According to IHS iSuppli's research, the regulator's growth rate will continue to be faster than the overall analog integrated circuit (IC) market and semiconductor market, and the compound annual growth rate for 2009-2015 will reach 16.0%. In contrast, the combined annual growth rate of the overall analog IC market and the overall semiconductor market during the same period was 11.9% and 6.3%, respectively. The regulator is a fast-growing market, with sales expected to grow from $9.1 billion in 2010 to $16.3 billion in 2015. The annual growth rate is higher than other analog IC markets.
The chart above shows IHS iSuppli’s forecast for global regulator sales for 2010-2015.
Leading supplier regulators account for the largest proportion of general-purpose analog IC operating revenue. Therefore, maintaining a strong position in the regulator field will eventually boost the revenue growth of analog IC vendors.
In 2010, Texas Instruments was the leader in this field, with related operating income of 1.7 billion U.S. dollars and a market share of 18.0%. Maxim Integrated Products ranks second with operating revenue of US$936 million and holds a 10.2% share. National Semiconductor’s regulator’s operating revenue was US$758 million, with a share of 8.3%.
The advantage of Texas Instruments is simulation, while ADI is dominant in the field of general-purpose analog ICs. Texas Instruments is the strongest. The company ranked first in three of the four general-purpose analog domains, including regulators, amplifiers, and interface ICs. Overall, TI's general-purpose analog ICs accounted for 57% of its total simulated revenue.
One area where Texas Instruments has not won the top spot is data converters, Analog Devices Inc. (ADI) is the leader in this field. ADI has a 39% share in this area, followed by Texas Instruments with 22%.
Data converters account for 54% of ADI's general-purpose analog IC revenue and 44% of its total semiconductor revenue. Although TI has made progress in narrowing the gap, ADI will dominate the data converter market in the foreseeable future.
What is a wireless AC controller? What does it do?
Wireless AC controller is a kind of network device, such as the AC100/150 of Fengrunda, which can be used to centrally control and manage wireless aps. It is the core of a wireless network and is responsible for managing all wireless aps in the wireless network. AP management includes: delivering configuration, modifying related configuration parameters, RF intelligent management, and access security control.
Why use a wireless controller, and what exactly does it do?
In fact, the role of the wireless controller is to play a gateway function between the WLAN and the Internet (on the router), and the data from different access points are aggregated and accessed to the Internet. The role of an access point (AP) is to complete wireless access, and it can control user access through network flags.
The role of wireless controllers
1, Flexible networking mode and excellent scalability
The AP does not need to be directly connected to the AC, so that the AP can be deployed in any place that needs to be covered through the network, such as you deploy an AP in each employee's home, and then connect to the wireless controller inside the enterprise through the VPN, you can expand the wireless network of the enterprise to the family of each enterprise member.
2, intelligent RF management functions, automatic deployment and fault recovery
Through the dedicated RF management module, we can initially estimate the AP deployment according to the user's architectural design drawing, and can calculate the average bandwidth of the wireless terminal, the coverage between AP and AP in the actual debugging process.
3. Centralized network management
All the configuration of the wireless network can be completed by configuring the wireless controller. For example, enable, manage, and maintain all AP devices and mobile terminals, including all functions such as radio wave spectrum, wireless security, access authentication, mobile roaming, and access users.
4, powerful roaming function support
The wireless controller uses AP as the boundary combined with fast RF management system, which greatly reduces the connection time between wireless client and AP, and thus realizes the function of fast roaming.
5. Load balancing
AP and wireless controller systems can distribute wireless users or terminals to nearby aps within the coverage area of an AP, ensuring the number of each wireless terminal or the sum of AP bandwidth transmission or the upper limit of each wireless terminal bandwidth.
6, wireless terminal positioning, rapid fault location and intrusion detection
Wireless controllers can track and locate the location of wireless terminals, such as wirelessly connected computers, PDAs and Wi-Fi mobile phones.
7, powerful access and security policy control
At present, the wireless system supports authentication of 802.1, WEB authentication, MAC, SSID, VPN, etc., and supports various encryption modes such as WEP, WPA, WPA-PSK, WPA2, etc., and all configurations can be configured globally through the wireless controller.
8, Qos support
AP and wireless switching systems can limit the maximum bandwidth of a user's wireless connection within each user's privileges. For different IP services, the system can also define different QoS queues through the wireless switch module. For example, for wireless voice applications, SIP and RTP protocols can be set in the high queue, while common applications such as http and ftp can be set in the low queue.
The wireless controller AC is more advanced than the AP, plays the role of manager in the wireless network, and the wireless controller AC also acts as a client to complete a series of functions in the wired network (such as authentication, authentication, etc.). However, wireless controller AC is not a WLAN device specified in the 802.11 protocol family, but as a supplement to the protocol in specific applications, and its price far exceeds that of ordinary access point (AP) devices.
In small-scale wireless networks that use only a few aps, it is not economical to use expensive wireless controller AC equipment. However, if the number of wireless aps is large, more than 20 can be used AC controller.
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