switching amplifier
... communicated and converts it into an electronic signal compatible with the communication medium. • This process involves carrier generation, modulation, and power amplification. • The signal is fed by wire, coaxial cable, or waveguide to an antenna that launches it into free space. • Typical transmi ...
... communicated and converts it into an electronic signal compatible with the communication medium. • This process involves carrier generation, modulation, and power amplification. • The signal is fed by wire, coaxial cable, or waveguide to an antenna that launches it into free space. • Typical transmi ...
Chapter 3: Filters and Transfer Functions
... frequency limit and |HHP| = 0.316 at (f/fc) = 1/3, where the approximate expression yields 0.333, again a deviation of about 5%. For many applications we can approximate |HHP| = 1 if (f/fc) > 3 and |HHP| = (f/fc) if (f/fc) < 1/3. The first order high pass filter blocks the DC or constant part of a s ...
... frequency limit and |HHP| = 0.316 at (f/fc) = 1/3, where the approximate expression yields 0.333, again a deviation of about 5%. For many applications we can approximate |HHP| = 1 if (f/fc) > 3 and |HHP| = (f/fc) if (f/fc) < 1/3. The first order high pass filter blocks the DC or constant part of a s ...
What is power electronics? - Dr. Imtiaz Hussain
... • When the diode is forward biased it begins to conduct with only a small voltage across it. • When the diode is reversed biased only a negligibly small leakage current flow through the device until the reverse breakdown voltage is reached. • In normal operation reverse bias voltage should not reach ...
... • When the diode is forward biased it begins to conduct with only a small voltage across it. • When the diode is reversed biased only a negligibly small leakage current flow through the device until the reverse breakdown voltage is reached. • In normal operation reverse bias voltage should not reach ...
Continued… - Pcpolytechnic
... Peak and Peak to Peak Voltage • Peak to peak values are most often used when measuring the magnitude on the cathode ray oscilloscope (CRO) which is a measuring instrument. • Peak voltage is the voltage measured from baseline of an ac waveform to its maximum or peak level. It is also called as ampli ...
... Peak and Peak to Peak Voltage • Peak to peak values are most often used when measuring the magnitude on the cathode ray oscilloscope (CRO) which is a measuring instrument. • Peak voltage is the voltage measured from baseline of an ac waveform to its maximum or peak level. It is also called as ampli ...
chapter 2 - UniMAP Portal
... to cause a change in the output wave of ±7.5 Vp. Determine Upper and lower side frequencies. Modulation index and percentage modulation. Peak amplitude of the modulated carrier and the upper and lower side frequency voltages. Maximum and minimum amplitudes of the envelope. Expression for the modulat ...
... to cause a change in the output wave of ±7.5 Vp. Determine Upper and lower side frequencies. Modulation index and percentage modulation. Peak amplitude of the modulated carrier and the upper and lower side frequency voltages. Maximum and minimum amplitudes of the envelope. Expression for the modulat ...
MAX16913/MAX16913A Remote Antenna Current-Sense Amplifier and Switches General Description
... current-sense switches feature internal current limiting to prevent system damage due to fault conditions. The MAX16913/MAX16913A input voltage range extends from 5V to 18V, making them ideal for providing phantom power to remote radio-frequency low-noise amplifiers (LNAs) in automotive applications ...
... current-sense switches feature internal current limiting to prevent system damage due to fault conditions. The MAX16913/MAX16913A input voltage range extends from 5V to 18V, making them ideal for providing phantom power to remote radio-frequency low-noise amplifiers (LNAs) in automotive applications ...
Standing wave ratio
In radio engineering and telecommunications, standing wave ratio (SWR) is a measure of impedance matching of loads to the characteristic impedance of a transmission line or waveguide. Impedance mismatches result in standing waves along the transmission line, and SWR is defined as the ratio of the partial standing wave's amplitude at an antinode (maximum) to the amplitude at a node (minimum) along the line.The SWR is usually thought of in terms of the maximum and minimum AC voltages along the transmission line, thus called the voltage standing wave ratio or VSWR (sometimes pronounced ""viswar""). For example, the VSWR value 1.2:1 denotes an AC voltage due to standing waves along the transmission line reaching a peak value 1.2 times that of the minimum AC voltage along that line. The SWR can as well be defined as the ratio of the maximum amplitude to minimum amplitude of the transmission line's currents, electric field strength, or the magnetic field strength. Neglecting transmission line loss, these ratios are identical.The power standing wave ratio (PSWR) is defined as the square of the VSWR, however this terminology has no physical relation to actual powers involved in transmission.The SWR can be measured with an instrument called an SWR meter. Since SWR is defined relative to the transmission line's characteristic impedance, the SWR meter must be constructed for that impedance; in practice most transmission lines used in these applications are coaxial cables with an impedance of either 50 or 75 ohms. Checking the SWR is a standard procedure in a radio station, for instance, to verify impedance matching of the antenna to the transmission line (and transmitter). Unlike connecting an impedance analyzer (or ""impedance bridge"") directly to the antenna (or other load), the SWR does not measure the actual impedance of the load, but quantifies the magnitude of the impedance mismatch just performing a measurement on the transmitter side of the transmission line.