31results about How to "Achieving UWB" patented technology

The application discloses a radio frequency wideband frequency agility frequency source. The radio frequency wideband frequency agility frequency source comprises a frequency reference module, a baseband module, a local oscillator module and a frequency conversion module; the frequency reference module is used to output a 1000MHz reference signal to the baseband module and output a 1000MHz excitation signal to the local oscillator module; the baseband module is used to output a 200MHz to 400MHz baseband signal to the frequency conversion module; the local oscillator module is used to output six point frequency signals to the frequency conversion module, wherein the output frequency range of the point frequency signals is 10GHz to 20GHz and the frequency interval is 2GHz; and the frequencyconversion module is used to extend the frequency of the 200MHz to 400MHz baseband signal, so that the output signal frequency covers 1.25-20GHz. Compared with the traditional frequency source, the scheme disclosed by the invention has better indexes and a smaller structure size.

The invention discloses an ultra-wideband microstrip antenna based on the rectangular stepped structural fractal. The ultra-wideband microstrip antenna includes a dielectric substrate, a metal ground plate, a radiation patch unit and an impedance matching microstrip feeder. The radiation patch unit and the impedance matching microstrip feeder are arranged on the front of the dielectric substrate. The metal ground plate is arranged on the back of the dielectric substrate. The radiation patch unit includes a first-order fractal structure, a tapered slot structure, a second-order fractal structure and a transform matching microstrip feeder. The first-order fractal structure includes a first rectangular radiation patch, a second rectangular radiation patch and a third rectangular radiation patch which are arranged in an inverted ladder shape. The central portion of the first-order fractal structure is provided with the tapered slot structure which is self-similar to the first-order fractal structure. The central portion of the tapered slot structure is provided with the second-order fractal structure. By adopting a new fractal structure, the invention broadens the frequency band of the antenna, reduces the size of the antenna and enables the antenna to meet ultra-wideband characteristics in 3GHz-12.9GHz. Meanwhile, the antenna is simple in structure, low in profile, and easy to install and integrate.

The invention discloses a UWB (ultra wide band) high-power miniature power divider, and the power divider comprises a multi-stage air stripline network, a metal separator plate, and a multi-stage microstrip network. The multi-stage air stripline network comprises a first impedance matching conversion part. The multi-stage microstrip network comprises a dielectric plate, and the lower end face of the dielectric plate is provided with a microstrip layer. The microstrip layer is provided with two second impedance matching conversion parts, and the two second impedance matching conversion parts are distributed at two sides of the first impedance matching conversion part, and are connected with the first impedance matching conversion part through a vertical transition. The vertical transition comprises a rectangular metal plate and a metal cylinder. The metal plate is bent to form a right angle, and the vertical transition passes through the metal separator plate and the dielectric plate, and is connected with the first and second impedance matching conversion parts. The power divider is advantageous in that the vertical transition enables the multi-stage air stripline network and the multi-stage microstrip network to be connected for combined use, so as to meet the UWB, high-power and miniature requirements of the power divider.

The invention discloses an ultra-wideband single-layer slot array antenna based on a slot-gap waveguide, and relates to the technical field of millimeter-wave ultra-wideband antennas. The array antenna includes a metal base plate, the upper surface of the metal base plate is formed with a slot gap waveguide and a ridge gap waveguide, and the upper surface of the metal base plate other than the slot gap waveguide and the ridge gap waveguide is formed with several periodic A metal pin, the upper surface of the metal pin is covered with an upper metal plate, and several groups of U-shaped grooves are formed on the lower surface of the upper metal plate, and the size of the metal column corresponding to the U-shaped groove is smaller than that of the U-shaped The size of the metal pin on the outside of the slot. The array antenna has the advantages of ultra-wideband, simple structure, compact array unit, better loss performance than traditional microstrip devices, and the like.