Abstract: A communication system includes a microprocessor, a WiFi device, a WiMAX device, common antennas, and switching devices. The common antennas are for receiving a WiFi signal and a WiMAX signal. Each of the switching devices has an input terminal coupled to the corresponding common antenna, a first output terminal coupled to the WiFi device and a second output terminal coupled to the WiMAX device. When the communication system is applied to a WiFi system, the microprocessor controls the switching devices to isolate the WiMAX signal and transmit the WiFi signal via the first output terminals to the WiFi device; when the communication system is applied to a WiMAX system, the microprocessor controls the switching devices to isolate the WiFi signal and transmit the WiMAX signal via the second output terminals to the WiMAX device.

Abstract: A switch circuitry corresponds with a plurality of antennae. The switch circuitry includes a first switch module, a second switch module, and a third switch module. In this case, the first switch module, the second switch module, and the third switch module have a plurality of control leads, a plurality of signal leads, and a plurality of antenna leads respectively. The third switch module further has a plurality of transmission leads. Each signal lead connects with corresponding one of the antenna leads. In addition, an access point including the switch circuitry is provided.

Abstract: The present invention discloses a method for RF output power control of a wireless communication device by switching the wireless communication device between different modes according to a state parameter corresponding to a received beacon. These modes include a normal power mode for outputting a normal RF output power and a reduced-power mode for outputting a reduced RF output power. The reduced RF output power is less than the normal RF output power.

Abstract: An antenna module includes a substrate with at least a first antenna on one side while at least a second antenna on the other side of the substrate so that both sides of the antenna module are able to radiate signals. Therefore, the effective angular coverage of the antenna module is enlarged and the performance of the embedded wireless network device is improved.

Abstract: The present invention discloses a portable communication device with slot-coupled antenna module the slot-coupled antenna module comprises: a dielectric substrate, radio module, ground plane, air substrate, and patch radiator. The radio module contains a feed line and stub that are coupled on the surface of the dielectric substrate and extending along the long side of the dielectric substrate in parallel. The ground plane with slot-coupled structure is coupled on the other surface of the dielectric substrate, the feed line and stub pass through the intersect portion of the coupled slots. The air gap is therefore formed between the ground plane and the patch radiator, and the patch radiator is substantially parallel with the ground plane and locating substantially on the position of the coupled slots.

Abstract: The dual mode positioning system comprises multiple wireless network devices, one of the multiple wireless network devices including a GPS receiver. DSS is coupled to the multiple wireless network devices and an operation mode switch is also coupled to the multiple wireless network devices including a GPS receiver. A satellite GPS receiver coupled to the operation mode switch. The satellite GPS receiver is operated in an indoor area confined by walls with wide FOV (field of view) glass window, the operation mode switch switching to GPS mode for the satellite GPS receiver receives signals from greater than 3 satellites. Moreover, the satellite GPS receiver is operated in an indoor area confined by concrete walls or walls with narrow FOV glass window, the operation mode switch switching to Joint GPS/WPS mode for the satellite GPS receiver cannot receive signals from greater than 3 satellites.

Abstract: The present invention provides an antenna array structure which includes multiple array elements, and the antenna array structure is using for the application of the WLAN (wireless local area network) or WMAN (wireless metro area network.) Furthermore, the array elements of the present invention are phased arrays or attenuated arrays, and when configuration with different type of the array element is used, the corresponding BFN (beam forming network) can also be implemented in various possibilities. With all the configuration of the present invention, the manufacturers can have a stable array structure for their applications.

Abstract: An innovative testing apparatus and method for a multi-paths simulating system is proposed. The testing apparatus comprises a shielded chamber to avoid the external electromagnetic interference and other unexpected transmission paths. The multi-paths simulating system is utilized by attenuators for simulating a communication effects in a MIMO channel propagation environment. A control unit can set of MIMO and SISO modes of TD, RD and DUT to determine attenuation difference and downlink, uplink throughputs difference of the TD, RD and DUT.

Abstract: An antenna structure is proposed in the present invention. It includes a radiative element having at least two ends. One end of the radiative element has a grounding element connected to a ground plane. Another end of the radiative element has a feed element connected to a transmission line. The feed element is disposed diagonally relative to the grounding element. In this way, the present invention increases the bandwidth of the antenna and improves its functionality. Therefore, the antenna of the present invention is more convenient when in use.

Abstract: An antenna device includes a first elliptic reflective surface, a first antenna and a second antenna. The first elliptic reflective surface has a first focus and a second focus. The first antenna is disposed on the first focus, and the second antenna is disposed on the second focus. The first antenna transmits a first signal and a second signal, and the second antenna receives the first signal and the second signal. The first signal is transmitted directly to the second antenna from the first antenna. The second signal is reflected by the first elliptic reflective surface and transmitted to the second antenna.

Abstract: A co-construction with an antenna function and an EMI shielding function is electrically connected with a printed circuit board (PCB). A radio frequency circuit having a high frequency element is disposed on the PCB. The co-construction includes a shield and a first antenna. The shield has a first hole. The first antenna has a first radiator, a first ground point and a first feeding point. The first ground point is electrically connected to the first radiator and shield respectively. The first feeding point extends from one side of the first radiator and passes through the shield via the first hole to electrically connect to the radio frequency circuit of the PCB.

