Questions tagged [receiver]
A receiver is any electronic device that receives an external signal (e.g., radio, electrical or optical) and converts the information carried by them to a usable internal form.
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Is it possible to sense a temperature using an infrared LED?
Is it possible to make a remote thermometer using a standard IR LED as a transmitter and an IR receiver diode as a receiver?
The range is about 5 meters. I know there are chips available for this ...
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Measuring Doppler and Doppler rate at a receiver
I am simulating receiving a digital signal, QAM modulation, raised cosine pulses... from a satellite to a receiver on the ground. I wanted to honestly simulate measuring the Doppler and Doppler rate ...
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What can be done to increase the dynamic range of a FM receiver?
If i have to receive a signal from a far away FM station, nearby stations swamp the receiver if they are both nearby physically or nearby in the spectrum. I believe the AGC in my radio is cutting out ...
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Battery State Indicator LEDs in Wireless Charging
I am working on a custom wireless charging System. I am using the following ICs
Transmitter IC: https://www.analog.com/media/en/technical-documentation/data-sheets/LTC6992-1-6992-2-6992-3-6992-4.pdf
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Books/Material for RF transmitter/receiver design [closed]
I am doing my thesis for my BSc in EE. Due to a lack of equipped laboratories in my universities, I cannot do a project in microwave-integrated circuits, as I would have preferred. I am therefore ...
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Can two or more RF noise signals (or noise sources) still be added together if they have been attenuated below the thermal noise floor?
Can two or more RF noise signals (or noise sources) be attenuated below the thermal noise floor, and still add together to be higher than TNF?
If a noise signal experiences path loss or attenuation ...
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USB 3.1 Super Speed Signal Directions
This is a question about the signaling direction of the unidirectional USB 3.1 Super Speed Signals known as RX+/RX- and TX+/TX-.
Context: Imagine you have a standard USB-C cable, and a phone. On one ...
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Receiving Timestamps from PPS using uBLOX MAX M8C-0 GPS Receiver
I am having problems with sending and receiving the messages. I am using the SDA and SCL lines. My goal it to try to use the PPS to get under 5 millisecond accuracy for timestamp purposes. Could ...
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Modern approach of creating VHF FSK (FM) recieeiver
I need to make a narrow band FM receiver for the VHF band. More specifically, not even FM, but FSK. The operating frequency range should include from 35 to 40 MHz. Frequency deviation is around 0.5 to ...
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How far could I pick up VHF from?
I’m new to electronics but I'm doing my ATPL pilots license soon and am interested in the EM spectrum and in particular, radio waves. I was wondering what factors affect the maximum distance I could ...
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Do all u-blox ZED-F9T input pins have internal pull-up resistors?
The ZED-F9T datasheet says in section 5 Communications Interfaces:
All the inputs have internal pull-up resistors in normal operation and can be left open if not used.
This statement on its own ...
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What's the purpose of VCC_RF for u-blox ZED-F9T GNSS receiver?
The ZED-F9T, and presumably other u-blox GNSS receivers, can power an active antenna with a VCC_RF pin. The VCC_RF voltage is specified as being essentially the same as the module voltage (VCC) (...
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Replace internal antenna with external antenna
I'm trying to figure out whether it's worth trying to replace an internal antenna for an external antenna of a uhf transmitter/receiver to get a stronger signal in order to get more distance from them ...
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WiFi Transmitter/Receiver [closed]
I want to create a small, battery-powered electronic device to detect the presence of AC voltage after a power outage. It would then transmit notifications to that effect.
The two components of the ...
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LNA saturation issues
I'm designing with LNA to receive a BW = 8 MHz signal (channel BW = 25 kHz), see block diagram:
There is a case where an in-band channel signal (or blocker) which is strong enough saturates the LNA ...
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Received power from multiple transmitters
Assuming I have two transmitting systems, feed by identical signals of the same power, \$P_{TX}\$, which are also in-phase.
They are both placed at the same distance to the receiver, and therefore has ...
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What does this circuit do? How can I repurpose / modify it for my needs?
Can someone explain what this circuit does? It is a 433 MHz RF module receiver that is supposed to work with digital signals.
My goal would be to find out if it can be used to receive analog AM ...
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Reducing temperature of the Rx coil in a wireless power transfer circuit
I have currently designed a wireless power transfer circuit which is based on the ZVS principle and Royer circuit.
The issue I am currently facing is that the receiver coil is warming up a fair bit, ...
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Can the DC offset on a line input trigger power amplifier shutdown?
I am looking at a Kenwood HiFi receiver (KR V5090) from the late 90s that sometimes loses sound on one channel.
Granted, it can just be replaced, but I always like to give devices a second chance by ...
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Homodyne receiver bandwidth
I understand that most, if not all, SDRs use direct conversion, since an SDR can receive several channels simultaneously. So how does tuning the VCO work?
Let's assume for simplicity that I need to ...
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DC offset cancellation
I am working on THz detector and was going through research papers.
In the receiver stage a preamplifier is used in the circuit shown below.
Why can't we directly use the amplifier?
How does the dummy ...
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How does an integrating receiver work?
I am reading some papers and in one paper, the working of an integrating receiver is mentioned to remove (periodic) interference from the received signal. The paper explains the working as such:
The ...
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Why does the regenerative circuit not saturate?
In a regenerative receiver, the amplified signal is fed back into the input where it is amplified again and again in a loop. Here is another description of it used in old radios:
It is basically ...
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BLE Sleep and Rx Mode
A Generic Tx Node:
Cycle time - 5s.
Tx Time (wake up, Tx, Sleep back) - 0.1ms -> current consumption 30mA.
