Abstract: An antenna structure includes a first substrate and a second substrate. The first substrate includes: a semiconductor chip configured to transmit or receive a first radio-frequency (RF) signal; a first ground layer configured to provide ground to the semiconductor chip; and a signal layer arranged on a side of the first substrate opposite to the semiconductor chip and configured to transmit the first RF signal. The second substrate has an antenna array formed of antenna cells, each of the antenna cells including: a first antenna layer configured to radiate second RF signals based on the first RF signal; a second ground layer configured to provide ground to the first antenna layer. The antenna device further includes a plurality of connectors electrically coupling the semiconductor chip to the antenna array.

Abstract: A wireless device includes a shell and an array antenna. The shell is configured with a low reflection structure. The array antenna disposed inside the shell, and the low reflection structure is located within a radiation range of the array antenna after beam scanning. The low reflection structure includes a plurality of slots arranged periodically.

Abstract: A wireless device includes a shell and an array antenna. The shell is configured with a low reflection structure. The array antenna disposed inside the shell, and the low reflection structure is located within a radiation range of the array antenna after beam scanning. The low reflection structure includes a plurality of slots arranged periodically.

Abstract: A switch-type phase shifter including a phase shifting unit is provided. The phase shifting unit includes two half circuits and a first switch connected to the half circuits and receiving a first control signal. Each half circuit includes a first variable capacitor, a second variable capacitor, a second switch and a variable inductor. The two ends of the first variable capacitor are coupled to the input and the control nodes of the half circuit respectively. The two ends of the second variable capacitor are coupled to the output and control nodes of the half circuit respectively. The first and second ends of the second switch are coupled to the output and input nodes respectively, and the third end thereof is coupled to the control node and receives a second control signal. The two ends of the variable inductor are coupled to the input and output nodes respectively.

Abstract: An antenna device and a method for calibrating an antenna device are provided, and the method includes: transmitting or receiving a signal by a first antenna unit and a second antenna unit; receiving the signal from the first antenna unit and the second antenna unit or transmitting the signal to the first antenna unit and the second antenna unit by a probe, wherein the first antenna unit and the second antenna unit are at a first distance from the probe respectively; and calibrating the first antenna unit and the second antenna unit according to a beat frequency of the signal corresponding to the first distance.

Abstract: The present invention relates to a transmitting device and a receiving device. The transmitting device includes a controller, at least a feeding antenna and a plurality of transceiving modules. The controller generates a plurality of set of module control signals; the feeding antenna radiately transmits at least an internal transmission signal. Each transceiving module includes a plurality of transceiving units, and each transceiving unit includes a radiation slice and a transceiving circuit. A lengthwise edge of the radiation slice has a first end and a second end, and the first end and the second end of the lengthwise edge are toward an inner lateral side and an outer lateral side, respectively. The transceiving module performs transmission operation or reflection operation according to the module control signals.

Abstract: The present invention relates to a transmitter and a receiver including multiple first and second transceiving units. Each of the first and the second transceiving units includes a first and a second radiation slices and a first and a second transceiving circuits disposed thereon. In the transmitter, the first and the second transceiving units receive first and second internal transmission signals at first and second polarization from the first and the second radiation slices, and transmit first and second external transmission signals generated from transformation through the first and the second radiation slices. In the receiver, the first and the second transceiving units receive first and second external reception signals at first and second polarization through the first and the second radiation slices, and transmit first and second internal reception signals at first and second polarization generated from transformation through the first and the second radiation slices.

Abstract: A comparator of a mono-pulse radar and a signal generation method thereof are provided. The comparator includes an antenna array, a TEM mode cavity power combiner and a switch device. The antenna array includes N antennas. The TEM mode cavity power combiner includes a combination port and M input port sets, and each of the input port sets has a positive input port and a negative input port, wherein N and M are integer greater than 1. The switch device is coupled between the antenna array and the TEM mode cavity power combiner and is used for transmitting the reflected signal received by the antenna array to the positive input port or the negative input port of one of the input port sets. The combination port of the TEM mode cavity power combiner generates an output signal according to the reflected signals received from the input port sets.

Abstract: A comparator of a mono-pulse radar and a signal generation method thereof are provided. The comparator includes an antenna array, a TEM mode cavity power combiner and a switch device. The antenna array includes N antennas. The TEM mode cavity power combiner includes a combination port and M input port sets, and each of the input port sets has a positive input port and a negative input port, wherein N and M are integer greater than 1. The switch device is coupled between the antenna array and the TEM mode cavity power combiner and is used for transmitting the reflected signal received by the antenna array to the positive input port or the negative input port of one of the input port sets. The combination port of the TEM mode cavity power combiner generates an output signal according to the reflected signals received from the input port sets.