Questions tagged [transceiver]
Both [tag:transmitter] or [tag:receiver]
0
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1answer
38 views
Multiplexing a 16 button keypad to an 8 button remote control module
I am wanting to multiplex a 16 button keypad to an 8 button RC transceiver so that I can have remote control over 16 functions instead of the standard 8.
The transceiver I am using is the 900MHz ...
1
vote
1answer
48 views
Should I take precautions when using different CAN transceivers on the same bus?
What are the precautions I should be aware of when using different transceivers on a CAN bus?
What I can think of:
They neeed to operate at the same voltage (on ...
1
vote
2answers
72 views
Rs485 to UART convension
I need to send data from one PIC to another PIC by using RS485. As a protocol I use UART. However, I cannot be sure about RS485 transceiver and its circuit. I will be able to supply 5 V and according ...
0
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0answers
21 views
Transceiver IC SN74LV245A at different voltage levels pull up resistor require for current improvement
I've gone through datasheet of IC Page number 12 Figure 5 shows typical application of IC which is 5 to 3.3V compatibility.
In my design My sensor Output is 1.5V to 2.2V so we're planning to have ...
0
votes
2answers
48 views
Integrating IC transceivers on a pcb
I have a question about the difference between transceiver modules and transceiver ICs.
I want to integrate a 2.4GHz transceiver IC - nRF24L01+ onto a PCB instead of using the NRF 24l01+ module.
...
0
votes
1answer
27 views
SN65HVD3x (RS485 Driver) - Termination resistor
I want to use the SN65HVD31DR to connect two microcontrollers together. The connecting cable has an impedance of Z0 = 80Ω. According to the data sheet it is recommended to terminate the connection ...
2
votes
1answer
171 views
Sub 1 GHz communication - long range at 500kbps. Is my range estimate roughly correct?
When researching long range medium bitrate RF comms I came across the TI range. The TI CC1201 transceiver claims -97dBm sensitivity at 500-1000kbps. If the system is on the 868MHz band which is ...
0
votes
2answers
55 views
MAX232 vs TRS202EC Line Drivers
I have used MAX232 as UART serial line driver using 5V power supply. Now I have come across TRS202 chip in a circuit. It also run with 5V power supply. Does this chip has some special difference or is ...
0
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2answers
108 views
How to decrease nrf24l01 transceiver range?
I've just got my Nrf24l01 but then I found out that the working signal range for the module is 100m and above. Our real intention for the module is to let the nrf24l01(Receiver) out of range for about ...
1
vote
1answer
51 views
Using a Bluetooth receiver with 3.5mm jack headset [closed]
For the past 1/2 year I have been using a cordless Bluetooth headset (this one) connected with my motorcycle Garmin GPS device. While connected the device will not allow me to control the volume over ...
0
votes
1answer
37 views
Can I make my cellphone a 3.5mm jack bluetooth transceiver? [closed]
I want to hear sound from my TV using my Beats Solo3 wireless headphones the problem is that the TV doesn't have a bluetooth transmitter (or any wireless connectivity) it has USB and 3.5mm headphone ...
1
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1answer
62 views
To Fail-Safe or not Fail-Safe on RS485/422 Transceiver
I'm stuck on a PCB design issue.
I'm designing a new PCB (Daughter board) that will plug (via DB15-F to DB15-M) onto another PCB (existing Mother board) and the design intent is to take (from the ...
-1
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2answers
74 views
Half-duplex wireless: Is a tuned antenna more important for the transmitter or the receiver?
I intend for this to be a general/conceptual question that could apply to any wireless communication hardware, however I will use a specific example to talk about.
Let's consider the nRF24L01. (...
0
votes
1answer
65 views
DMX receiver 40V signal
I am creating a DMX receiver circuit. The dmx that is received from a controller (USB DMX dongle) is converted via a transceiver (SN75176BP) to a signal which can be understood by an ATMEGA328P.
I ...
0
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0answers
38 views
Equalisation and Pre-emphasis for high speed transceivers
How can we see the effect of equalisation and pre-emphasis in simulation?
Like equalisation is used to overcome the losses which may be because of :
Signal Attenuation
Reflections
Intra-pair ...
0
votes
1answer
57 views
How to model a physical channel using verilog?
I don't have access to high speed transceivers FPGA. So i wish to model the channel of high speed transceivers which is not error free so that i can test my codes if they are working fine or not.
Is ...
