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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66 views

Small wireless transmitter and receiver [closed]

I am looking for suggestions for wireless transmitter/receiver chips/circuitry. I have the following system in mind: Multiple transmitters to one receiver Transmitters do not have access to ...
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2answers
90 views

Designing mil-std-1553 transceiver [closed]

I need to design a mil-std-1553 analog front end transceiver to already designed digital 1553 ip for my ms thesis. So I need to convert digital 3.3V to analog specs level and receive and convert to ...
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4answers
57 views

Signal interference in receiving antenna?

I’ve been scouring the interweebs for some insight into how electrical signals travel in a wire. More specifically, I cannot wrap my head around how a receiving antenna works with hundreds if not ...
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0answers
18 views

Operation explanation of a low-swing differential receiver (amplifier)

The following figure shows an example of a low-swing differential receiver given in Hall's Advanced Signal Integrity for High Speed Digital Designs However, I cannot figure out how this circuit works ...
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1answer
46 views

How is the Tx/Rx Gain calculated in USRP?

I'm using Software Defined Radio NI USRP 2922 (Universal Software Radio Peripheral). I know that USRPs are uncalibrated devices. In many exampls you can set the so called Tx or Rx gain (as in the ...
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1answer
31 views

Radio receiver output selector [duplicate]

I have been given this project for my second year electronic. I have to make a circuit which has 3 audio signal inputs of different shapes like sine, square and triangle waves. The output has to be ...
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46 views

Where can I find how to use those rf transmitter/receiver

I bought those rf trans/receiver (GWB T400) I figured out that the sck, miso and mosi are for the spi communication. Gnd and 3v3 are pretty clear as well but I’m not sure what rst and cs are for. I ...
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2answers
57 views

Standard pin out for 38KHz IR receiver to 3.5mm jack lead?

Is there a (rough) 'standard' for IR receiver 3.5mm jacks? I wish to use one of the many IR receiver to 3.5mm jack leads Ive seen for sale, however none mention the pin out. I'm sure all combinations ...
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1answer
53 views

RF help, difference between using 12V and 5V as power supply voltage

I am currently looking into building a custom RF transmitter. The commercial ones built for Arduinos usually operate at 5V. I was also looking into some RF remotes, and found that they usually use 12V....
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1answer
75 views

Having trouble with an aviation-band receiver

I finished assembling an aviation band receiver that I bought online. I thought it would be good project for my resume, as I am an electrical engineer major at a University in California. I read the ...
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1answer
43 views

Current loop receiver (minimal implementation)

I'm looking for a minimal design of a current loop receiver with the following characteristics: I_in 0-20mA U_in (-24) 0 - 24V. U_out 0 - 3.3V The precision doesn't need to be very high - an output ...
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1answer
42 views

Blocking test for receivers

In a receiver blocking test, I always see the description that "the test is peformed at a signal level 3dB above the required sensitivity". So what is meant by testing the receiver at "...
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1answer
31 views

Digital Communication \$T_x\$ and \$R_x\$ for Dish - Coaxial Cable - TV Setup

I have a question in mind regarding transmitters and receivers. Let's say we have a dish then a coaxial cable connecting our dish to the TV. Can we consider the Dish as a transmitter \$T_x\$ and the ...
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1answer
98 views

How to send this signal to a mixer?

I have the receiver which works when I wire a Hifi on the output. But when I try to send the signal to the port 2/3 of the following mixer then I don't have any signal anymore. I guess I need to ...
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1answer
84 views

How do we tell distance to target at the receiver from frequency modulation?

Was thinking about radar and how to tell distance using FM. If you send a wave with a consistent wavelength of 1 meter, and it hits a target 1000 meters away and then comes back, it will have gone ...
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3answers
119 views

Calculate receiver dynamic range (understanding the effect of FFT processing gain)

I'm attempting calculate the dynamic range of a receiver. That is, the ratio between the maximum and minimum detectable powers at the reception antenna. The receiver is composed of (in order) an ...
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1answer
27 views

Calculating link budget

I was reading and found that there are different ways to calculate "link budget" and I want to know which one is correct because they are confusing to me. For example, some sources state ...
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1answer
117 views

Calculate thermal noise power of receiver

My primary question (addressed at the end of this post) is that I have a voltage noise at the input to an ADC that I'd like to convert to a noise power. The remainder of this post details how I ...
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0answers
68 views

What is the role of R1/C1, R3 in this slicer circuit?

