Questions tagged [attenuation]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0
votes
1answer
46 views

FR-4 RF attenuation (when used as an enclosure)

I want to use a blank PCB (no copper) as a panel of an enclosure because it seems to be the cheapest way (Seeedstudio et al.) to have custom holes and cutouts. I wonder if antennas placed behind such ...
1
vote
2answers
91 views

radar attenuation calculations

I would like to ask a few questions that are probably not difficult for engineers to figure out. Personally, I am not an engineer but want to learn about radars. I am having trouble understanding the ...
0
votes
0answers
21 views

I don't know why my attenuation setting changed

I have a question about the change in my attenuation setting. I have a spectrum analyzer. In one measurement the main harmonic is measured to be 342.28 mV and its reference level is 355 mV. The ...
0
votes
1answer
43 views

How to calculate cutoff freqeuncy of Bandpass filter, given an attenuation dB level (OTHER THAN -3DB)

I know that -3dB is the accepted standard, where the power of the signal is at 50%, and that upper and lower cutoff frequencies are calculated with regards to this value, and there are simple formulas ...
0
votes
0answers
24 views

Attenuation factor

In A.C. Circuits if R=2k ohm and c=2 micro farad what is the frequency at which the attenuation factor A drops by 20% of its maximum value? In the attached picture my attempted to solve the question . ...
0
votes
2answers
167 views

Purpose of attenuation before op-amp input

What is the purpose of putting attenuation circuit before op-amp input? I cant find the actual reason for this topology. Is there any reason behind it? Why we need to attenuate the incoming signal but ...
1
vote
0answers
26 views

Signal Attenuation TVS and series resistor

This question is in regards to signal attenuation on high speed data lines like RS-485 (and any others as well). I'm new to the signal world, so please bear with me here. Are there some useful ...
1
vote
2answers
78 views

Effect of wall location for guided wave attenuation

Pardon my ignorance here if this has already been answered. I'm not fully familiar with the English terminology here so my searches came up empty. If there is any keyword I’m missing or I’m not using ...
0
votes
1answer
29 views

LTSpice transient analysis and current amplification problem

Im simulating LC circuit in LTSpice: It's tuned at resonance at 1 MHz in the transient response simulation plotting the source and R1 current. Both of which are equal in amplitude 600mA but with a ...
0
votes
1answer
46 views

How to interpret the vertical axis of this attenuation plot?

How can I interpret the following curve for this toroidal ferrite? It shows the attenuation vs frequency. But the vertical axis is not dB, it is impedance in Ohm. This is unusual for me. How can I ...
4
votes
5answers
2k views

Running baseband analog audio signal over cat 5 cable [closed]

What will happen to a single ended (not differential) 1Vpp analog audio signal(4khz bandwidth, not modulated) if it runs through long cat5 cable (length can be 50 meters)? How much signal voltage can ...
0
votes
1answer
33 views

Difference two attenuation constant

When finding parameters for electromagnetic waves and transmission lines, we can find various characteristics including attenuation and characteristic impedance. \$\alpha\$ is attenuation constant. 1-...
0
votes
1answer
151 views

Best way to attenuate R2R DAC output?

Given an N-bit R2R DAC, with input voltages of e.g. 0-3.3 volts, what is the the best way (signal integrity and quality maintained) to attenuate its output voltage to a range e.g. 0-.7 volts for a VGA ...
1
vote
1answer
95 views

What is rapid signal attenuation?

Attenuation describes the weakening of the signal as it travels from the transmitter to the receiver. However, this textbook describes a concept called "rapid signal attenuation" as a way to allow ...
7
votes
1answer
928 views

Why is an oscilloscope's Attenuation switch placed on the probe?

I'm wondering why an oscilloscope's Attenuation switch is placed on the probe not on the oscilloscope's body (like the AC/DC Coupling switch that's placed on the scope body not on the probe)?