Abstract: A high-frequency connector assembly includes a plurality of connection terminal groups, at least one first metal part, a plurality of second metal parts and an insulating shell. Each connection terminal group includes a male terminal and a female terminal, the male terminal is in contact with the female terminal to transmit signals, and the connection terminal groups are arranged along a first direction; the at least one first metal part extends along the first direction; the second metal parts are disposed between the plurality of connection terminal groups and extend along a second direction, in which each second metal part includes at least two metal pieces, and the at least two metal pieces are not connected to each other; the insulating shell carries the second metal parts, so that the at least one first metal part and the second metal parts are not in contact with each other.

Abstract: An electric device and a method for utilizing millimeter wave communication and radar sensing are provided. The electric device includes an antenna module, a millimeter wave communication module, a radar sensing module and a control module. The millimeter wave communication module and the radar sensing module share a sine-wave generator circuit, a frequency upconverter and a frequency downconverter, and respectively perform a millimeter wave communication operation and a radar sensing operation in accordance with an operation indicator signal transmitted by the control module. The method includes: using an operation indicator signal transmitted by a control module to control a millimeter wave communication module and a radar sensing module to perform a millimeter wave communication operation and a radar sensing operation in a predetermined work period.

Abstract: A 24 GHz band-pass filter includes a step impedance resonator, a first U-shape feeding portion, a second U-shape feeding portion, short-circuit stubs and open-circuit stubs. The step impedance resonator includes a first main portion, a second main portion, and a connection portion for connecting the main portions to each other. The first main portion and the second main portion are electrically connected to a first signal input/output port and a second signal input/output port. The first U-shape feeding portion is electrically connected between the first main portion and the first signal input/output port. The second U-shape feeding portion is electrically connected between the second main portion and the second signal input/output port. The short-circuit stubs are electrically connected to coupling segments of the step impedance resonator. The open-circuit stubs are electrically connected to the first U-shape feeding portion and the second U-shape feeding portion.

Abstract: A Balun filter is disposed on a circuit board, and includes a first wire, a second wire, a third wire and a ground plane. The first wire has one end for disposing a first feeding point. The second wire has one end for disposing a second feeding point. The third wire is configured for disposing a third feeding point and includes a first coupling section, a second coupling section, a first central section and a second central section. The third feeding point is located between the first central section and the second central section, and the first coupling section, the first central section, the second central section and the second coupling section are electrically connected in sequence. In a parallel direction of the first wire, the first feeding point and the second feeding point are located in two opposite directions, respectively, relative to the third feeding point.

Abstract: A flexible coplanar waveguide low profile high speed transmission circuit and a fabrication method of the transmission line structure are provided. The flexible coplanar waveguide low profile high speed transmission circuit includes a first flexible substrate, a second flexible substrate, a circuit layer, a first electromagnetic interference (EMI) shielding film and a second electromagnetic interference shielding film. In the fabrication method, the circuit layer is disposed between the first flexible substrate and the second flexible substrate and laminated. Then, electromagnetic interference shielding films are adhered to the flexible substrates. The flexible coplanar waveguide low profile transmission circuit satisfies following equation: tan ( DT / TS DK ) ? 1 , where DT is the distance between a grounded line and a signal transmission circuit, TS is the thickness of the flexible substrate, and DK is the dielectric constant of the flexile substrate.

Abstract: A wireless communication device includes an antenna module and a flexible substrate. The antenna module includes an antenna structure and a control chip. The control chip is configured to use an antenna structure to perform wireless communication. The flexible substrate is used to carry the antenna module and includes two substrate regions. The antenna structure includes a first antenna radiation plate and a second antenna radiation plate. An open slot is extended from an edge of the first antenna radiation plate to a center of the first antenna radiation plate. The second antenna radiation plate is disposed under the first antenna radiation plate to overlap the first antenna radiation plate. There is a distance between the first antenna radiation plate and the second antenna radiation plate, thus the second antenna radiation plate is coupled to the first antenna radiation plate.

Abstract: An antenna structure includes an upper patch antenna, a lower patch antenna, a grounding layer, a transmission line layer, and a first feeding line and a second feeding line passing through the grounding layer. Each of the first feeding line and the second feeding line includes a first portion, a second portion and a third portion. The first portion is disposed between the lower patch antenna and the grounding layer and is perpendicular to the grounding layer. The second portion is disposed between the grounding layer and the transmission line layer and is perpendicular to the grounding layer. The third portion is disposed within the grounding layer and is parallel to the grounding layer. The third portion is coupled between the first portion and the second portion.

