Questions tagged [bandwidth]

Related to signal processing (a measure of the width of a range of frequencies, measured in hertz) or the rate of data transfer(or throughput) measured in bits per second

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Long-tailed pair - gain and bandwidth

I'm trying to understand this schematic of this differential probe: I marked some blocks. I have some questions about the block I marked "Long-tailed pair" (LTP). I have no experience with LTPs so ...
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2answers
100 views

How to generate 100 A at 20 kHz?

I have interesting problem to overcome and seek some advice. I need to test different hall effect sensors and magnetic cores. I am currently stack at issue of bandwidth. I tested sensors at DC using ...
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38 views

CA3140 wideband output amplifier

The following circuit is nearly exactly what I need for the output stage of my function generator: datasheet: https://www.renesas.com/us/en/www/doc/datasheet/ca3140-a.pdf What I don't understand is ...
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149 views

How to calculate a voltage/current controller bandwidth based on their gains Kp and Ki?

I am doing some experiments with voltage and current controllers, but sometimes my results are not matching what I expected. At the moment, to calculate the bandwidth of a controller, I am taking the ...
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842 views

Bandwidth and Carrier frequency

What is exactly the difference between the Bandwidth and the carrier frequency ? And if we have two channels with the same bandwidth but with different carrier frequency will we have different speeds ?...
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2answers
178 views

What are the connection between bandwidth, Nyquist criteria and quantization?

I am trying to solve the below problem and I was not able to find the relation between bandwidth, Nyquist criteria and quantization. Can you please provide some hint? Imagine that the possible ...
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1answer
109 views

How to calculate the 3dB point?

I understand this until the final two lines. How does he get from 27.8766 to 1149.8hz and 7224.7rad/s?
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117 views

Finding the Analog Bandwidth of a Voltage Controlled Oscillator

We've built a current starved voltage controlled oscillator And tuned it so it works only in the linear region, which means it oscillations between 720-840 mV, and outputs 3.6-4.4 GHz. In order to ...
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1answer
471 views

Parallel RLC Resonance bandwidth

Good day ,I need help in understanding a practice problem that my professor gave us. A parallel resonant circuit has Q = 20 and is resonant at ωO = 10,000 rad/s. If Zin = 5kΩ at ω = ωO what is ...
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2answers
204 views

How does widening the frequency band allows us to make faster pulses in a radio link?

I’m new to radio communication and completely ignorant in the topic. I spent some time writing software which includes calculation of the channel capacity (in bits/second or symbols/second or bauds) ...
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1answer
51 views

op amp design for bandgap

What values of the main parameters of an op amp are suitable in a bandgap reference design? The purpose is to obtain a smaller temperature drift in the range -40 to 125 C. The model I am using now is ...
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62 views

Square wave spectrum and knee frequency

There is this rule of thumb to estimate the required bandwidth of a digital signal by its rise time: $$ \text{f}_{\text{knee}} = \frac{0.5}{\text{t}_{rise}} $$ This knee frequency is described in "...
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38 views

Is there a configuration where a circuit acts as Bandpass filter in one direction and Bandstop in other?

I am not an expert in electronics. Hence, I am looking for a broad conceptual answer. Is it possible to a directional Bandpass/Bandstop filter i.e. Bandpass in one port and Bandstop in another.
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42 views

Convering bandwidth (frequency) to bit rate without knowledge of the modulation?

How would i convert a bandwidth of say 30kHz to bps if I only know the number of bits per sample (4)? (and I was using a two chanel system). I am assuming it is simply 30KHz * 2 * 4 but this may be ...
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44 views

Determining sensor bandwidth

I'm currently working on a project making use of ultrasonic proximity sensors. Unfortunately it seems as though well-documented ones are very few and far between (when compared to PIC or MOSFET ...
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65 views

Bandwidth of triangular wave for desired linearity

I'm attempting to replicate the Wavetek Model 188 Function Generator with original circuitry. This function generator has a 'VCG (Voltage Controlled Generator)' input which allows the user to apply ...
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34 views

Choosing a position sensor (encoder) and obtaining velocity from it

How do I know how many counts per revolution I need for an encoder for my application? I need to be able to accurately capture a 1000 Hz signal on an input side running from 1-133 rev/sec (60-8000 ...
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53 views

Frequency response of the waveguide

So, I have signal in the waveguide that is transmitted by two modes of radiation, for which the delay is for example \$\tau_1=6\,\text{ns},\, \tau_2=6.5\,\text{ns}\$, respectively. And the energy ...
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1answer
85 views

Constant DC Load Stability and Bandwidth slewrate

For this circuit, how do I know if the rise edge was limited by slew rate or bandwidth? What's the effect of R2 and C2 on bandwidth? -3db of this circuit in simulation is 649 kHz, I know in ...
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107 views

bandwidth and phase-locked loop

I've been told that phase-locked loop (PLL) increases the bandwidth and therefore makes the time constant smaller. (\$ \tau = 2Q/\omega_0 \$ and I understand \$Q \propto 1/ \delta\omega_0 \$) I ...
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48 views

IEEE 802.11b bandwidth and data rates

I am self-studying on how 802.11b bandwidth and data rates are calculated, primarily those of 1 and 2 Mbps. These are my understandings, please correct them if they are wrong. Please keep in mind I am ...
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69 views

Transmission and propagation

Two stations are 400km apart from each other. You have access to a 100Mbit/s full duplex radio link which transmits packet of 4000 Bytes in each direction. What is the transmission time? I assume ...
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2answers
91 views

Reduce output noise power while keeping input bandwidth constant

Assume our signal source has a white background noise. The output of this source is connected to our system. We know that increasing the input bandwidth of the system leads to more noise flowing into ...