Patent ID: 9019041
Filing Date: 2015-04-28
Classification: H01P

Abstract:
1. A one input to four output power divider operable in a specified frequency band, and comprising: a first microstrip power divider having an input terminal and two output terminals; a first quarter-wavelength microstrip which has a length corresponding to a quarter of a wavelength of a signal at a specified frequency within the specified frequency band, which has an end coupled electrically to one of said output terminals of said first microstrip power divider, and which has a characteristic impedance substantially equal to an output impedance of said first microstrip power divider at said one of said output terminals coupled to said first quarter-wavelength microstrip; a second microstrip power divider which has an input terminal and two output terminals, said input terminal of said second microstrip power divider being coupled electrically to another end of said first quarter-wavelength microstrip, said second microstrip power divider having an input impedance at said input terminal thereof substantially equal to the characteristic impedance of said first quarter-wavelength microstrip; a second quarter-wavelength microstrip which has a length corresponding to a quarter of the wavelength of the signal at the specified frequency, which has an end coupled electrically to the other one of said output terminals of said first microstrip power divider, and which has a characteristic impedance substantially equal to an output impedance of said first microstrip power divider at said other one of said output terminals coupled to said second quarter-wavelength microstrip; and a third microstrip power divider which has an input terminal and two output terminals, said input terminal of said third microstrip power divider being coupled electrically to another end of said second quarter-wavelength microstrip, said third microstrip power divider having an input impedance at said input terminal thereof substantially equal to the characteristic impedance of said second quarter-wavelength microstrip; wherein each of said first microstrip power divider, said second microstrip power divider and said third microstrip power divider includes: wherein each of said first, third and fifth microstrips has a characteristic impedance of Z wherein the output impedance of said first microstrip power divider at said one of said output terminals is substantially equal to the characteristic impedance of said third microstrip, the output impedance of said first microstrip power divider at said other one of said output terminals is substantially equal to the characteristic impedance of said fifth microstrip, and the input impedance of each of said first, second and third microstrip power dividers at said respective input terminal is substantially equal to the characteristic impedance of said first microstrip.