ULTRABROADBAND POWER AMPLIFIER USING 16-WAY SPATIAL COMBINING FINLINE ARRAY

作者：Hosseini S Esmail; Banai Ali^*

来源：Microwave and Optical Technology Letters, 2013, 55(2): 454-460.

DOI：10.1002/mop.27321

• ultrabroadband power amplifier
• spatial power divider/combiner
• antipodal finline
• spectral-domain method
• combining efficiency

An ultrabroadband power amplifier using 16-way spatial power divider/combiner that using a quasi-TEM-guided wave structure is designed. An oversized coaxial waveguide was used as the host of the dividing/combining circuits that incorporates an antipodal finline array. Galerkin%26apos;s technique in the spectral domain was used to analyze the antipodal finline. The oversized TEM-guided wave structure and antipodal transitions were designed using the theory of small reflection and near optimum design. A high power amplifier using 16 monolithic-microwave integrated-circuit power amplifiers is built. The measured results show 160% bandwidth impedance match covering the entire 2-18 GHz with maximum output power of 39 dBm CW (Continous Wave) and corresponding gain greater than 11 dB.

• 出版日期2013-2