I found the following data slicer circuit: simulate this circuit – Schematic created using CircuitLab The input is a simple NRZ (PAM-2) signal between "Vhigh" and "Vlow" (=...
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0answers
37 views

How to calculate the power dissipation of a receiver and a driver?

I'm using the AM26LV32E receiver and the AM26LV31E driver and need to calculate how much power is dissipated on them (max). I've been told I can calculate this using: (1) For receiver: ...
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2answers
163 views

Does it looks like a bandpass matching network?

I am trying to understand this receiver and figure out what does this L-C network is. I read about matching networks and found this example, I am curious if it is the same thing. is it? In the ...
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1answer
63 views

DC power from speaker amp for power to switch relays?

Can you—or how do you—switch a relay using the power being directed to a speaker from an AV Receiver? Here's what I'm working on: In my kids playroom is an iMac on the East wall, and a projector on ...
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1answer
104 views

SuperHeterodyne receiver

In a superheterodyne receiver, let us assume, I have a signal in the RF range of 88MHz to 108MHz. From what I have read, my understanding is that by tuning the local oscillator frequency, we can make ...
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3answers
524 views

Disconnect car battery with receiver [closed]

I have no clue what I'm doing but I want to prevent anything down the line of my car battery draining it, so I was thinking of somehow disconnecting everything down line while it is off. Pretty sure I ...
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1answer
27 views

RF modules flickering

I have an rf transmitter and receive set up on a basic circuit so that when I connective data pin of the transmitter to the 5v, the receiver should detect it and the LED turns off. This mostly works ...
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2answers
74 views

Crystal radio question [closed]

I plan on trying to make some crystal radio sets. The only place I can do this is on the second story, do I have to add anything to the wire coming up from the ground because I'm on the second story?
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103 views

Fm receiver circuit doubt

I was trying to simulate an FM receiver circuit on LTSpice. The circuit is given on this website I want to know how the correct current/voltage will look around the speaker (modelled as 8-ohm ...
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1answer
85 views

Is it possible to combine two CFU455IT +/-2kHz (4kHz) ceramic filters to get a +/-1.25kHz bandwith (2.5kHz) filter?

Can I put two of these cheap (less than 3USD) and common CFU455IT +/-2kHz (4kHz bandwith -6dB ) ceramic filters in series to get a lower bandwidth good for SSB TX? If I'm correct I will get -12dB at +/...
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17 views

Troubleshooting fried FPV receiver hooked up to SPDT switch

I want to be able to charge a FPV Receiver (specs) via a phone and charge the phone with a battery. I tried using a single pole double throw switch without the power source connected to the phone ...
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1answer
194 views

How to deal with ground in VCCed-chassis device?

I'm restoring old USSR radio receiver ("Okean-209"). I've already resoldered all electrolytic capacitors so audio amplifier works great again (there was very low sound before that). However, there are ...
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1answer
788 views

Understanding this simple FM receiver

I know the theory of FM, but I just can't understand how this simple circuit works. So let's say a radio station is transmitted on 100 MHz, as I understand in this case the oscillator should also ...
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0answers
58 views

Zero - IF receiver main limits

I was reading these slides about receivers architectures, and I have some questions about Zero - IF receivers: Precisely: Why is the spectrum around the carrier (i.e. the 2 "side bands") mirrored ...
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1answer
214 views

Making a Remote Control for My TV from Scratch

This might seem silly to many of you, but I lost my TV remote when I moved awhile back and instead of buying a universal remote for cheap, I want to make a remote for my TV from scratch myself. I'm ...
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1answer
65 views

What IF amplifier configuration can I use in my receiver?

