5results about How to "Bandwidth" patented technology

The present application provides a kind of vibration power generation element, can substantially reduce the parasitic capacitance possibly generated in vibration power generation element, thereby can expand the frequency band that can be generated.A kind of vibration power generation element, characterized in that, with: fixed electrode, it has multiple comb-shaped electrodes;Movable electrode, it has multiple comb-shaped electrodes with the fixed electrode interlock;And elastic support part, it makes the movable electrode relative to the fixed electrode in the same plane on the predetermined direction relative movement, in the state of at least one of the fixed electrode and the movable electrode is electrified, the fixed electrode and the engagement length of the movable electrode and the deflection of the elastic support part are same, or the fixed electrode and the engagement length of the movable electrode is less than the deflection of the elastic support part.

The application discloses an S-band reflective phase shifter based on a cross-coupling line coupler, and belongs to the fields of wireless communication and digital signal processing. The reflective phase shifter is designed based on the cross-coupling line coupler, has the advantages of small size, low insertion loss and wide bandwidth compared with existing branch line couplers and Langer couplers, can replace the digital phase shifter used by a traditional phased array antenna, and solves the problems of high cost and high power consumption of the traditional phased array antenna. In addition, the reflective phase shifter can be integrated on a PCB, has the advantages of easy processing, low cost and small size, is easy to be integrated with a planar printed phased array antenna, and realizes the miniaturization and low cost of the phased array antenna.

The invention provides an electronic device. The electronic equipment comprises a front shell, a floor and an antenna assembly, the front shell comprises a frame part, the floor comprises a first edge and a second edge which are connected in a bending manner, the antenna assembly comprises a first antenna, and the first antenna comprises a first radiator and a first feed source; at least part of the first radiating body is arranged corresponding to the long side of the floor, the first radiating body comprises a first main radiating body and a first parasitic radiating body, the first main radiating body comprises a first end, a first feeding point and a first coupling end which are arranged in sequence, and the first parasitic radiating body comprises a second coupling end and a second end which are arranged in sequence; the first main radiating body and the first parasitic radiating body are positioned on the frame part; the first feed source is electrically connected to the first feed point, excites a first resonant mode to support a first sub-band of a first target band, and a second resonant mode to support a second sub-band of the first target band, the first resonant mode including a parasitic mode of the first parasitic radiator, and the second resonant mode including a zero-order mode of the floor.

The utility model belongs to the technical field of waveguides, and discloses a millimeter wave waveguide phase shifter, which comprises a waveguide body, a phase shifting metal sheet and a driving piece, the waveguide body is provided with a waveguide cavity extending in a first direction, the waveguide body is further provided with an installation cavity, the installation cavity is located on one side of the waveguide cavity, and the installation cavity is communicated with the waveguide cavity; two ends of the phase shift metal sheet are fixed in the mounting cavity, and the phase shift metal sheet has a deformation degree of freedom; and the driving part extends into the mounting cavity from the outside of the waveguide body to abut against the middle part of the phase-shifting metal sheet, the driving part acts along a second direction to drive the phase-shifting metal sheet to deform, and the second direction is perpendicular to the first direction. The antenna has the advantages of being simple in structure, small in size, convenient to process and wide in bandwidth.

The invention relates to the technical field of analog-to-digital converters, in particular to a sampling time error background calibration method for a time-interleaved analog-to-digital converter, which comprises a feed-forward compensation unit, a feedback compensation unit and a judgment unit, and is characterized in that during initialization, the feed-forward compensation unit is directly used for compensating sampling data of each channel; after each time of compensation, a judgment unit is adopted to judge whether the time mismatch error estimation value is larger than a set threshold value or not, if yes, a feed-forward compensation unit is adopted for next compensation, and otherwise, a feedback compensation unit is adopted for compensation. According to the method, when the cross-correlation function is calculated, the operation complexity is effectively reduced through the moving average filter, and the resource consumption during hardware implementation is equivalently reduced.