Abstract: An antenna module and a portable electric device are provided. The antenna module includes a flexible substrate, a first antenna circuit and a second antenna circuit. Each of an L-shaped bent portion and a U-shaped bent portion of the flexible substrate has a first end and a second end opposite to each other. The first end of the L-shaped bent portion is connected to a first main body of the flexible substrate. The first end of the U-shaped bent portion is connected to the second end of the L-shaped bent portion. The second end of the U-shaped bent portion is connected to a second main body of the flexible substrate. The first antenna circuit and the second antenna circuit are respectively disposed on the first main body and the second main portion. The portable electric device includes a casing and the antenna module disposed at a corner.

Abstract: A high-frequency connector includes a plurality of connection terminal groups, at least one first metal part, a plurality of second metal parts and an insulating shell. Each connection terminal group includes a male terminal and a female terminal, the male terminal is in contact with the female terminal to transmit signals, and the connection terminal groups are arranged along a first direction; the at least one first metal part extends along the first direction; the second metal parts are disposed between the plurality of connection terminal groups and extend along a second direction, in which each second metal part includes at least two metal pieces, and the at least two metal pieces are not connected to each other; the insulating shell carries the second metal parts, so that the at least one first metal part and the second metal parts are not in contact with each other.

Abstract: An electric device and a method for utilizing millimeter wave communication and radar sensing are provided. The electric device includes an antenna module, a millimeter wave communication module, a radar sensing module and a control module. The millimeter wave communication module and the radar sensing module share a sine-wave generator circuit, a frequency upconverter and a frequency downconverter, and respectively perform a millimeter wave communication operation and a radar sensing operation in accordance with an operation indicator signal transmitted by the control module. The method includes: using an operation indicator signal transmitted by a control module to control a millimeter wave communication module and a radar sensing module to perform a millimeter wave communication operation and a radar sensing operation in a predetermined work period.

Abstract: A Balun filter is disposed on a circuit board, and includes a first wire, a second wire, a third wire and a ground plane. The first wire has one end for disposing a first feeding point. The second wire has one end for disposing a second feeding point. The third wire is configured for disposing a third feeding point and includes a first coupling section, a second coupling section, a first central section and a second central section. The third feeding point is located between the first central section and the second central section, and the first coupling section, the first central section, the second central section and the second coupling section are electrically connected in sequence. In a parallel direction of the first wire, the first feeding point and the second feeding point are located in two opposite directions, respectively, relative to the third feeding point.

Abstract: A 24 GHz band-pass filter includes a step impedance resonator, a first U-shape feeding portion, a second U-shape feeding portion, short-circuit stubs and open-circuit stubs. The step impedance resonator includes a first main portion, a second main portion, and a connection portion for connecting the main portions to each other. The first main portion and the second main portion are electrically connected to a first signal input/output port and a second signal input/output port. The first U-shape feeding portion is electrically connected between the first main portion and the first signal input/output port. The second U-shape feeding portion is electrically connected between the second main portion and the second signal input/output port. The short-circuit stubs are electrically connected to coupling segments of the step impedance resonator. The open-circuit stubs are electrically connected to the first U-shape feeding portion and the second U-shape feeding portion.

Abstract: A facial recognition method for eliminating the effect of noise blur and environmental variations is provided, applicable to a data processing apparatus, to determine whether a current-face-image matches a reference-face-image or not. According to the method, Gaussian Noise blur Reduction or another noise blur reduction method is performed on the current-face-image and the reference-face-image. Furthermore, the current-face-image and the reference-face-image are respectively divided into a plurality of blocks, so as to derive feature-vector sets representing the current-face-image and the reference-face-image. Finally a dynamic threshold value is determined according to environmental variations to be compared with the difference of the feature-vector sets, so as to determine whether a current-face-image matches a reference-face-image.

Abstract: A facial recognition method for eliminating the effect of noise blur and environmental variations is provided, applicable to a data processing apparatus, to determine whether a current-face-image matches a reference-face-image or not. According to the method, Gaussian Noise blur Reduction or another noise blur reduction method is performed on the current-face-image and the reference-face-image. Furthermore, the current-face-image and the reference-face-image are respectively divided into a plurality of blocks, so as to derive feature-vector sets representing the current-face-image and the reference-face-image. Finally a dynamic threshold value is determined according to environmental variations to be compared with the difference of the feature-vector sets, so as to determine whether a current-face-image matches a reference-face-image.