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

28 questions with no upvoted or accepted answers
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Can I calculate minimum rise time of a transmission line if I know the length and the loss tangent?

Overview: I am trying to work out if it's possible to transmit my 1.2Gbps MIPI data down a 600mm long flexible PCB strip. Assuming I have the impedance correct, will the signal still be degraded by ...
49 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 ...
207 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 ...
546 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 ...
960 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 ?...
200 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 ...
28 views

Solving PLL Loop BW Transfer Function

𝑍(𝑠)= (1+𝑠.𝐶2.𝑅2)/(𝑠.(𝐴3.𝑠^3+𝐴2.𝑠^2+𝐴1.𝑠+𝐴0) C2 = 0.0000001F R2 = 1000 Ohm A0 = 0.000000106034 A1 = 1.27859848E-12 A2 = 4.5011166848E-18 A3 = 4.31278848E-24 G(𝑠)= (𝐾𝑝𝑑.𝐾𝑣𝑐𝑜.𝑍(𝑠...
57 views

Reducing bandwidth of op amp to eliminate op amp parasitic oscillation

I am using few op amps to amplify a signal coming from a FGEN. My signal from FGEN is around 500Khz-7.5Mhz. Now regardless of the supply, even when the FGEN is disconnected and power the op amp using ...
153 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?
128 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 ...
229 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) ...
38 views

why sometimes we need to use Broadband Transmission (Using Modulation)?

I was reading a textbook which says: Baseband transmission requires that we have a low-pass channel, a channel with a bandwidth that starts from zero. This is the case if we have a dedicated medium(...
18 views

What is the SINR in V2X for different vehicles sharing the same sub-channel?

I read different papers in v2x such as A Two-Stage Resource Allocation for SCMA-Based C-V2X Networks and Deep Reinforcement Learning for Resource Allocation in V2V Communications but I'm really ...
30 views

buffered Op-amplifier

I am trying to simulate a buffer with an op-amp using CMOS, I am using Cadence. The phase margin I am getting is negative (not stable) about -272 deg, I am trying to reach 50 deg for a gain of 86 and ...
45 views

Troubleshooting butterworth bandpass gain stage issues

I am having issues solving the gain stage section of my bandpass filter design. I used a multiple feedback 6th order lowpass and a 6th order sallen-key high pass to get a bandpass filter with cutoff ...
38 views

What is the relation between bandwidth and data rate?

If I have a 20Mhz bandwidth provided by my 2.4ghz router then will my internet speed will be 20M symbols per sec which is equal to 20×4= 80Mbps (considering 16 qam modulator with 4 bits per symbol) Is ...
35 views

LC filter, frequency limit?

Do practical implementations of LC filters have a limited bandwidth over which they operate? ie. Would they start to attenuate less as the frequency of the input signal get very high (MHz->GHz)?
19 views

inclinometers signal bandwidth

the answer here suggests that inclinometers are low bandwidth devices by design. But how low is low ? Or what difference will there be between a 6.25 Hz signal bandwidth device and a 62.5 Hz one ?
73 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 ...
180 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 "...
50 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 ...
122 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 ...
68 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 ...
121 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 ...
115 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 ...
55 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 ...