H. T. Jeong, Hyun Seok Lee, Sung Wook Kim, Ik-Soo Chang
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Design of push-pull amplifier using slot line balun with dielectric resonator
The design of high power push-pull amplifier and unique balun structure are presented. The balun consists of a dielectric resonator and slot line. In comparison with previous balun made up with cavity fixture by G.J. Laughlin (1976), the proposed one can be easily implemented due to its simple structure. The experimental result shows that push-pull amplifier has a gain of 13.7dB at the 2.1GHz W-CDMA band. With two carrier W-CDMA signal, the push-pull amplifier achieves an efficiency of 18.8% at the 41.5dBm average output power and ACLR test results of 36.7dBc at the 5MHz offset and 43.6dBc at the 10MHz offset.
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