-4, 1-2-4, 75uV 12nA, 10MHz, 2.8nVhz.pdf
... Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. N ...
... Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. N ...
This course contains - College of Micronesia
... 1. Describe the basic principles of alternating current and analyze various ac waveforms (such as sine-wave, square-wave, saw tooth-wave, etc…) by determining their frequency/cycle in Hertz, period (Time), and other parameters, such as voltage & current values (as in peak, peak-to-peak, average, and ...
... 1. Describe the basic principles of alternating current and analyze various ac waveforms (such as sine-wave, square-wave, saw tooth-wave, etc…) by determining their frequency/cycle in Hertz, period (Time), and other parameters, such as voltage & current values (as in peak, peak-to-peak, average, and ...
Programmable and Tunable Circuits for Flexible RF Front Ends Naveed Ahsan
... Most of today’s microwave circuits are designed for specific function and special need. There is a growing trend to have flexible and reconfigurable circuits. Circuits that can be digitally programmed to achieve various functions based on specific needs. Realization of high frequency circuit blocks ...
... Most of today’s microwave circuits are designed for specific function and special need. There is a growing trend to have flexible and reconfigurable circuits. Circuits that can be digitally programmed to achieve various functions based on specific needs. Realization of high frequency circuit blocks ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... the noise figure of 0.775 dB at 10 GHz. The input return loss (S11) is equal to -17.35 dB at 10GHz. The output return loss (S22) is equal to -10.24 dB at 10GHz. Also, the isolation (S12) of proposed structure is equal to -18 dB at 10 GHz. The simulation result have shown that the forward gain and no ...
... the noise figure of 0.775 dB at 10 GHz. The input return loss (S11) is equal to -17.35 dB at 10GHz. The output return loss (S22) is equal to -10.24 dB at 10GHz. Also, the isolation (S12) of proposed structure is equal to -18 dB at 10 GHz. The simulation result have shown that the forward gain and no ...
SCIENTIFIC PAPERS OF THE UNIVERSITY OF PARDUBICE
... devices and the solution of EMC problems. 2. EMC of Frequency Control Drive The EMC of devices at network side is protected by network filter and reactors. The network filter is common for all converters in switchboard and it is dimensioned for parallel operation of five drives because the simultane ...
... devices and the solution of EMC problems. 2. EMC of Frequency Control Drive The EMC of devices at network side is protected by network filter and reactors. The network filter is common for all converters in switchboard and it is dimensioned for parallel operation of five drives because the simultane ...
Measuring Loudspeaker Driver Parameters
... overall resistive characteristic at these higher frequencies, so that the performance of the (passive) crossover network is not compromised. This is not necessary with an active crossover. Although a 'pure' inductance is shown in the equivalent circuit, this component is often referred to as 'semi-i ...
... overall resistive characteristic at these higher frequencies, so that the performance of the (passive) crossover network is not compromised. This is not necessary with an active crossover. Although a 'pure' inductance is shown in the equivalent circuit, this component is often referred to as 'semi-i ...
Zo: Transmission Lines, Reflections, and Termination
... particular, consider the fact that the “speed-of-light” propagation delay of electrical signals in wire is on the order of 1.5–2 ns per foot (the exact delay depends on characteristics of the wire). When wire delays are similar to the transition times of the signals that they carry, we must treat wi ...
... particular, consider the fact that the “speed-of-light” propagation delay of electrical signals in wire is on the order of 1.5–2 ns per foot (the exact delay depends on characteristics of the wire). When wire delays are similar to the transition times of the signals that they carry, we must treat wi ...
Stability Analysis of a Matrix Converter Drive
... nonlinear analysis is developed and it is concluded that even when the MC operates below the linear stability limit, large-amplitudes oscillations may occur. Moreover, in [13] an interesting discussion on the switching effect in the stability analysis is presented. Using the nonlinear dynamic theory ...
... nonlinear analysis is developed and it is concluded that even when the MC operates below the linear stability limit, large-amplitudes oscillations may occur. Moreover, in [13] an interesting discussion on the switching effect in the stability analysis is presented. Using the nonlinear dynamic theory ...
Distributed element filter
A distributed element filter is an electronic filter in which capacitance, inductance and resistance (the elements of the circuit) are not localised in discrete capacitors, inductors and resistors as they are in conventional filters. Its purpose is to allow a range of signal frequencies to pass, but to block others. Conventional filters are constructed from inductors and capacitors, and the circuits so built are described by the lumped element model, which considers each element to be ""lumped together"" at one place. That model is conceptually simple, but it becomes increasingly unreliable as the frequency of the signal increases, or equivalently as the wavelength decreases. The distributed element model applies at all frequencies, and is used in transmission line theory; many distributed element components are made of short lengths of transmission line. In the distributed view of circuits, the elements are distributed along the length of conductors and are inextricably mixed together. The filter design is usually concerned only with inductance and capacitance, but because of this mixing of elements they cannot be treated as separate ""lumped"" capacitors and inductors. There is no precise frequency above which distributed element filters must be used but they are especially associated with the microwave band (wavelength less than one metre).Distributed element filters are used in many of the same applications as lumped element filters, such as selectivity of radio channel, bandlimiting of noise and multiplexing of many signals into one channel. Distributed element filters may be constructed to have any of the bandforms possible with lumped elements (low-pass, band-pass, etc.) with the exception of high-pass, which is usually only approximated. All filter classes used in lumped element designs (Butterworth, Chebyshev, etc.) can be implemented using a distributed element approach.There are many component forms used to construct distributed element filters, but all have the common property of causing a discontinuity on the transmission line. These discontinuities present a reactive impedance to a wavefront travelling down the line, and these reactances can be chosen by design to serve as approximations for lumped inductors, capacitors or resonators, as required by the filter.The development of distributed element filters was spurred on by the military need for radar and electronic counter measures during World War II. Lumped element analogue filters had long before been developed but these new military systems operated at microwave frequencies and new filter designs were required. When the war ended, the technology found applications in the microwave links used by telephone companies and other organisations with large fixed-communication networks, such as television broadcasters. Nowadays the technology can be found in several mass-produced consumer items, such as the converters (figure 1 shows an example) used with satellite television dishes.