Physical properties of frequency or regulation

  • #1

Main Question or Discussion Point

Are different electrical frequencies allocated to specific applications because of their properties or to regulate the spectrum so that each assigned frequency range is unique to one entity?

I guess a related question is: Are we going higher in frequency ranges for things like automobile collision avoidance because we are running out of "room" or because it is advantageous to use a higher frequency like 70 GHz vs 20 GHz?
 

Answers and Replies

  • #2
meBigGuy
Gold Member
2,323
405
Yes, Yes, and yes, all of the above. It just depends.

Higher frequencies provide more room/channels. For example, I can't think of any propagation advantages to 5GHz wireless. The transmitters and receivers are more expensive, and you need more power for the same area coverage. But higher frequencies allow tighter beams, which is useful for some applications. And for some applications the limited propagation is useful and the small efficient antennas are convienient. Different frequencies have different propagation characteristics so are useful for different things.
 
  • #3
1,365
343
There are also regulations - allowing only certain frequencies to be used for certain applications. So to gat a little more bandwidth (performance) the next allowed frequency may be much higher.
 

Related Threads on Physical properties of frequency or regulation

  • Last Post
Replies
2
Views
3K
Replies
6
Views
2K
Replies
4
Views
666
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
4
Views
3K
Replies
1
Views
1K
Replies
16
Views
2K
  • Last Post
Replies
1
Views
4K
  • Last Post
Replies
11
Views
4K
  • Last Post
Replies
4
Views
3K
Top