modulated carrier

modulated carrier

[′mäj·ə‚lād·əd ′kar·ē·ər]
(communications)
Radio-frequency carrier wave whose amplitude, phase, or frequency has been varied according to the intelligence to be conveyed.
References in periodicals archive ?
At the same time, the modulated carrier signal is coupled back to the reader.
That is, the BPF not only introduces envelope distortions, but also degrades original rising-edge phases hidden in the modulated carrier due to zero-crossing point deviations.
The end user's main aim was to have its own teleport for transmitting its five-channel bouquet -- DVB-S2 modulated carrier -- on Arabsat and Nilesat satellites.
This modulated carrier then feeds the antenna that radiates the data.
Overview of the IEC 61000-4-6 Conducted Susceptibility Requirements Frequency Range 150 kHz to 400 MHz Frequency Step 0.01 x Fundamental Test Level 10 Vrms (96 dB[mu]A in 150-[OMEGA] environment) Modulation 80% AM and pulse modulated carrier using bulk-current injection For transient susceptibility, the electrical fast transient (EFT) test IEC 61000-4-4, or MIL-STD-461F CS106 can be used as an alternative.
where the local amplitude a is the AM component or AM function (its magnitude, [absolute value of a] [greater than or equal to] 0 , is called the image envelope) and c, c(x,y) = exp{j[2[pi]([u.sub.c] x + [v.sub.c] y) + [phi] (x,y)]}, (j = [square root of -1]), is a complex 2D FM modulated carrier, [phi] being the local phase, the PM component or PM function, and [u.sub.c] and [v.sub.c], respectively, being the carrier center spatial frequencies.
These simple pulses can be detected at increased distances by a factor of over ten relative to a modulated carrier.
The resulting data set is large in comparison to linear network parameters, particularly when the input is similar to a digitally modulated carrier. These data sets are being used to build new models and/or verify the non-linear circuit behavior predicted by existing models.
Sensing technologies rely upon the conversion of a carrier signal into a modulated carrier for which the modulation carries the information defining the measurand of interest.
If successive frequency values could be concatenated with no dead time between, the values actually would constitute samples of the modulated carrier. The carrier frequency could be subtracted from that signal leaving the modulation waveform behind.
The FM modulated carrier [x.sub.c](t) by a sinusoidal signal of [[omega].sub.m] = 2[pi][f.sub.m] can be expressed as