90 degrees phase difference cirquit needed for 1-30MHz

Thread starter neazoi
Start date Jun 21, 2011

Status: Not open for further replies.

Jun 24, 2011

G4BCH

Advanced Member level 1

zorro said:
Not really. The phase characteristic of the post-mixer filter does not matter. The output of that filter will be in quadrature with the PLL input regardless of the phase at the input of the filter. The accuracy of the quadrature depends only of the phase detector.
Regards

Z

I think we are talking about different things here, the scheme I proposed does not use a PLL to genreate the quadrature.
Atached ( I hope ) is simple block diagram, it says a lot more than a wordy description.
Peter

Attachments

Status: Not open for further replies.

Similar threads

S
Don't oscillator work when phase shift is 180 degrees or 0 degree?
- Started by skatefast08
- Apr 21, 2023
- Replies: 7
RF, Microwave, Antennas and Optics
S
Should the phase change of this CE amplifier be 180 degrees?
- Started by skatefast08
- Mar 29, 2023
- Replies: 4
RF, Microwave, Antennas and Optics
M
Phase Matching
- Started by mqasim.msee19rimms@seecs.
- Feb 16, 2024
- Replies: 0
RF, Microwave, Antennas and Optics
Y
logic of phase at resonance order for "phased array" design from unit cell meta materials
- Started by yefj
- Apr 26, 2024
- Replies: 2
RF, Microwave, Antennas and Optics
N
Difference between Main Antenna and Rx-diversity antenna
- Started by newbie_hs
- May 9, 2024
- Replies: 3
RF, Microwave, Antennas and Optics