Questions tagged [modulation]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
1
vote
1answer
27 views

Difference between AD630 'Phase Comparator' and 'Lock-in Amplifier' modes

The datasheet of the AD630 mentions that the device can be used as a Precision Phase Comparator or as a Lock-in Amplifier. What's the difference? They both seem to map the amplitude of a modulated ...
1
vote
1answer
214 views

How the electronic circuit control laser diode? [closed]

I find this scheme here 1 - is data stream come from computer. This 'data' is an electric signal moudulated by the n°2 2 - this is the electronic circuit inside printer that a) activates the corona ...
0
votes
1answer
38 views

How to turn a photo receptive sensor into an emitter of light? [closed]

I try to understand how is possible to turn a photo receptive sensor into an emitter of light. Settings, tools, modulation..
1
vote
0answers
46 views

What system-electronic components or physic mechanism is used to modulate signals between different devices used in lithography?

I know that pattern generator device (no pattern generator software) is needed to generate a model signal system that help you use electron diffraction for wafer surface printing by the use of the TEM....
3
votes
0answers
42 views

What is PSS waveform formula?

I want to know how is exactly modulated a LTE subcarrier. Since I'm working on Synchronization Signals (P-SS, S-SS) the subcarriers I'm talking about are centered around DC. I have coded the ...
8
votes
1answer
134 views

Why does the LTE Specification define SC-FDMA as the modulation scheme for the reverse link?

The LTE specification specifies SC-FDMA as the encoding scheme for the reverse link (mobile to base station) when the forward link uses OFDMA. What is the reason for the difference?