RF gurus-A question from a wireless dullard

  • Thread starter Thread starter faust9
  • Start date Start date
  • Tags Tags
    Rf Wireless
AI Thread Summary
A user seeks a single IC transceiver for wireless communication over 500 feet, preferring minimal control and programming involvement. They mention potential options from TI, Analog Devices, and Microchip but are open to further suggestions. The user questions whether an 8dBm transmitter and a -100dBm receiver sensitivity would suffice for reliable data transmission without an RF amplifier. They provide additional context about the operating frequency and clear line of sight. Recommendations for specialized forums and companies like Macro Linear Corp for further assistance are also shared.
faust9
Messages
690
Reaction score
2
RF gurus---A question from a wireless dullard

Ok, I need to collect and send data to/from a remote device about 500ft away. I'm looking for a single IC transceiver in a small smt package if possible. I'd like a transceiver that handles the communications with little to no control from either my laptop or the remote device i.e. either end hands 32 bits to the transceiver, something magic happens and the 32 bits appears at the other end. I really don't want to have to write code to control communications from A to B if at all possible. Moreover, I'm looking for something in an ISM band.

I've come across a couple of offerings from TI, Analog devices and Microchip that 'may' fit the bill. Any other suggestions would be greatly appreciated though.

Anywho, here's the question: If my transmitter has a power rating of 8dBm and my receiver has a receiver sensitivity of about -100dBm will I be able to TRx data back and forth across said 500ft without using an RF amp?

I'm an RF novice. I had a class once--years ago--to meet a requirement and then promptly dropped all of the knowledge in the expectation that I'd never have to fiddle with wireless comms. So, any insight into my problem would be greatly appreciated.

As always, thanks in advance for any and all support in my time of need.

[edit] The above transmits at 900'ishMHz using FSK modulation and the area between the device and my PC is fairly clear(a couple of small less than 8' tall trailers if any) if that helps.
 
Last edited:
Engineering news on Phys.org
Anyone? Bueller, Bueller, Bueller. Well, I guess it serves me right. I should have payed more attention in class and retained said information---and text---longer than 14 seconds after the final.

[edit] according to this site: http://huizen.deds.nl/~pa0hoo/helix_wifi/linkbudgetcalc/wlan_budgetcalc.html I should be in the greem even with 0dB antenna gain at both ends. This shouldn't be the case but worse case scenerio...

Anyone out there with an IC recomendation is welcome to respond still.
 
Last edited:
I have dabbled a bit with RF apps (lower freq), but no expert on your question.

If you do not get many volunteers on our forum, you might try one of the specialized
groups like http://www.rfglobalnet.com/forums/ I see they have a forum on short-range wireless and another on Chips For Wireless Applications

Another possibility is http://www.rfcafe.com/phpBB2/index.php

Another company to check is Macro Linear Corp. They have RF tranceiver ICs for 900MHz FSK. Not sure if they meet all your criteria though.
 
Last edited by a moderator:
You could also try contacting one of their apps engineers. Sometime the latency is long but the reply is usually helpful.
 
Hi all I have some confusion about piezoelectrical sensors combination. If i have three acoustic piezoelectrical sensors (with same receive sensitivity in dB ref V/1uPa) placed at specific distance, these sensors receive acoustic signal from a sound source placed at far field distance (Plane Wave) and from broadside. I receive output of these sensors through individual preamplifiers, add them through hardware like summer circuit adder or in software after digitization and in this way got an...
I have recently moved into a new (rather ancient) house and had a few trips of my Residual Current breaker. I dug out my old Socket tester which tell me the three pins are correct. But then the Red warning light tells me my socket(s) fail the loop test. I never had this before but my last house had an overhead supply with no Earth from the company. The tester said "get this checked" and the man said the (high but not ridiculous) earth resistance was acceptable. I stuck a new copper earth...
Thread 'Electromagnet magnetic field issue'
Hi Guys We are a bunch a mechanical engineers trying to build a simple electromagnet. Our design is based on a very similar magnet. However, our version is about 10 times less magnetic and we are wondering why. Our coil has exactly same length, same number of layers and turns. What is possibly wrong? PIN and bracket are made of iron and are in electrical contact, exactly like the reference design. Any help will be appreciated. Thanks. edit: even same wire diameter and coil was wounded by a...
Back
Top