Actual Sleep Time (some sleep mode)- 4.9ms -> current consumption 20uA.
However for a ...
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How well synced do digital channels in a phased array need to be?
In order for a narrowband phased array to be coherent channel to channel, what is the maximum timing jitter that can be tolerated between channels? I assume there can be a constant timing error ...
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Does antenna thermal noise matter if noise power is higher?
I'm working on designing a radio system for CubeSats and I want to make sure that the sensitivity of my receiver is as high as it can be. I'm trying to understand what parameters are going to set the ...
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Can I directly use an oscilloscope's FFT function for EMI measurement?
The latest oscilloscopes with FFT and real-time functions are very useful for EMI debugging with a near-field probe, but why can't we just use them for the far-field EMI scan? EMI receivers are much ...
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Using antenna instead of an AC source on the circuit diagram
Here's an LNA circuit I found on google:
Can I replace the AC source with an antenna?
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Is a LNA necessary in RF receiver circuits?
Is it possible to receive signals properly from the transmitter within a short range without a low noise amplifier in the receiver, or does the LNA provide more than power amplification, like helping ...
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How is the PASCO microwave receiver realized?
I took a physical lab course where I worked on the microwave PASCO set-up WA-9316.
Having a little background on electronics, I wondered how their microwave receiver works and found a more or less ...
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Receiver antenna design for reading PIT tags implanted in snakes and reptiles
I am talking to a local conservation outfit trying to replace active implantable radio tags with passive PIT tags (I do not know who the manufacturer is). These active tags are really tiny glass ...
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Clarification on I/Q Mixer output
I'm working on RF Receiver, it is required to use I/Q Mixer for IF downconversion. Specification as follows below
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Magnetron as receiver
If a magnetron is heated, but no high voltage applied, and microwave power of matching frequency is externally applied to its "output", would that produce a voltage across the HV terminals?
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Which noise sources dominate in a receiver?
For a radio receiver that digitizes over-the-air RF signals (such as an SDR), my assumption (as a DSP guy; pardon my hardware ignorance!) has been that thermal noise dominates total receiver noise, ...
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How to determine the radiation pattern of a receiver antenna
I am designing a receiver antenna for a wireless power transfer application.
The transmitter is a 2m x 2m horn antenna array that transmits a power signal at a frequency of 35 GHz from 100 meters away ...
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Receiver circuit design testing
I am trying to make a receiver circuit that is able to receive an LED input (further down the line receiver input from a laser).
Firstly, I am trying to test the photodiode that will be used. I am ...
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What is the recommended Amplifier/Receiver (AVR) for my Surround Sound 5.1 Speakers Configuration?
Here are my speakers & subwoofer configurations, wondering if anyone can help me suggest a minimum AVR configuration I should go with:
I am looking at Harman/Kardon or Denon AVRs.
Little back ...
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VCO generating a lot of electrical noise, picked up by ultrasonic transducer
In my setup, I have a VCO CD4046 Phase Locked Loop IC generating a square wave, and an ultrasonic transducer set that transmits and receives that setup. You can imagine it looking something like this.
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Offsetting an ultrasonic receiver's signal for an amplifier with a floating ground
I have an ultrasonic receiver that I'm putting through an amplifier. I've created a floating ground for the amplifier (because I want to pretend having a negative voltage supply). However, to achieve ...
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How would I make a wireless pressure switch for turning on and off a flash light?
I want to make a wireless pressure switch for a flash light mounted on an airsoft gun
I have figured out that I would have to use an RF transmitter/receiver like this one:
https://www.amazon.com/3-7-...
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Photo Diode Receiver
I have designed a 5KHz Photo Diode Receiver circuit that Consists of a number of blocks. first stage of this circuit is a TIA.
I have problem with DC IR Light (Like SUN Light), when sun light shine on ...
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Estimating Received Signal Strength of a DTV transmitter
Goal:
Estimate the received signal level in dBm (where 0 dBm corresponds to 0.224 volts) on a spectrum analyzer for a given TV transmitter.
Scenario:
I have many details on the transmitter, including ...
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How is our voice tone transmitted and received without the change of our own voice?
For example lets take mobile communication, transmitting and receiving what we speak is fine, but how does it retains different flavors of our unique voice (that is if someone who we knows speaks over ...
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Noob DIY Bluetooth Soldering Question
I need your help to convert my earphone with boom mic to Bluetooth using this transmitter receiver. The problem I am facing is that once connected this device does not use the boom mic rather built in ...
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How does a phase shift keying receiver detect when a new incoming modulated signal is at the input?
This is not a math question.
What I want to know is the physical implementation of the receiver where phase modulated signal is coming to the receiver.
How does the receiver decide when the phase ...
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Is this radio receiver/transmitter plausible?
Previously I have created a simple radio receiver using the schematic below (based off a crystal radio), and I was wondering if the modified circuit which is also below would work for a simple morse-...
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Optical Receivers and Amplifiers
I have been doing some past papers for a university module I am studying. I am not from an electrical engineering background so don’t really know how to attempt the question attached. I would really ...
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Advantages of I and Q receiver over "real" signals receivers
I wanted to know better which are the main advantages of using an I and Q receiver like that:
rather than a simple demodulator whose output is a real signal like that:
Here some advangages are ...
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Using the earth pin on a power outlet as the earth for a crystal radio
Would there be a way to safely use the earth pin from a power outlet as the earth connection for a crystal radio?
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Ethernet maximum current
Is there a maximum current Ethernet receivers and transmitters need to withstand? I haven't found anything regarding that topic
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