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

Frequency offset error in receiver

Status
Not open for further replies.
B

bolton00

Newbie level 6
Joined
Nov 21, 2011
Messages
11
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,361
I have a radio transmitting at 903.5 MHz and a receiver with a PLL fixed at that frequency. When i observe the signal after the mixer I see a frequency offset of 3.75KHz. What parameters of the PLL should I optimize to remove this offset?
 

the crystal reference clock is a little off in frequency. You need to buy a crystal with more accurate frequency accuracy, less crystal aging, or possibly control the voltage droop to the crystal.
 
The frequency is only off by 4ppm. Unless you have bought a good TCXO for your frequency reference that is to be expected, as biff said.

Keith.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top