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What is the difference between analog phase shifter and digital phase shifter?
Wiki User
∙ 12y ago
An analog phase shifter provides a phase shift with a varying control voltage.
A digital phase shifter switches among phase states to provide discrete phase shifts. the more bits there are, the smaller the quantization/digitization error. For example,
1 bit phase shifter provides a phase shift of 0 and 180°, or 0 and 90°.
2 bit phase shifter provides a phase shift of 0, 90°, 180° and 270°.
3 bit phase shifter provides a phase shift of 0, 45°, 90°, 135°, 180°, 225°, 270°, 315°, 360°.
Wiki User
∙ 12y ago
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