Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic 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

[need help]about qpsk

Status
Not open for further replies.

zhl_gs1980

Member level 1
Joined
Feb 3, 2005
Messages
40
Helped
5
Reputation
10
Reaction score
5
Trophy points
1,288
Activity points
194
I made a QPSK modulator with max2510,I AND Q derive from ad9763, I AND Q 10MHz; LO 350 MHz .
Problem:spectrum 340MHz AND 360MHz are equal ,and 350 MHz 20dB below than 340MHz and 360MHz. but theorily 340 and 350mhz are about 40dB below than 360mhz. addachment is my SCH.


THs!!
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top