Ka-band High Power Amplification Technology Research

With the progress of the times and technology, electronic technology has penetrated into every aspect of people’s lives. Whether it is a mobile phone communications, WIFI network, or military radar, navigation is by electronic technology as a basis, which as a front-end RF power amplifier transmitting equipment plays a vital role in the whole system.In the millimeter-wave band, its transmission equipment is a key part of an integral amplifier structure. Microwave integrated circuits now available in the market because of the output power is limited, so you want to use them under the premise of low power output of microwave integrated circuits, power combining technique is the best solution to improve the output power. Therefore, a simple and efficient synthesis of millimeter-wave power technology has become a top priority of the solid-state transmitter frequency technology research.In this paper, and designed a new power structure of the tray structure synthesis within the waveguide and a combination of T-type structure. This new power structure used in the synthesis of very fin internal dual waveguide transition line, through a combination of pallet structure and T-type structure, better use of the limited space inside the waveguide, compared with the traditional power structure capable of synthesizing the same size The waveguide is placed within the lumen more devices, in order to improve power amplification efficiency. Meanwhile, also addressing the signal splitters-the magnitude of synthesis, the phase coherency problems. Microstrip-waveguide transition structure through the cavity structure and the design of the dielectric substrate, for high gain generated since aroused to a good inhibition, and it has a very good heat dissipation. Finally, the use of Computer Simulation Technology dimensional field simulation software for the structure of the simulation results show that the spatial power distribution synthesis structure has broadband, low insertion loss and other characteristics, can be applied to high-frequency power distribution space combining amplifier design. The article also for problems encountered in the production process will make a summary and describes the physical properties of the detection method. Final in 34.4GHz200MHz band, the input power is 15dBm±3dBm, realized the study design 20W Ka-band high power amplifier components.