Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Difference b/n GSM at 900MHz and 1800MHz

Status
Not open for further replies.
P

PraveeGoud

Newbie level 3
Joined
Jan 21, 2007
Messages
4
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,319
Hi friends,

I find some where that we are using GSM band at 900MHz and 1800Mhz ranges .

1) Is there any difference between those two ranges ?

2)Bandwidth increases if we go for Higher band i.e 1800MHz ?

Plz clarify me.

Thanks in advance
Pravee Goud
 

PraveeGoud,

As a general rule:

GSM band at 900MHz will propagate further than GSM band at 1800MHz.

The higher the frequency ... the more loss through free space or objects.

for all the factors from the transmitter to the receiver:

Path loss equation formula
where: GTx = transmitter antenna gain
GRx = receiver antenna gain
λ = wavelength (same units as d): Freq=1/λ
d = distance separating Tx and Rx antennas
L = system loss factor (≥ 1)

mindrover
 

    P

    PraveeGoud

    Points: 2
    Helpful Answer Positive Rating
In adition to last reply,
lower area is covered in 1800M frequency band rather than 900M.
In fact, every site(antenna) specializes 1800M band to more near
and non moving moblie stations.
Furthermore, the number of carriers in 1800M band is 374 and it is about
3 times the one in 900MHz (124 carriers).
The band 1800 has more loss, but has higher quality of speech.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top