mismatch loss การใช้

• The attenuator reduces the noise source output, but it minimizes mismatch loss.
• In either case there is a mismatch loss of 1絛B, or more.
• Hours later, Claxton's superb career at Hofstra ended with an 86-66 mismatch loss to Oklahoma State.
• In a perfectly matched system Z L = Z o, and there is no mismatch loss.
• Other common RF system components such as splitters, and combiners will generate some amount of mismatch loss.
• The directional arguments are now relative to the receiving antenna, and again A is taken to include ohmic and mismatch losses.
• The capability of switching between horizontal, vertical and circular polarizations can be used to reduce polarization mismatch losses in portable devices.
• Any component of the transmission line that has an input and output will contribute to the overall mismatch loss of the system.
• For example, in mixers mismatch loss occurs when there is an impedance mismatch between the RF port and IF port of the mixer.
• In order to achieve the required spectral shape for low time sidelobes, linear chirps require amplitude weighting and consequently incur a mismatch loss.
• However, the mismatch loss has increased from 0.1 dB to 0.6 dB, but this is still better than the 1.6 dB figure for linear chirps.
• This is most important in antenna systems where mismatch loss in the transmitting and receiving antenna directly contributes to the losses the system including the system noise figure.
• Even modest values of Doppler will result in broadening of the main pulse, raising of the sidelobe levels, increase in mismatch loss and the appearance of new spurious sidelobes.
• While completely eliminating mismatch loss in these components is near impossible, mismatch loss contributions by each component can be minimized by selecting quality components for use in a well designed system.
• While completely eliminating mismatch loss in these components is near impossible, mismatch loss contributions by each component can be minimized by selecting quality components for use in a well designed system.
• Non-linear chirps, however, have the advantage that by achieving the spectral shaping directly, close-in sidelobe levels can be made low with negligible mismatch loss ( typically less than 0.1 dB ).
• Such a scheme will have greater mismatch loss than a true non-linear scheme, so the advantage of greater Doppler tolerance has to be weighed against the disadvantage of the increased mismatch loss.
• Such a scheme will have greater mismatch loss than a true non-linear scheme, so the advantage of greater Doppler tolerance has to be weighed against the disadvantage of the increased mismatch loss.
• In addition to the waveform degradation, the mismatch loss increases to 0.5 dB . The final figure shows the effect of 100 kHz Doppler on a linear chirp which has had amplitude weighting applied to give the same spectral shape as that of the non-linear chirp.