6results about How to "Small VSWR" patented technology

The application relates to the technical field of radio frequency microwave devices, in particular to a W-waveband wide-frequency RF MEMS multi-blade multi-pole switch which comprises a silicon substrate, a plurality of input / output ports and a MEMS cantilever beam switch unit, the MEMS cantilever beam switch unit is provided with a driving electrode, and the communication and disconnection of the radio frequency signal path between the corresponding input port and the output port can be controlled by applying voltage to the driving electrode. The application realizes the on-off of the radio frequency signal path by electrostatic driving control of the deformation of the cantilever beam, and the driving mode has the advantages of low power consumption, high speed and easy integration. Compared with the common single-blade structure, the application can realize more complex signal routing in a compact unit, improves the system integration and functional flexibility, realizes interference-free crossing by using the slot structure through the horizontal swing type structure and the vertical lifting type structure, significantly reduces the high-frequency parasitic effect, and ensures the transmission quality of the millimeter wave signal in the W waveband.

This invention discloses an X-band direction-finding antenna and antenna device. The antenna includes an array layer, a cavity layer, and a network layer stacked sequentially from front to back. An antenna array is disposed on the array layer, and an array port is disposed on the antenna array. The array port is connected to the network layer and an output terminal disposed on the antenna through the cavity layer. The antenna device includes an antenna and an antenna support, with the antenna disposed on the antenna support. This X-band direction-finding antenna has a high degree of integration, small size, and light weight, achieving miniaturization. Simultaneously, it exhibits a low standing wave ratio and high element radiation efficiency in the X-band.

The invention relates to the technical field of rectangular waveguide slot antennas, and particularly discloses an I-shaped slot radiation antenna based on electromagnetic metamaterial design. Comprising a rectangular waveguide with a cavity, electromagnetic metamaterial structures which are arranged in the cavity and are axially and symmetrically arranged along the length direction of the rectangular waveguide, and an I-shaped gap which is arranged on the upper surface of the rectangular waveguide and is communicated with the cavity; the thicknesses of the two groups of electromagnetic metamaterial structures are axially increased along the length direction of the rectangular waveguide; and the I-shaped slot is arranged on one side of the metal short circuit surface close to the rectangular waveguide. One-way transmission is realized by introducing the electromagnetic metamaterial, the working bandwidth, the radiation efficiency and the gain of the rectangular waveguide slot antenna are improved by combining the I-shaped slot, and the standing-wave ratio is reduced.

The application discloses a kind of ultra-wideband low profile composite structure monopole antenna, including antenna radiator, metal short-circuit column, lumped loading module, metal floor and coaxial connector;The center position of the metal floor is provided with coaxial connector;Coaxial connector is connected with the bottom of antenna radiator;The antenna radiator is located above the center of metal floor and there is a certain spacing between the bottom and the metal floor, metal short-circuit column is set at equal intervals around the antenna radiator, and the bottom of metal short-circuit column is installed on the lumped loading module, and the lumped loading module is located on the metal floor.The application has the characteristics of ultra-wideband, low profile and omnidirectional radiation.

The utility model relates to the technical field of antennas, in particular to a 0.02 GHz-6GHz broadband signal emission combined antenna device, which comprises an emission installation panel and nine omnidirectional antennas installed on the emission installation panel, the arrangement sequence and the spacing of the antennas are as follows: an antenna 4, an antenna 6, an antenna 2, an antenna 1, an antenna 3, an antenna 5, an antenna 7, an antenna 9 and an antenna 8 in sequence from left to right, the spacing between the antenna 4 and the antenna 6 is 5cm, and the spacing between the antenna 4 and the antenna 6 is 5cm. The distance between the antenna 6 and the antenna 2 is 10cm, the distance between the antenna 2 and the antenna 1 is 15cm, the distance between the antenna 1 and the antenna 3 is 15cm, the distance between the antenna 3 and the antenna 5 is 10cm, the distance between the antenna 5 and the antenna 7 is 5cm, the distance between the antenna 7 and the antenna 9 is 5cm, the distance between the antenna 9 and the antenna 8 is 5cm, the distance between the antennas with similar frequencies is more than 15cm, near-field electromagnetic coupling is weakened, the positions of high-frequency and low-frequency antennas are staggered, and octave interference is avoided. After optimization, the standing-wave ratio of the antenna array is reduced, and the mutual coupling strength is weakened.

The invention provides a sectional type broadcast antenna array and a configuration design method thereof, and belongs to the technical field of aircraft profile design, and the method comprises the steps: arranging a first group of broadcast antenna arrays at the front section of an upper wall plate at the left and right sides of a dorsal fin at the tail section of a fuselage, and arranging a second group of broadcast antenna arrays at the rear section, the antenna size of the first group of broadcast antenna array is smaller than that of the second group of broadcast antenna array, the first group of broadcast antenna array comprises a plurality of first antennas, and the second group of broadcast antenna array comprises a plurality of second antennas; calculating a first minimum interval between two adjacent first antennas and a second minimum interval between two adjacent second antennas; arranging the two groups of antennas based on the minimum spacing of the two groups of antennas, and respectively determining the number of first antennas and the number of second antennas; and setting the specific positions of the two groups of broadcast antenna arrays based on the number of the antennas and the minimum spacing. According to the scheme, the signal coverage range and the transmission efficiency of the broadcast antenna array are improved, the signal interference is reduced, and the antenna gain is improved.