摘要:
A power measurement apparatus includes a radio frequency input terminal, a measurement module, an interface, a memory, and a control unit. The radio frequency input terminal is connected to a radio frequency device. The measurement module is connected to the radio frequency input terminal to convert the radio frequency signal into a voltage signal. The interface is connected to the measurement module, receiving and transmitting the voltage signal from the measurement module. The memory is connected to the interface to store a voltage-power table related to the radio frequency signal. The control unit is connected to the interface to query the voltage-power table in the memory via the interface, and obtain the power of the radio frequency device according to the voltage signal output from the measurement module.
摘要:
A planar antenna (20) includes a radiating body (21), a feeding portion (22), and a first metallic ground plane (24). The radiating body includes a first radiating portion (212) extending away from the feeding portion and a second radiating portion (214) extending away from the feeding portion next to the first radiating portion. The first radiating portion includes an open end (2122) disposed at an extending end of the first radiating portion to point toward the second radiating portion, and a connecting portion (2124). The second radiating portion includes a free end (2144) disposed at an extending end of the second radiating portion to point toward the first radiating portion, and an end (2146) connected to the connecting portion. A first gap (26) is formed between the open end and the free end. The open end, the first gap and the free end are aligned with one another.
摘要:
A comb-line wireless filter (5) includes an input end (505a), an output end (505b), a first transmission line (501b), a second and third transmission line (501a, 501c) each having a curved shape, and a first, second, and third capacitor (503b, 503a, 503c). The first transmission line has a first transmission line part and a second transmission line part. The second transmission line and the third transmission line are separately on the two sides of the first transmission line part of the first transmission line. The input end and the output end are separately connected to first ends of the second transmission line and the third transmission line. The capacitors are separately connected to first ends of the transmission lines. According to the curved shape of the second transmission line and the third transmission line, the size of the comb-line wireless filter is significantly reduced.
摘要:
A MIMO antenna (20) is disposed on a substrate (10) including a first surface (12) and a second surface (14). The MIMO antenna includes a pair of parallel first antennas (30) spaced apart from each other and a second antenna (40) spaced apart from the first antennas. The second antenna is disposed between the first antennas. Each of the first and second antennas is disposed on the first and second surface of the substrate and is a dipole antenna.
摘要:
Disclosed is a signal transceiving device (30) capable of being easily mounted on a substrate (10) and providing effective transceiving performance. At least one RF module (106) is disposed on the substrate. The signal transceiving device includes at least one antenna (32) for transmitting and receiving electromagnetic wave signals, a shielding apparatus (34) and a connecting member (36). The shielding apparatus includes a shield (346) for shielding electromagnetic interference signals generated by the at least one RF module, and a base (340) for supporting the shield. The connecting member (36) is connected to the at least one antenna and the base.
摘要:
A dual-band antenna includes a feed portion, a ground portion, a radiating portion and a fine-tuning portion. The feed portion is operable to feed electromagnetic signals. The radiating portion includes a first radiator, a second radiator and a connecting portion. The first radiator is elongated and has a first end electrically connected to the ground portion, and a second end of the first radiator is floating. The second radiator is U shaped, with two open ends floating. The connecting portion is connected to the first radiator, the second radiator and the feed portion. The feed portion feeds electromagnetic signal to the first radiator and the second radiator via the connecting portion. The fine-tuning portion is arranged around the second radiator, operable to control operating frequency bands of the second radiator.
摘要:
A comb-line wireless filter (5) includes an input end (505a), an output end (505b), a first transmission line (501b), a second and third transmission line (501a, 501c) each having a curved shape, and a first, second, and third capacitor (503b, 503a, 503c). The first transmission line has a first transmission line part and a second transmission line part. The second transmission line and the third transmission line are separately on the two sides of the first transmission line part of the first transmission line. The input end and the output end are separately connected to first ends of the second transmission line and the third transmission line. The capacitors are separately connected to first ends of the transmission lines. According to the curved shape of the second transmission line and the third transmission line, the size of the comb-line wireless filter is significantly reduced.
摘要:
A wireless communication device includes a transceiving module, an antenna module, and a switch module. The transceiving module includes a first transceiver and a second transceiver. The antenna module includes at least a first antenna for transmitting electromagnetic signals in a first frequency range. The switch module switches different connections between the antenna module and the transceiving module, and includes a first switch, a second switch, a third switch, a fourth switch, and a first duplexer.
摘要:
A mobile station communicates with an access point (AP). The mobile station includes a low noise amplifier (LNA) path, a power amplifier (PA) path, a switch to select the LNA path or the PA path, and a controller directing the switch. The controller estimates amplifying power of the LNA, transmitting power and a sensitivity threshold of the PA. The controller receives a current received signal strength indication (RSSI) value of the AP. The controller determines whether amplifying power of the LNA path exceeds the PA sensitivity threshold. The controller transmits a selection signal directing the switch to select the LNA path if the amplifying power of the LNA path exceeds the sensitivity threshold of the PA.
摘要:
A radio frequency (RF)-based communication terminal includes a first switching chip, a second switching chip, a comparison module, a low noise amplifier (LNA), a first filter, a power amplifier (PA), a second filter, and a control module. The comparison module compares the power of a radio signal Rx received from a base station with a pre-stored signal and to output a control signal according to the comparison result. The control module controls conductive modes of the first and the second switching chips according to the control signal. In the first conductive mode, a radio signal Tx is sent out from the PA and the second filter. In the second conductive mode, the radio signal Tx is exchanged to send out from the LNA and first filter.