48results about How to "Broaden the working frequency band" patented technology

The invention discloses a comb-shaped slow-wave structure for a multi-band electron beam channel. The comb-shaped slow-wave structure for the multi-band electron beam channel comprises a rectangular wave guide wall of which the two ends are open; double rows of comb-shaped teeth are arranged on the inner walls of the upper end surface and the lower end surface of the rectangular wave guide wall in a staggered way; a plurality of insertion pieces are inserted into the rectangular wave guide wall at equal intervals; XYZ three-dimensional coordinates are established by taking the lower-left corner of the front end surface of the rectangular wave guide wall of which the two ends are open as an original point; the direction which is upwards vertical to the original point is the Z-axis; the direction which is leftwards horizontally is the Y-axis; the direction which is backwards horizontally is the X-axis; the teeth are at equal intervals and are parallel to the YZ plane; and the insertion pieces are parallel to the XZ plane. The comb-shaped slow-wave structure for the multi-band electron beam channel has a simple main structure, is easy to machine and is compatible with the modern micro electronic mechanical system (MEMS) technology; a transverse edge effect of the comb teeth can be ignored; the working frequency band is widened obviously; the beam-wave interaction efficiency is high; the working current is improved; the output power is increased; and the comb-shaped slow-wave structure is a novel slow-wave structure which extremely has application potential.

The invention provides an electric rotating machine based on super magnetostriction material. The electric rotating machine based on the super magnetostriction material comprises a precompression system, a stator and two rotors, wherein the precompression system comprises an output shaft, two springs and two spring fixing pieces, the two rotors are respectively connected with two ends of the stator, the output shaft penetrates the center of the stator and the centers of the rotors and is connected with the stator and the rotors in a sleeved mode, the springs are respectively sleeved on two ends of the output shaft and press the rotors tightly, and the spring fixing pieces are connected with the output shaft and press the springs tightly. The stator comprises two stator driving ends, a plurality of super magnetostriction units and a plurality of fixing pieces, wherein the super magnetostriction units are evenly arranged between the two stator driving ends, two ends of each super magnetostriction unit are respectively connected with the stator driving ends through the fixing pieces, and the stator drives the rotors to rotate by friction. The electric rotating machine based on the super magnetostriction material has the advantages of being high in accuracy, free of noise, fast in response, big in bearing capacity, big in working bandwidth, good in stability, high in reliability, free of fatigue, free of overheating failure and the like.

The disclosed reconfigurable quasi-Yagi fractal antenna includes two layer antenna components (1-1, 1-2) with same structure. Wherein, every layer antenna component comprises: two triangular metal plates (1, 2) with opposite vertex on base, two V-shaped passive paster oscillators (3, 4) on side of plates (1, 2), two straight-line passive paster oscillators (5, 6) symmetrical set on outboard of oscillators (3, 4), and five microwave switches (7~11). This invention has well electric property.

The invention discloses a multistable vibration energy capture structure. The multistable vibration energy capture structure comprises a support, wherein a clamping plate and a chute are respectivelyarranged at the upper portion and the bottom portion of the support; the clamping plate comprises a left clamping plate and a right clamping plate, a cantilever beam is fixed between the left clampingplate and the right clamping plate through bolts, and the end portion of the cantilever beam is connected with an end permanent magnet; and the side of the chute is provided with an elongated hole, the chute is internally provided with a magnet container, and bottom permanent magnets are installed in the magnet container. According to the invention, the plurality of bottom permanent magnets are installed in the chute, the multistable effect is achieved by introducing the nonlinear magnetic force, under the external excitation action, the cantilever beam is vibrated, and in the vibration process of the cantilever beam, based on the positive piezoelectric effect, the vibration energy is converted to electric energy. The multistable vibration energy capture structure is easy to achieve and regulate the multistable structure, and can effectively improve the energy capture efficiency and widen the working frequency band of the energy capture device.

The invention discloses a millimeter wave waveguide triplexer, which comprises a waveguide two-way equal power divider, two output ends of the waveguide two-way equal power divider are each connected with a waveguide two-way unequal power divider, one output ends of the two waveguide two-way unequal power dividers are combined into one output end to realize three-way waveguide output, and the three-way waveguide output end is connected with a cavity filter. The common work end of the waveguide two-way equal power divider and the two waveguide two-way unequal power dividers is provided with triangular protrusions. Metal diaphragms are arranged in the filter at intervals. The structure is simple, the isolation degree between multiplexer channels is improved, and the working bandwidth is increased.

A wireless communication device whose impedance can be matched with an arbitrary load impedance and that can be broadened in operating frequency band even when choosing an input impedance of an IC chip freely is not possible. The wireless communication device includes: a first conductor; a second conductor disposed substantially parallel to the first conductor; a hole formed in the second conductor; a capacitive coupling mechanism disposed adjacent to the hole; and a communication circuit which has at least one of a radio wave transmitting function and a radio wave receiving function. The communication circuit is connected through the capacitive coupling mechanism to two sites on the second conductor that are near borders between the second conductor and the hole.

The invention discloses a microwave power divider that bases on left-right hand combination transmission lines, which has a plurality of parallel left-right hand combination transmission units that include: right-hand material inductor LR connected with left-hand material capacitor CL in series, and parallel arranged with left-hand material inductor LL and right-hand material capacitor CR, and then connected with resistance R in series. The inventive microwave power divider has the advantages of be able to obtain high working frequency band, low insertion loss and equal power.

A planar orthomode transducer comprises a substrate integrated resonator, two substrate integrated waveguides connected to the substrate integrated resonator, a dual polarized metal waveguide and a printed circuit board where the substrate integrated resonator and the substrate integrated waveguides are provided, wherein the substrate integrated resonator further comprises a slot aperture in one of metallization layers, and the dual polarized metal waveguide is mounted on a surface of the printed circuit board in an area of the slot aperture of the substrate integrated resonator, wherein the substrate integrated resonator is a nonfundamental orthogonal mode resonator.This enables widening of frequency band of the planar orthomode transducer, reducing of insertion losses, rise of the polarization diversity and providing for a standard dual polarized output waveguide serving for connecting the device with an antenna of various types.