Patent ID: 9281796
Filing Date: 2016-03-08
CPC Classification: H03H

Claim Text:
1. A passive, quadrature, RC polyphase filter (PPF) stage operative at Extremely High Frequencies (EHF), comprising: first, second, third, and fourth inputs, numbered contiguously; first, second, third, and fourth outputs corresponding to the first, second, third, and fourth inputs, respectfully, also numbered contiguously; a resistor interposed between each respective input and output; a first capacitor coupled directly between the first input and second output; a second capacitor coupled directly between the second input and fourth output; a third capacitor coupled directly between the third input and first output; a fourth capacitor coupled directly between the fourth input and third output; wherein a conductor connecting the second input to the second capacitor has a substantially equal length to another conductor connecting the third input to the third capacitor; and wherein respective conductors connecting the first, second, third, and fourth capacitors to the respective output thereof all have a substantially equal length.