cmosbjt
Full Member level 5
**broken link removed**
Hi, the above structure is the GPS downconverter IC CXA3355R from Sony:
**broken link removed**
They use a so call "Phase Shifter and Adder" to reject the image.
Is this Phase Shifter:
1. a polyphase filter
2. a 90deg phaseshift as the img below
3. or can be sth else?
Which is commonly used? 1, 2 or 3?
**broken link removed**
Thanks.
Hi, the above structure is the GPS downconverter IC CXA3355R from Sony:
**broken link removed**
They use a so call "Phase Shifter and Adder" to reject the image.
Is this Phase Shifter:
1. a polyphase filter
2. a 90deg phaseshift as the img below
3. or can be sth else?
Which is commonly used? 1, 2 or 3?
**broken link removed**
Thanks.