Phase Shifter Accuracy

1
Phase Shifter Accuracy

• Primary problem is directivity gain and
  direction of main beam.
• For N 16, quantizing to 3 levels ( 1, 0, -1)
  on each of I and Q channels preserves main beam
  direction and angle

2º
Angle error
-8º
3
Directivity error
2
1
2
Packaging
One CMOS Chip, 0.13um

• Need low-inductance connections off-chip to
  antenna array
• Path length is not critical array is adaptive
  and weights are relative.