Spatial Power Combining for
نویسندگان
چکیده
s the operating frequency of semiconductor solidstate devices increases into the millimeterwave region, the size of the devices and their power handling capability are reduced. In order to provide the advantages of a solid-state technology for moderate power levels at millimeter-wave frequencies, solid-state components must be combined. Spatial power combining provides enhanced RF efficiency by coupling the components to beams or modes in free space rather than via transmission lines in corporate combining structures. Recent in-
منابع مشابه
Spectral-spatial classification of hyperspectral images by combining hierarchical and marker-based Minimum Spanning Forest algorithms
Many researches have demonstrated that the spatial information can play an important role in the classification of hyperspectral imagery. This study proposes a modified spectral–spatial classification approach for improving the spectral–spatial classification of hyperspectral images. In the proposed method ten spatial/texture features, using mean, standard deviation, contrast, homogeneity, corr...
متن کاملBroadband radial waveguide power amplifier using a spatial power combining technique
A broadband radial waveguide power amplifier has been designed and fabricated using a spatial power dividing/combining technique. A simple electromagnetic model of this power-dividing/combining structure has been developed. Analysis based on equivalent circuits gives the design formula for perfect power-dividing/ combining circuits. The measured small-signal gain of the eight-device power ampli...
متن کاملExperimental and Electromagnetic Modeling of Waveguide-Based Spatial Power Combining Systems
HICKS, CHRIS WAYNE. Experimental and Electromagnetic Modeling of WaveguideBased Spatial Power Combining Systems. (Under the direction of Michael B. Steer.) Recent technological advancements and demands for high power sources at microwave and millimeter-wave frequencies have initiated extensive theoretical and experimental research in the area of quasi-optical and spatial power combining. The wo...
متن کاملEffective Design of a 3×4 Two Dimensional Distributed Amplifier Based on Gate Line Considerations
In this paper two dimensional wave propagation is used for power combining in drain nodes of a distributed amplifier (DA). The proposed two dimensional DA uses an electrical funnel to add the currents of drain nodes. The proposed structure is modified due to gate lines considerations. Total gain improvement is achieved by engineering the characteristic impedance of gate lines and also make appr...
متن کاملAn Efficient X-Band 16-Element Spatial Combiner of Switched Mode Power Amplifiers
This paper describes the design, implementation and characterization of a high efficiency 10-GHz amplifier antenna array for spatial power combining. An average drain efficiency of 70% at 162 W EIRP, or about 1.5 W of transmitted power, is measured for an array of 16 amplifiers consisting of four 4-element subarays. The power combining efficiency of the 16-element array is above 79%. The active...
متن کامل