Apple inc. (20240429898). Phase-Invariant Signal Attenuator
Contents
Phase-Invariant Signal Attenuator
Organization Name
Inventor(s)
Milad Darvishi of San Diego CA (US)
Seyedmohammadreza Razavian of San Diego CA (US)
Phase-Invariant Signal Attenuator
This abstract first appeared for US patent application 20240429898 titled 'Phase-Invariant Signal Attenuator
Original Abstract Submitted
an electronic device may have wireless circuitry that includes a differential signal path having first and second signal lines. a pi attenuator may be disposed on the differential signal path. the pi attenuator may include a first series resistor on the first signal line, a second series resistor on the second signal line, and parallel resistors coupled between the first and second signal lines on opposing sides of the series resistors. a first capacitor may couple an input terminal of the first series resistor to an output terminal of the second series resistor and a second capacitor may couple an output terminal of the first series resistor to an input terminal of the second series resistor. the capacitors may serve to minimize phase variation as a function of attenuation level in attenuated signals output by the pi attenuator.
