matching network वाक्य
उदाहरण वाक्य
मोबाइल
- Resonant antennas are expected to be used around a particular " matching network while maintaining the other characteristics ( except for a possible loss of efficiency ).
- The " antenna feed " may refer to all components connecting the antenna to the transmitter or receiver, such as an impedance matching network in addition to the transmission line.
- Antennas based on the dipole ( rather than vertical antennas ) should include a balun in between the transmission line and antenna element, which may be integrated into any such matching network.
- For example, the usual passive Foster impedance matching networks can only match the impedance of an antenna with a transmission line at discrete frequencies, which limits the bandwidth of the antenna.
- In addition, CaliforniaVolunteers developed and maintains the largest online statewide volunteer matching network in the nation on CaliforniaVolunteers . org, and guides policy development to support the nonprofit and service fields.
- Here the signal enters and then passes through a transformer, along with a varactor and related components and forms an electrically-tuned filter / matching network, the 2 meter preamplifier.
- Not being close to 3 / 2 wavelengths, this antenna's impedance has a large ( negative ) reactance and can only be used with an impedance matching network ( or " antenna tuner " ).
- This is most efficiently accomplished using a matching network at the site of the antenna, since simply adjusting a matching network at the transmitter ( or receiver ) would leave the transmission line with a poor standing wave ratio.
- This is most efficiently accomplished using a matching network at the site of the antenna, since simply adjusting a matching network at the transmitter ( or receiver ) would leave the transmission line with a poor standing wave ratio.
- More commonly, the impedance is adjusted at the load ( see below ) with an antenna tuner, a balun, a matching transformer, matching networks composed of inductors and capacitors, or matching sections such as the gamma match.
- Typically a transmitter design includes generation of a carrier signal, which is normally sinusoidal, optionally one or more frequency multiplication stages, a modulator, a power amplifier, and a filter and matching network to connect to an antenna.
- These passive ( and active ) impedance-matching devices are optimized for different applications and include baluns, antenna tuners ( sometimes called ATUs or roller-coasters, because of their appearance ), acoustic horns, matching networks, and terminators.
- The cause of these losses is related to the relatively low radiation resistance of an electrically short radiator with respect to the r-f resistance of the ground system and matching networks, all of which are in series with the antenna current.
- There are no matching network buildings at the bottom of the masts used for medium wave transmission & ndash; the devices for tuning the masts to the transmission line are placed in the open air, similar to those in the longwave antenna system.
- A typical phasor has separate controls to adjust the phase of the current going to each tower, adjustable power divider controls, and a common point impedance matching network to adjust the system input impedance to 50 ohms with no reactance without disturbing the phase or amplitude of the tower currents.
- Matching is a much more critical requirement at RF than it is at voice frequencies, so when cable started to become available that was truly 50 ? a need arose for matching circuits to interface between the new cables and legacy equipment, such as the rather strange 51.5 ? to 50 ? matching network.
- Along with transceivers and separates, the 4-Line included a set of matching accessories including the L-4 linear amplifier, C-4 control console, W-4 and WV-4 power meters, transmit and receive converters for the 50 MHz ( 6 meter ) and 144 MHz ( 2 meter ) bands, and antenna impedance matching networks ( tuners ), the MN-4 and MN-2000.
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