0
votes
1answer
77 views
LIN Network without Transceiver (for testing)
My task is to implement LIN network on SPC560P microcontroller. This microcontroller does not have builtin LIN-transceiver, so it provides TX and RX pins. I know Lin network only has one LIN wire, but ...
0
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2answers
24 views
difference between max3387ecug+ and max3387ecug+t
can I know what the difference is between MAX3387ECUG+ and MAX3387ECUG+T, the MAXIM datasheet doesn't seem to point the difference.
2
votes
5answers
552 views
Wirelessly connect several DS18B20 across a house
I am planning on reading temperature data form across my home using several DS18B20s and sending all of the data to a raspberry pi. I have already managed to interpret data from one sensor directly ...
2
votes
0answers
144 views
nRF24L01+ module channel sensitivity and directivity
I want to start a project where I distribute many nRF24L01+ modules across the house. I am pretty sure someone has done that before. But before I wanted to begin I evaluated the modules using two ...
3
votes
1answer
679 views
Simple CAN bus design, communication issues
I am trying to get some simple communication between two boards that I've designed with an ATmega328P microcontroller and MCP2515/MCP2551 combination.
The design is as follows:
I have both ends ...
-1
votes
1answer
33 views
wirelessHD using with FPGA
I going to make a system to transfer data between 2 FPGAs wirelessly with high rate.
I found that wirelessHD method can do this, now what is the required hardware to establish such system?
0
votes
1answer
79 views
How can remove the spikes in common mode rail?
Following is the circuit I am working with.
Intended output across R7 is (60 Ohm resistor) is:
More than 2 mA current for logic high (5 V) input V1
Less than 0.1 mA for logic low (0 V) input V1
...
1
vote
1answer
153 views
Fastest working Wireless communication method between two devices
I attempted to ask this question on the network engineering forum but the mods there think superuser.com is a better place for it, but when I posted there, they think here is the best place for this ...
1
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2answers
230 views
A Single Antenna for Multiple Sub-GHz Receivers
I am thinking about making an inexpensive LoRa geteway by combining eight single-channel RFM95W 915 MHz transceivers. These would just work as receivers, and I would have a 9th one working separately ...
1
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1answer
135 views
Soldering SMA to a Transceiver
I'm a noob in Electronics. I want to use this module that doesn't have SMA or u-fl connector. my Question is how can I use SMA or u-fl connector with this kind of modules or how can I solder them the ...
0
votes
2answers
261 views
Hack fibre optic transceiver for wireless data link
I'm brainstorming ways to implement a high speed wireless laser data link without the exorbitant cost.
Would it be possible to take a standard SFP transceiver module and use that across free space ...
0
votes
1answer
489 views
Antenna for qrp pixie 2 [closed]
I recently set up a qrp pixie 2 transceiver i purchased from Aliexpress.I want to use it for sending morse code,and listening to the shortwave transmissions.and i want to learn more about it.so i ...
0
votes
2answers
156 views
Building a (toy) Ghost Detector
I'd like to build a ghost detector. I'm only just beginning the design stage, and thought I'd reach out for some suggestions.
Receiver: I'm planning to end up with a handheld device with an analog ...
0
votes
4answers
183 views
Multilateration with TOA using lowcost transceivers (like NRF24L01) and uCs
My problem is the following, I would like to localize an object (main node) via multilateration using a wireless sensor network of 4 nodes with less than half a meter accuracy. The equations are ...
1
vote
1answer
138 views
Does 2g/3g rf receive circuit path work for 4g if they are in the same band?
I am wondering that if the rf receive path for gsm/wcdma can be used to receive lte fdd signals? provided that gsm/wcdma/lte are in the same band e.g. band8 downlink frequency 925-960mhz, and the ...
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0answers
44 views
AVR + IEEE 802.15.4 (<1GHz) potential transceivers
I'd appreciate it if someone could offer a couple of suggestions about pairing up an AVR MCU (I'm thinking about using the MEGA162V-8PU ) to a general ISM < 1GHz (transceiver), and the ATTINY85 on ...
0
votes
1answer
130 views
How to decrease range of RF transceiver
I'm working on a solution for 2 devices to communicate with each other over a very short range. A user will be wearing device #1 around their wrist, and in that same hand will be holding device #2. ...
1
vote
2answers
181 views
RF Isolator or Circulator for Commercial Product
Circulator and specifically isolator are used in microwave system to prevent unmatch load damage the transmitter.
