3results about How to "Increase the withstand power" patented technology

The present application relates to a kind of full metal circular polarization frequency scanning antennas based on artificial surface plasmons, belong to frequency scanning antenna technical field.The antenna includes three parts of feed waveguide, radiation structure and metal base plate.The radiation structure includes metal ground plate, artificial surface plasmons transmission structure by multiple staggered stepped rectangular wave column body equidistant arrangement, the transmission structure side for realizing TE 10 to TM mode conversion Graduated height transmission structure, and multiple metal cylindrical radiation units periodically arranged.The radiation unit is electromagnetically coupled with transmission structure, excitation space high harmonic wave realizes leaky wave radiation, and generates the orthogonal electric field of phase difference 90 ° and realizes circular polarization.The present application adopts full metal structure, easy to process, resistant to high power, robustness is strong;In 190 GHz-205 GHz frequency band, beam scanning range is-20 ° to +2 °, and main radiation direction axis ratio is less than 3 dB.The present application solves the technical problems that existing leaky wave antenna is difficult to realize circular polarization radiation in terahertz frequency band, structure is complex.

The application discloses a PIN diode with an arc-shaped gradually-changing tube core, which comprises a substrate and a diode packaging structure, wherein the diode packaging structure is arranged on the substrate; the diode packaging structure comprises a first anode metal plate, an anode air bridge, a tube core, a cathode metal plate and an N-type high-doped layer; the first anode metal plate is connected with a second anode metal through the anode air bridge; the tube core comprises the second anode metal, a P-type high-doped layer and a semiconductor I layer; the second anode metal plate is in contact with the P-type high-doped layer to form an anode ohmic contact electrode; the cathode metal plate is in contact with the N-type high-doped layer to form a cathode ohmic contact electrode; the P-type high-doped layer is arranged directly below the second anode metal plate; and the semiconductor I layer is arranged between the P-type high-doped layer and the N-type high-doped layer. The application can eliminate the electric field concentration effect and improve the maximum withstand power of the diode by adjusting the gradually-changing shape.

This utility model discloses a phased array radar phase shifter data acquisition and testing system, belonging to the field of microwave and radio frequency technology. The system includes a vector network analyzer, a main control subsystem, a temperature monitoring subsystem, and a waveguide array testing subsystem. This utility model employs a layered, staggered method with equal-length straight and curved waveguides to extract microwave signals, resulting in a compact structure and small overall size. It can be used in conjunction with the device under test (DUT) for environmental adaptability testing and temperature and humidity screening testing, overcoming the problems of large size and high cost of matrix switch box testing equipment. The design of the radio frequency coaxial switch group overcomes the problem of generally low power tolerance in electronic switches. The system has a built-in temperature sensor with temperature protection settings; exceeding the protection temperature triggers a temperature alarm and subsequently power-off protection, ensuring system safety. It can be widely applied to various environmental testing scenarios for radar antenna phase shifters, T / R components, power dividers, etc., and general-purpose modules can be replaced according to the actual testing scenario.