Christopher Vassos1, Fraser Robb2, Shreyas Vasanawala3, John Pauly1, and Greig Scott1
1Electrical Engineering, Stanford University, Stanford, CA, United States, 2GE Healthcare, Aurora, OH, United States, 3Radiology, Stanford University, Stanford, CA, United States
1Electrical Engineering, Stanford University, Stanford, CA, United States, 2GE Healthcare, Aurora, OH, United States, 3Radiology, Stanford University, Stanford, CA, United States
A low power (5.7mW) Silicon Germanium Amplifier was constructed and its effects on image distortion shown via benchtop measurement. Image distortions from device non-linearity began at peak input powers of-25dBm. Reducing barriers to wireless receive arrays by reducing power consumption.
Amplifier Schematic. The BFP840 acts as the primary amplification device and the BFP183 acts as a cascode device.
Magnitude and Difference Images (x10). Peak input powers are (left to right): -40dBm, -30dBm, -25dBm, -20dBm. Difference images taken with regard to the reference dataset. A significant change in image contrast is evident upon reaching input powers of –25dBm, further evident at –20dBm. .
