Patent ID: 6054906
Filing Date: 2000-04-25
Classification: H03H,H04B

Abstract:
An RF power divider for use in a UHF-band high-power amplifier of a radio transmitter implemented in an integer equivalent circuit wherein quarter wavelength lines are formed by lumped elements to provide a smaller RF power divider, said lumped elements including a first and second capacitor, said RF power divider comprising:a single input port;first and second output ports;a first microstrip line coupled to the input port;first and second coils coupled in parallel to an output side of the first microstrip line;a second microstrip line coupled between an output side of the first coil and the first output port;a third microstrip line coupled between an output side of the second coil and the second output port;said first capacitor coupled between a ground and a contact point of the first microstrip line and the first and second coils;a resistor coupled between a contact point of the first coil and the second microstrip line, and a contact point of the second coil and the third microstrip line;said second capacitor coupled in parallel with the resistor and being in parallel with only the resistor and said first coil and first and second capacitors, and said second coil and first and second capacitors respectively forming lumped element equivalents of a quarter wavelength line.