Improving reception from a transmitter

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Homework Help Overview

The discussion revolves around improving reception from a transmitter operating at a frequency of 1GHz. Participants explore various factors that may influence reception quality, including frequency adjustments and equipment enhancements.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants consider whether decreasing the transmission frequency could enhance reception and discuss the role of antennas and low-noise amplifiers (LNA). Questions are raised about the specifics of the transmission link, including power output, modulation type, and receiver sensitivity.

Discussion Status

The conversation is ongoing, with participants providing insights into the relationship between frequency, distance, and antenna size. Some suggest that the optimal frequency depends on various factors, including the intended use of the transmitter and the environment in which it operates.

Contextual Notes

One participant notes that the scenario involves tracking an elephant with a transmitter, indicating that the context may impose specific constraints on the design and operation of the transmission system.

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Homework Statement



I need some points on how one would improve reception from a transmitter. The frequency of the transmission is originally 1GHz.


The Attempt at a Solution




Would deceasing the transmission frequency improve reception? Any other pointers?
 
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This has not much to do with frequency. Better antenna, and LNA will improve reception considerably.

If you are in a submarine underwater, then you are constrained to use ULF frequencies (ultra low) because higher frequencies are absorbed by the water. Also at 23 GHz and 60 GHz there is a signal absorption from water vapor and oxygen in the air.
 
Tell us a little about your link. What have you tried so far? What kind of antennas does it use? How much power is your transmitter putting out? What kind of modulation are you using? How far away is your receiver? Do you know the sensitivity of your receiver?

Usually frequency is a given, not a variable. What is the purpose of your link?
 
Its a hypothetical question, a transmitter has been attatched to an elephant and it is being used to track the elephant.

Thanks for your help!
 
It's a trade off. Lower frequencies cover longer distances for the same power but require larger antennas. The optimum frequency would depend on factors such as the range, how long you expect the transmitter battery to last, what percentage of the time the transmitter is transmitting and so on. Is your receiver stationary or mobile? Often the mobile receiver uses a directional antenna to determine the direction of the transmitter.

I'm sure these devices already exist. You might investigate what frequency they use.
 

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