Design of a dual band power divider using meander line technique frequency 4928 MHz and 9856 MHz for radar application

The dual band devices it's a some technique made a optimal at a desire frequency with specific technique such as dual impedance and step impedance. This paper presents design of dual band Wilkinson power divider using dual impedance transmission line with stubs. The design is modified using meander pattern to reduce the size of the device. The proposed design was simulated using software ADS 2011.10 and using a substrate Roger Duroid 5880. In this WPD, two branches of impedance transformer and the output ports are shunted with a resistor (R). Simulation results of this WPD design are shown by the graphs of insertion loss (S
₂₁
and S
₃₁
), return loss both of input and output (S
₁₁
, S
₂₂
and S
₃₃
) and also isolation between the output ports (S
₃₂
). The simulation shows the insertion loss (S
₁₂
and S
₁₃
) - 3.17 dB at frequency of 4928 MHz and -4.1 dB at frequency of 9856 MHz. The isolation (S
₃₂
) is less than -21 dB at frequency of 4928 MHz and less than -27 dB at frequency of 9856 MHz. The input return loss (S
₁₁
) is less than -16 dB at frequency of 4928 MHz and less than -15 dB at frequency of 9856 MHz. The output return loss (S
₂₂
and S
₃₃
) are identical where less than -17 dB at frequency of 4928 MHz and -22 dB at frequency of 9856 MHz. A satisfactory agreement based on the simulation results, this dual band WPD have a good and acceptable insertion loss and isolation, and also produce a better return loss of input and output ports for operating on the both frequencies of 4928 MHz and 9856 MHz.