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LF: 100 kHz I/Q

from [pws] [Permanent Link][Original]
To: [email protected]
Subject: LF: 100 kHz I/Q
From: pws <[email protected]>
Date: Fri, 03 Aug 2012 18:30:32 +0200
Reply-to: [email protected]
Sender: [email protected]
User-agent: Mozilla/5.0 (X11; Linux i686; rv:13.0) Gecko/20120601 Thunderbird/13.0 

Hi,

I found some 10 MHz double-OCXOs in the junk-box and
I need two 100 kHz LO-signals at 90deg. of phase shift.

The idea is using 74HC390 for dividing down to 400 kHz
(25:1) feeding a phase shifting network consisting of
two flip-flops (4:1), commonly found at SDRs.

Q: Does that work or could I run into trouble due to the
non-symmetrical output train from the 25:1 dividers?

May be a stupid question but it's ~40 years ago when I
was busy doing nasty things with flip-flops [^_^]

Peter, df3lp
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