| Popis: |
This paper introduces a new U.S. ultra-wideband(UWB: 3.1～10.6 GHz) 1:2 power divider based on a single section Wilkinson type configuration. The divider provides very flat in-band power splitting, high isolation, low insertion loss, sharp roll-off bandpass filtering, and DC blocking characteristics. The circuit consists of a λ/4 Y resonator, three capacitively coupled λ/2 short-circuited lines, and a resistor between the two output ports. The circuit structure was simulated with ADS and HFSS, and realized with low-temperature co-fired ceramic(LTCC) green tape, which has a dielectric constant of 7.8. |S 11 | better than 10 ㏈, |S 21 | and |S 31 | less than 3.2 ㏈, with both |S 22 | and |S 32 | measured as better than 12 ㏈ for the whole UWB band. Measurement results agree closely with HFSS simulation results. The power divider has a compact size of 4×9×0.6 ㎣. |