I am making a superhet SSB CW receiver with a crystal filter on the input after the mixer. Do I have to use IF transformers as the coupling method (1) or can I use capacitor coupling with resistors ...
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2answers
219 views

Why does a Double-Balanced Mixer Reject the LO?

Look at the image of the so-called Double-Balanced Mixer (this is the active version). I understand why there is no leakage of the RF frequency in the output (because the LO square wave by which the ...
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2answers
125 views

How to receive the digital data from an ASK/FSK Receiver (E.g. TDA 5210)

While reading the specs on a FSK/ASK Receiver (E.g. TDA 5210 ) I am asking myself how actually the (non Manchester encoded) digital data look like and how to I receive it when sending from another ...
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4answers
204 views

Substitute for 455 kHz Ceramic filters in new designs

I was wondering what has ever happened with the 455 kHz ceramic filters commonly used in the second IF stage of a superhet radio receivers? All but just a very few (and those left over don't seem to ...
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74 views

Concept of matched filter maximising SNR

The above question is a solved question from Digital Communication by Proakis . The question is about matched filter where I know matched filter is used to maximise the signal to noise ratio at the ...
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1answer
40 views

Connecting a CAN node results in infinite errors on the bus

I'm developing a device which is controlled by the received CAN messages. The device should be eventually mounted in a vehicle. The device receives messages only. It doesn't send any messages on the ...
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0answers
98 views

Have trouble designing antenna coil for chip receiver

I'm trying to wind a 125khz rectangle coil antenna for the AS3933 receiver chip. I calculated inductance using this calculator where parameters were: Loop Width:20cm Loop Height:14.5cm Wire Diameter:...
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6answers
2k views

How to end sending data over I2C by Slave or Master?

Let us say a Slave or Master is sending multiple bytes to the receiver on I2C bus and the number of bytes is not defined before hand. So then how will the sender tell the receiver that it has no more ...
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1answer
66 views

RF receiver always having 1 on output

So my problem is I want to build a wireless system with arduino and an RF module. It is like this one: But when I tested the module, with this site: https://www.instructables.com/id/How-to-test-RF-...
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0answers
33 views

Experimental loss measurement of simple wireless link

I connect a simple SDR to a spectrum analyzer (SA) and measure the output power. The SDR outputs a single tone at 1 GHz; between SDR and SA is a lowpass filter: With gain setting GTX1 I measure -53....
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288 views

How to IR LED as half-duplex transceiver or just receiver?

I'm i need to capture IR signals in their raw form from IR remote to analyze them. Currently I'm doing it by connecting logic analyzer directly across led on the remote. I want to skip that step and ...
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1answer
184 views

Active Mixer RF Input Power and Input IP3i, P1dB Question

I am new and learning in this field. The received signal is first amplified with SKY65404 LNA and secondly with HMC313 Amplifier. Lastly it is connected to Active Mixer ADL5801's RFIN pins. In ...
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1answer
50 views

ensuring transducer (transmitter) and receiver polarity

I am trying to implement a simple phased array of 7 transmitters rated 40 kHz. I have a few receivers to measure the acoustic field generated to validate if it works. What is a simple way to measure ...
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1answer
62 views

High - Frequency Carrier Necessity

let's consider a basic scheme of a receiver. Now I have two questions: I was told that the presence of the mixer is important since it is useful to delete the carrier frequency of the received ...
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1answer
104 views

How to physically connect AS3933 to 3D antenna?

I'm trying to breadboard LF frequency receiver circuit using AS3933 receiver chip IC and CAS143-147 3D antenna chip. However I don’t understand how can I connect AS3933 pins to CAS143 on a breadboard. ...
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3answers
89 views

How to decode an IR from device [closed]

I have the Mitsubishi DA-R45P receiver, but I don not have a remote for this device. And without remote this device can not work. I see that there are universal remotes with learn function, but for ...
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1answer
72 views

Can long-range radio waves from an RTV tower penetrate thin plastic composite material next to its source?

We are currently developing a conceptual design for the renovation of Croatia's main RTV tower located on 1033 meter tall peak Sljeme at the Medvednica mountain north of Zagreb. The idea is to ...

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