As circulator that I seen are very bulky I'm started to think how commercial product ...
0
votes
1answer
142 views
Smaller ultrasonic transceiver
I am a beginner working on my Arduino-based proximity sensor array project, like this one. I have already tested the functionality with single HC-SR04 transmitter/receiver and now I would like to ...
1
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2answers
122 views
What technology to use to send data/Ethernet (about 128 kbps) over copper cable (4km)?
What thechnologies can i use to send data/ethernet (w/ a symmetrical traffic throuput of about 128kbps) over copper cable (4km)?
1)SHDSL would be an option !!(but I couldn't find any chip with ...
0
votes
1answer
145 views
Many Data from Different Transmitters to Single Receiver Simultaneously
In my Project transmitters constantly transmit some data. I want to receive all the data in single receiver at the same time. I searched about RF transmitter and receiver. But Many to One not possible ...
1
vote
3answers
542 views
Identify Symbols on Circuit Diagrams for VHF Radio Build
I found these circuit diagrams for VHF transceiver online, and am having trouble recognizing a number of the symbols. Would you please help me identify the boxed symbols?
Here's what I've got so far:
...
0
votes
1answer
122 views
nrf24l01 transceiver on altera board de2-115 [closed]
I'm trying to use the nrf24l01 transceiver on altera board de2-115. I would like to send a signal from the altera board using this spi module to another spi module and use the spi module on the ...
3
votes
1answer
630 views
Current consumption for RS485 transceivers?
I am building a prototype that uses a RS485 BUS to communicate many devices and current consumption is a crucial part in this project. In order to set the communication up, I have been looking at ...
1
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2answers
293 views
Optional pump capacitor connection on RS232 line driver/receiver Chip
Why is it on RS232 line drivers/receivers such as ICL3222, MAX3222, ADM3222, etc.. the C3 capacitor can be connected either to GND or Vcc?.
There's nothing on the datasheet regarding the differences ...
0
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0answers
218 views
FSK Bandpass Filters for 900 MHz
I'm attempting to design a basic FSK transceiver (architecture shown below) using only discrete components (transistors, diodes, resistors, etc). My idea was to separate the two binary frequency ...
1
vote
2answers
523 views
How are RS 485 transceivers implemented?
I would like to know how transceivers (which are used to send and receive differential signals) are implemented. AFAIK the receiver the transmitter (TX) could be something similar to an H bridge. I ...
0
votes
3answers
113 views
How can a transceiver pin be used if its clock is so much faster than the FPGA clock?
I'm trying to understand how a transceiver pin can actually operate at, say, 2.5GHz given that the clock speed of an FPGA is so much slower. In my understanding, to transmit data you need to ...
1
vote
1answer
199 views
Xilinx PCIe Integrated Endpoint - Using the other transceiver on the tile
This question is specifically about the Spartan 6-75LXT (FG676) but can be applied to any Spartan 6 (and possibly other Xilinx parts as well).
When using the GTP wizard by itself, there are 2 pairs ...
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2answers
56 views
Can I communicate with any sensor/device using a transceiver if they use the same frequency?
If I have a transceiver using 868MHz and connect that to e.g. a Raspberry Pi and start reading from it, will I be able to see all traffic on that frequency happening nearby? So if I have a sensor that ...
0
votes
2answers
61 views
What options do I have to combine and format 18 600Mbps ADC serial streams over QSFP+?
The 18 serial streams are not encoded or scrambled. The idea is to multiplex them onto one or more encoded serial streams at higher rates for onwards transmission over optical fiber.
2
votes
1answer
436 views
How can CAN transceivers ouput CANH=3.5V and CANL=1.5V?
When sending a dominant bit (0bit) on the CAN bus, I understand that CAN transceivers output CANH=3.5V and CANL=1.5V.
But when looking at the schematics of a CAN transceiver, I do not understand how ...
0
votes
1answer
64 views
Intermediate Frequency in transceiver? [closed]
When I learn the transmitter and receiver architecture? They have each own heterondyne architecture they use intermediate frequency to upconvert to higher frequency or downconvert to lower frequency? ...
0
votes
1answer
126 views
Utilizing both TTL and RS-232 level signals from transceiver
In the past I have used Maxim's MAX213CAI part as my RS-232 transceiver with FTDI VCOM chips. In our application we utilize both, the TTL level and the RS-232 level signals, depending on which device ...
