: 09 February 2008 12:15
To: soft_radio@yahoogroups.com
Subject: Re: [soft_radio] Oscillator, why divide/4
- Original Message -
From: Dave Wade
Having read these I was wondering why these folks use the divide/4
approach when there are now DDS chips available very cheaply,
Now, but any
Dave,
Thanks for the info.
And thanks to Alberto for your explanation, I am constantly amazed by the
image rejection achieved by my Softrock.
73 Alan G4ZFQ
: soft_radio@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Miura Kazunori
Sent: Saturday, February 09, 2008 5:04 AM
To: soft_radio@yahoogroups.com
Subject: Re: [soft_radio] Oscillator, why divide/4
Hello
It is important for QSD/QSE to keep a phase difference of 90 degrees
precisely.I made
At 12:35 PM 2/9/2008, you wrote:
Miura,
I have a few questions. 1) how do you establish and maintain quadrature
offset in phase between the two DDS chips? 2) are you aware that the square
wave outputs have a much higher phase jitter than you would get by using a
compatitor on the sine or
Hello
S. Cash Olsen :
I have a few questions. 1) how do you establish and maintain quadrature
offset in phase between the two DDS chips?
using same clock into two DDS chip and make 90 degrees shift by command.
2) are you aware that the square
wave outputs have a much higher phase
