neazoi
Advanced Member level 6
Hello,
I am building this system **broken link removed**
The wideband 7-12GHz 90 hybrid should have accurate 90 degrees phase split, but the Narda datasheet says it can be varied within +-10 or so degrees throughout bands. Now that is too much for a phasing modulator I think.
Since I am using it somehow narrow-band in the amateur band, in order to correct the phase, should I purchase a phase shifter? **broken link removed**
What I am thinking to implement is shown at the attachment.
The variable attenuator is used to compensate for the amplitude difference and the phase shift network is used to compensate for the shift difference. Dependent on the values, I may need to interchange their positions or connect them in the same channel.
The software I am using is able to correct any amplitude/phase errors in the audio I/Q signals
1. Will I be able to correct phase and amplitude errors with the attached schematic?
2. What about any imbalances at the combiner? Will I be able to correct them with the attached schematic?
I am building this system **broken link removed**
The wideband 7-12GHz 90 hybrid should have accurate 90 degrees phase split, but the Narda datasheet says it can be varied within +-10 or so degrees throughout bands. Now that is too much for a phasing modulator I think.
Since I am using it somehow narrow-band in the amateur band, in order to correct the phase, should I purchase a phase shifter? **broken link removed**
What I am thinking to implement is shown at the attachment.
The variable attenuator is used to compensate for the amplitude difference and the phase shift network is used to compensate for the shift difference. Dependent on the values, I may need to interchange their positions or connect them in the same channel.
The software I am using is able to correct any amplitude/phase errors in the audio I/Q signals
1. Will I be able to correct phase and amplitude errors with the attached schematic?
2. What about any imbalances at the combiner? Will I be able to correct them with the attached schematic?
Attachments
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