摘要:
An array antenna and an electronic apparatus using the array antenna are provided. The array antenna includes a plurality of antenna units, a first connection line, and a second connection line. Each of the antenna units includes a rectangular radiation region, a first feeding line and a second feeding line. The first and second feeding lines are connected to two adjacent feeding corners of the rectangular radiation region. The first connection line and the second connection line are disposed at two sides of the antenna unit for connection with the other ends of the first feeding line and the second feeding line, respectively.
摘要:
An array antenna and an electronic apparatus using the array antenna are provided. The array antenna includes a plurality of antenna units, a first connection line, and a second connection line. Each of the antenna units includes a rectangular radiation region, a first feeding line and a second feeding line. The first and second feeding lines are connected to two adjacent feeding corners of the rectangular radiation region. The first connection line and the second connection line are disposed at two sides of the antenna unit for connection with the other ends of the first feeding line and the second feeding line, respectively.
摘要:
A planar antenna including a substrate, multiple antenna bodies and a metal layer is provided. The antenna bodies are disposed at a surface of the substrate, and the metal layer is disposed at another surface of the substrate. The metal layer has multiple slots which interlace with the antenna bodies. The antenna bodies are partially corresponding to the metal layer and used to cooperate with a communication system which can perform a multi-path transmission to send and receive electromagnetic signals for a multiple MIMO system simultaneously.
摘要:
A transceiver has a pulse position modulation (PPM) encoder, automatic gain control (AGC) circuit and timing recovery circuit. The PPM encoder illustratively has a frequency divider, slot selector, and mixer. The frequency divider divides the frequency of a clock signal to which the data of the non-return to zero (NRZ) signal are aligned to produce a half frequency clock signal. The slot selector selects pulses of the clock signal and the half frequency clock signal depending on logic values of the NRZ signal and a control signal to produce first and second slot selected signals. The mixer mixes the first and second slot selected signals to produce a PPM signal of the NRZ signal. The AGC circuit illustratively has a variable gain amplifier, a hysteresis comparator, an event detector, a timer, and a counter. The variable gain amplifier amplifies the PPM signal using a dynamically adjusted gain that depends on an inputted digital control value. The counter increments the inputted digital control value according to a clock signal outputted from the timer to increase the gain. The hysteresis comparator detects a signal level of the amplified PPM signal. The event detector causes the counter to decrease the inputted digital control value if the signal level is outside of a predetermined signal level range. The timing recovery circuit has a frequency track, a slot locked loop and a phase locked loop. The frequency track generates a coarse clock fx having a frequency that depends on a frequency of the PPM signal. The slot locked loop generates a resampling clock signal having a frequency that depends on the course clock fx and having slots locked to slots of the PPM signal. The phase locked loop locks a phase of the coarse clock fx to a phase of the PPM signal.
摘要:
When a communication device receives a request of connection, the communication device selects a destination address from multiple destination addresses according to data provided by a server. After a destination address is selected from the multiple destination addresses, the communication device connects a source address and the selected destination address.
摘要:
A sharing system for a hardware device cooperates with a first client host with a first operating system having a hardware driver to generate a management requirement to drive the hardware device. The sharing system according to the invention includes a first server host which may be coupled with a first client host and has a second operating system. The server host may be installed with a pseudo hardware driver to drive the hardware device according to the management requirement generated from the first server host.
摘要:
A charging device capable of connecting to Internet includes a charging unit for charging the mobile phone, a wireless communication unit for performing wireless communication through the mobile phone, so as to access a wireless network, and a local area network routing unit coupled to the wireless communication unit for transmitting data packets of the network to a local area network according a network interface protocol when the wireless network unit access the network through the mobile phone.
摘要:
A mouse for receiving in the portable computer is provided. The mouse includes a main body and a button portion. The body has a first side and a second side. The first side can be installed in a plugging slot of the portable computer. The button portion is electrically connected to the main body.