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

PLL simple question??

Status
Not open for further replies.
S

salem_eng1

Member level 2
Joined
Dec 7, 2006
Messages
43
Helped
8
Reputation
16
Reaction score
3
Trophy points
1,288
Location
Egypt
Activity points
1,606
Hi All

I am working nowadays in system design of PLL frequency synthesizer for ZigBee.
From my search on the net and e-books I found some specs but not all I need so any one has this specs or have a simple tutorial for the ZigBee standard and its Physical layer please upload it


The specs I have :
-fc=2405+5*(k-11) MHz , k=11,12,........,26
-frequency range: 2.4GHz<fc<2.4835GHz
-Frequency tolerance: 40ppm
-Channel spacing=5MHz
-Channel B.W=2MHz
-Settling time=190usec
-Phase noise : -80dBc/Hz @ 3.5Mhz , -75 dBc/Hz @ 5Mhz , -105 dBc/Hz @ 10MHz

The specs I need
-Minimum SNR at the receiver input
-Minimum Rx power.
-Maximum Rx power
-spurs level at 5,10,15 MHz offset

My question is that I am not sure from the specs I have so any one can correct it to me if there is any mistake or tell me how to check it is right also I need the other specs I don't have can any one tell me how to get it
Thanx
 

salem_eng1 said:
Hi All

I am working nowadays in system design of PLL frequency synthesizer for ZigBee.
From my search on the net and e-books I found some specs but not all I need so any one has this specs or have a simple tutorial for the ZigBee standard and its Physical layer please upload it


The specs I have :
-fc=2405+5*(k-11) MHz , k=11,12,........,26
-frequency range: 2.4GHz<fc<2.4835GHz
-Frequency tolerance: 40ppm
-Channel spacing=5MHz
-Channel B.W=2MHz
-Settling time=190usec
-Phase noise : -80dBc/Hz @ 3.5Mhz , -75 dBc/Hz @ 5Mhz , -105 dBc/Hz @ 10MHz

The specs I need
-Minimum SNR at the receiver input
-Minimum Rx power.
-Maximum Rx power
-spurs level at 5,10,15 MHz offset

My question is that I am not sure from the specs I have so any one can correct it to me if there is any mistake or tell me how to check it is right also I need the other specs I don't have can any one tell me how to get it
Thanx
Click to expand...

hi

i think you can refer some papers for references.
good luck
jeff
 

    S

    salem_eng1

    Points: 2
    Helpful Answer Positive Rating
Thanx jfyan

I tried to search some paper as you said but I found specs more than the minimum required
The problem is I am just a beginner on PLL design and I can't design the specs found in a paper.

I just want to Know the minimum required specs Like Phase noise. Not more than the minimum

Please any one can help he will be grateful

Thanx
regards
Salem
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top