Abstract:
A radio-frequency identification reader device including a plurality of antennas, a switch module, a coaxial cable, and a reader is provided. The switch module is electrically connected to the antennas. The coaxial cable is electrically connected to the switch module. The reader transmits a DC voltage, a control signal, and a radio-frequency signal to the switch module through the coaxial cable. The switch module generates an operation voltage by the DC voltage and the control signal. The switch module selects one of the antennas as a preset antenna by the control signal and drives the preset antenna by the radio-frequency signal.
Abstract:
An antenna structure includes a ferromagnetic patch, first metal conductive lines, second metal conductive lines, and metal connection elements. The ferromagnetic patch has a first surface and a second surface, and the second surface is opposite to the first surface. The first metal conductive lines are disposed on the first surface of the ferromagnetic patch. The second metal conductive lines are disposed on the second surface of the ferromagnetic patch. The metal connection elements penetrate the ferromagnetic patch. The metal connection elements further connect the first metal conductive lines to the second metal conductive lines, respectively.
Abstract:
The present disclosure is directed to a method of fabricating a substrate structure and a substrate structure fabricated by the same method. The method would include forming a first metal layer directly on a base, forming a first protective layer directly on the first metal layer, forming a second protective layer by using a compound comprising a thiol group directly on the first protective layer, patterning the second protective layer to form a pattern having an opening exposing the first protective layer, and forming a second metal layer within the opening of the second protective layer and directly on the first protective layer. The substrate structure would include a base, a first metal layer, a first protective layer, a second protective layer, and a second metal layer.
Abstract:
A test device for wireless electronic devices includes a metal casing, a RF-absorbing material, a measurement antenna, and an impedance adjustment module. The impedance adjustment module includes a dielectric layer, a microstrip line, and a slot line, wherein the slot line is electrically connected to the measurement antenna. The microstrip line and the slot line are disposed on two opposite sides of the dielectric layer and respectively include a first body and a second body, which are parallel to each other.
Abstract:
A control method of an antenna system includes the steps of configuring the antenna system to communicate with a plurality of stations, and configuring the antenna system to modify, at intervals of a predetermined time, a plurality of data acknowledgement (ACK) timeouts which correspond respectively to the stations, so that each of the data ACK timeouts substantially equals the round trip time of a packet for communication between the antenna system and the corresponding one of the stations.
Abstract:
An antenna structure includes a dipole antenna element, a meandering connection line, and a cascade radiation element. The dipole antenna element includes a feeding radiation element and a grounding radiation element. The feeding radiation element has at least one open slot. The cascade radiation element is coupled through the meandering connection line to the feeding radiation element.
Abstract:
The present invention provides a wireless electronic device including an adaptive antenna unit and a processing unit. The adaptive antenna unit directionally receives data from a first electronic device. The processing unit estimates a feedback time for when the wireless electronic device may receive data from the first electronic device when a predetermined condition is met, and enables the adaptive antenna unit to form a specific radiation field in a specific direction to receive data through the specific radiation field after the feedback time.
Abstract:
A method for manufacturing an antenna includes the steps of: providing a ferrite sheet; forming a via hole through the ferrite sheet, wherein the via hole is connected between a first surface and a second surface of the ferrite sheet; forming a nonconductive ink layer on the first surface and the second surface and in the via hole of the ferrite sheet; applying a displacement process to the nonconductive ink layer so as to form a first metal layer on the nonconductive ink layer; and applying a thickening process to the first metal layer so as to form a second metal layer on the first metal layer, wherein the first metal layer and the second metal layer both extend from the first surface through the via hole to the second surface of the ferrite sheet.
Abstract:
A method for assembling a cross-type transmission module is provided, which includes the following steps. First, a first circuit board and a second circuit board are provided, wherein the first circuit board includes a first antenna, and the second circuit board includes a first groove and a second antenna. Then, the first circuit board is inserted partially through the first groove along an insertion direction to connect the first circuit board to the second circuit board, wherein the first circuit board is on a first plane, the second circuit board is on a second plane, an included angle θ is formed between the insertion direction and the second plane, and the included angle is not zero. In this embodiment, the included angle is 90 degrees, and the second plane is perpendicular to the first plane.
Abstract:
An RFID reader includes an antenna, a conversion unit, a lookup table, a storage unit, an identification unit and a processing unit. The antenna receives a first signal from an RFID tag. The conversion unit converts the first signal to a first serial number. The lookup table records a plurality of specific serial numbers and a plurality of storage locations of a plurality of application programs, each of the specific serial numbers corresponds to the storage location of one of the application programs. The identification unit determines whether the first serial number is one of the specific numbers. The processing unit enables the RFID reader to provide a first function if the first serial number is one of the specific serial numbers. If not, the processing unit enables the RFID reader to provide a second function different from the first function.