zboost antenna

With the rapid development of mobile communication, it becomes more and more important to solve the problem of indoor cover and capacity, and the micro-cell base station becomes an important means to improve the indoor coverage effect and to increase the special area capacity. The importance of 3G indoor coverage Good network coverage, especially indoor coverage is the key to the success of 3G, NTT DoCoMo is a good example: NTT DoCoMo found that the user's indoor usage accounted for 70%, and o

together. 3. Remove the motherboard To remove the hard drive first, position the following image and pull the hard drive in the direction of the Red Arrow. Take off the screen as shown below (note that this figure I did not remove the high-pressure bar, not the correct method of disassembly): The white screws on the motherboard are all removed. A black screw in the lower right corner of the image is also to be torn down. The black screws near the USB port do not have to be torn down. See th

network has no signal Fault analysis There are several possible causes for this failure: (1) wireless network card distance from the wireless AP or wireless router is too far, more than the coverage of wireless networks, wireless signal to reach the wireless network card has been very weak, so that wireless clients can not be normal connection. (2) The wireless AP or wireless router does not power up or does not work properly, causing the wireless client to not connect at all. (3) When the

function in each data call connection let u, implement Fm-wan concurrency.**/public void Setnotchfilter (Boolean value) {fmreceiverjni.setnotchfilternative (sFd, v4l2_cid_private_tavarua_set_ Notch_filter, value); }/*** Enable/disable analog low power mode.* * This method enables/disables analog low power mode.**/Public Boolean Setanalogmode (Boolean value) { int re = Mcontrol.setaudiopath (sFd, value); Re = fmreceiverjni.setanalogmodenative (value); if (re = = 1)

(Boolean value) {fmreceiverjni.setnotchfilternative (sFd, v4l2_cid_private_tavarua_set_ Notch_filter, value); }/*** Enable/disable analog low power mode. * * This method enables/disables analog low power mode. **/Public Boolean Setanalogmode (Boolean value) { int re = Mcontrol.setaudiopath (sFd, value); Re = fmreceiverjni.setanalogmodenative (value); if (re = = 1) return true; return false; }/*** returns TRUE if the internal FM

-40dBm, RXP is set to-110, C2 offset is 50, and MS is reselected to the residential area when it passes through the road section. On-site inspection of the signal source, it was found that the signal was sent by the antenna next to the pole at the junction of Dahe Road and Tianhe Road. Photo of the antenna location: On this antenna, the frequency scanner scans f

Antenna placement Time limit:1000 ms Memory limit:65536 K Total submissions:5486 Accepted:2743 DescriptionThe global aerial research centre has been allotted the task of building the maximum th generation of mobile phone nets in Sweden. the most striking reason why they got the job, is their discovery of a new, highly noise resistant, antenna. It is called 4 dair, and c

elimination for users P maximizes energy for expected users P minimizes interference with other users L The array antenna and the assignment algorithm can provide additional gain of more than 15 dB, thus: P adds coverage to improve the signal receiving quality during buildings and high-speed motion P improves the signal reception quality and reduces the disconnection rate P increases system capacity P reduces the transmit power and prolongs the batte

the short term, it will become a standard feature of almost all 11ac products. MIMO was first introduced in the 802.11n standard. It was introduced to solve a previous problem, but it significantly increased the data transmission rate of Wi-Fi. The previous problem is called the "multi-path" problem, that is, when a wireless signal is transmitted, It will be reflected by the surrounding objects, this allows the signal to arrive at the receiver along multiple paths at different times and angles.

article refers to all standards based on 802.11, including all types of extensions 802.11b/a/g/e/I ). The network we imagine includes an access point (AP) with an antenna, used as a Wireless 802.11 Home Network, and also includes coaxial cable connections. The Network also includes two types of sites (STA): one is to connect to the network through a coaxial cable, and the other is to connect wirelessly. Remote antennas can also be attached to a node

?As we all know, IC chip packaging SMD and double-row in the sub-type. It is generally believed that the difference between SMD and double-row is mainlyIt is different in volume and welding method, which has little effect on system performance. actually otherwiseEvery trace on the PCB has an antenna effect. Each component on the PCB also has an antenna effect, the larger the conductive part of the component

For an RFID system, the concept of Frequency Band refers Frequency Range of tag signals sent, received, and read by the reader through an antenna . In terms of application concept, the operating frequency of the RF tag, that is, the operating frequency of the RFID system, directly determines all aspects of the system application. In an RFID system, the system works just like we usually listen to FM broadcasts. RF tags and Readers must be modulated to

GPS (global positioning system), Global Positioning System:GPS consists of three parts:1. Space:The spatial part of GPS is composed of 24 working satellites. It is located over 20 200km of the earth's surface, evenly distributed on 6 orbital planes (4 in each orbital plane), and the orbital angle is 55 °. In addition, three active backup satellites are running in orbit. The distribution of satellites allows more than four satellites to be observed anywhere and at any time in the world, and the n

. Synchronization Port:The output is a TTL-level pulse signal, the rising edge is the synchronization benchmark, and the falling edge is the end of the data. You can enter the AT command to modify the can port, UART port, and USB port settings. During its long-term cooperation with the partner, huiju communication understands various requirements for device development. In order to allow technicians to develop wireless synchronization application device prototypes as soon as possible, it has re

strength. No linear transmission is required. The maximum outdoor transmission range is 300 meters, and the maximum indoor transmission range is 100 meters if obstacles exist. This is the most widely used transmission protocol. How wide can WLAN cover? Generally, the scope of WLAN coverage depends on whether the environment is open or not. If an external antenna is not added, it is about 250 m in the field of view. If it is a semi-open space with an

used to set up a wireless network. In this way, network resources can be shared in a wireless mode with an existing wired architecture. Q3: Will WLAN interference or affect the operation of other devices? ANS: basically, the frequency band used by wireless networks is within the high frequency range of ISM 2.4GHz. It does not interfere with the electrical appliances used in daily life or office, because the frequency is quite different, in addition, the wireless network itself has 12 channels a

(including ISI and adjacent channel interference ICI) suppression, and smart antenna technology to maximize the reliability of the physical layer. For example, the performance can be further optimized by combining technologies such as adaptive modulation, adaptive encoding, dynamic sub-carrier allocation, and dynamic bit allocation algorithms. In addition, compared with single-carrier systems, OFDM still has some disadvantages, which are susceptible

and Electronics Engineers. IEEE 802.11b, also known as Wi-Fi, uses an open 2-4 GHz direct sequence spread spectrum with a maximum data transmission rate of 11 Mbps, you can also adjust the transmission rate to 5.5 Mbps, 2 Mbps, and 1 Mbps Based on the signal strength. No linear transmission is required. The maximum outdoor transmission range is 300 meters, and the maximum indoor transmission range is 100 meters if obstacles exist. This is the most widely used transmission protocol. How wide can

sure that network technicians configure and test according to the following suggestions. Wireless Network deployment 1. Configure the antenna installation location This is the first step to achieve "non-leak" wireless access nodes. the wireless signal coverage is used to determine the location of the Access Node antenna. Do not place the antenna next to the wind

to penetrate it. This is a problem that many netizens are most concerned about. We all hope that wireless signals can penetrate at least the wall in the House to Improve the Ability of wireless signals to penetrate the wall. An effective way is to increase the gain of the antenna, when purchasing Wireless AP, we 'd better choose products with high antenna gain. Generally, at least 2 dBi is required. Based