Abstract: A radio frequency (RF) module cooperates with an antenna and a digital signal processing (DSP) module. The DSP module outputs a first digital signal to the RF module, and the antenna outputs a second RF signal to the RF module. The RF module comprises a digital analog hybrid signal processing unit and an analog signal processing unit. In this case, the digital analog hybrid signal processing unit converts the first digital signal into a first analog signal or converts a second analog signal into a second digital signal, and outputs the second digital signal to the DSP module. The analog signal processing unit generates a first RF signal in accordance with the first analog signal or generates the second analog signal in accordance with the second RF module, and outputs the first RF signal to the antenna or outputs the second analog signal to the digital analog hybrid signal processing unit.

Abstract: The present invention provides a MIMO antenna structure and design. A single dipole antenna stands at the center of a triangle which is formed by three PIFAs antennas, and the three PIFA antennas has equal squint angle relative to the neighbors, that is there is 120° sector angle between any two PIFA axes of three such that the dipole and the other PIFAs forms a tetrahedron. The MIMO antenna structure of the present invention is simpler in mechanics but high efficiency in performance.

Abstract: A network information access system control method is cooperated with a track, at least an access point (AP) and a server. In this case, the access point is connected to the track. Additionally, the access point has a driving unit and a rolling unit. First step of the method is measuring at least one monitoring signal parameter by the access point. Then, the access point is to transform the monitoring signal parameter into a loading status parameter. Then, the method is inputting a default parameter into the access point. After that, the access point is comparing the loading status with the default parameter and generating a loading status signal. Finally, the access point is transmitting the loading status signal to the server so as to the server can control the access point moved along the track.

Abstract: A network information access system includes a track, an access point, a sensor, a server, and a power supply. The access point generates at least one loading status signal and has a driving unit and a rolling unit. In this case, the rolling unit is connected to the driving unit and the track. The sensor is located adjacent to the track to sense a position of the access point on the track. The server controls the access point moved along the track in accordance with the loading status signal. The power supply provides at least one power source into the access point, the sensor, and the server.

Abstract: A channel emulating device includes a first choosing module, a first signal integrating module, a first parameter adjusting module, a second choosing module, a second signal integrating module, a second parameter adjusting module and a third choosing module. The first signal integrating module generates at least one first integrated signal in accordance with a first input signal and at least one second input signal. The first and the second parameter adjusting modules respectively generate at least one first parameter signal and at least one second parameter signal. The second signal integrating module generates a plurality of second integrated signals in accordance with the first parameter signal and the second parameter signal. One of the second integrated signals acts as a first output signal.

Abstract: A hybrid wireless network system is disclosed. The hybrid wireless network system includes an antenna array, an analog subsystem, and a digital subsystem. The antenna array at least includes two antenna elements. In the case of using multiple antenna elements to extend link range and coverage, a coarse-fine method is included for antenna elements selection. The analog subsystem calculates a difference signal and a sum signal based on the two RF signals. The analog subsystem includes step leveling devices. The digital subsystem estimates a direction-of-arrival (DOA) based on the sum signal and the difference signal. The step-leveling devices receive weights from the digital subsystem, in form of a feedback control, to apply the weights on the two RF signals respectively. The digital subsystem repetitively calculates new weights to update a beam pattern formed by the two RF signals until the DOA approaches null.

Abstract: A method of channel allocation for respective radios is disclosed. The method begins by scanning within sectors of a phased array for retrieval of BSSIDs belonging to each beam of a particular channel in the sectors. Then, corresponding characterizing information is recorded for every BSSID located. Next, an initial channel allocation for the respective radios is formed. The initial channel allocation is compared with a plurality of predetermined channel allocation modes that include a first mode of Point-to-Point (PtP) linkage, a second mode of MultiPoint-to-Point (MPtP) linkage, a third mode of Point-to-MultiPoint (PtMP) linkage, and a fourth mode of MultiPoint-To-MultiPoint (MPtMP) linkage, and a mode out of the predetermined channel allocation modes is selected that best characterizes the initial channel allocation. The radios are configured based on the channel allocation and unbalanced loading is reduced by adding/subtracting a non-overlapped frequency channel of a radio to an unbalanced beam.

Abstract: The present invention provides a system and method for multi-path simulation that employs a shielded anechoic chamber to avoid external electromagnetic interference and other uncontrollable transmission paths generated in testing, and divides and adjusts a signal into multiple simulation signals to simulate the attenuations and delays generated in multi-path transmission of the signals. The shielded anechoic chamber includes a turntable, controlled by a control unit, for carrying a wireless communication device to be tested and for changing the reception azimuth of the device, thereby measuring the electric wave transceiving of the device.

Abstract: A network apparatus for self-testing network connectivity, a method thereof, and a method of analyzing frequency spectrum. The invention includes a link mode and a diagnostic mode. In the diagnostic mode, the MAC self-tests the network apparatus for network connectivity at least in signal quality, link quality, and quality of service by generating output signals traveling from the transmitter to the receiver, thus providing a simple, low power consuming, and reliable means for troubleshooting errors. The method of analyzing frequency spectrum eliminates the need of an expensive spectrum analyzer by utilizing the transmitter to output signals detectable by the receiver, then calculating power level differences between selected channel and its adjacent channels of the channels assigned to the receiver, and comparing the calculated power level differences with a plurality of pre-determined threshold values stored in a memory controlled by the MAC in order to meet standards and specifications.