نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسنده English
In this article, a two-port adder with a coaxial coupler and stub for removing the second harmonic with high power capacity is investigated. This design is based on a 2 to 1 coaxial adder and a coaxial coupler and a stub in the two arms of the adder. 7.16 and 1.58 connectors have been used in the inputs and outputs of this collector, respectively, due to the ability to transfer high power. The dimensions of this collector, along with the coaxial coupler and stubs, are 300 mm*192 mm*270 mm. A full-wave collector prototype has been evaluated. It is shown that the proposed high power combiner has better than 20dB return loss, less than 0.1dB amplitude imbalance in the 750MHz to 950MHz band. The proposed structure can reduce the second harmonic by -50dB. Since this collector is placed at the output of a high power transmitter, a coupler is used in its output arm to test the amplifier and to know its output power. This coaxial coupler has 34dB coupling and 30dB directivity. The proposed structure can actually perform the work of three parts (collector, filter and coupler) in radar transmitters and is suitable for combining power at the kilowatt level.
کلیدواژهها English
