【正文】 s recently blue the tooth standard to develop approaches the long distance transmission technology therefore to have the manufacturer to promote cuts the mode of transmission the conformity plan. Rong Xue Lanya and two wireless installment, AirVast also promoted at the end of last year causes with the frequency is the 24GBz WCDMIA technology speed is 5l2kbps, however in the outdoor transmitting range might reach 500 meter its anti to do the dominance also pared to the blue tooth, ~ HomeRF wise this technology also waits for middle the promotion.Blue tooth39。s application market oneself bees application concept present new technical standard which from pure substitution wire39。s concept the new network enters ties to use to support mass data processing and the high speed phantom transmission, chip the manufacturer also faces the single chip clip to enter the type system design to gather module entire in Ic. Enables the entire module small, therefore also pre counts after the blue tooth module price falls largely the new wave should also increase with the product along with it, like Ericsson and Nokia minute put in order positively on ten the the blue tooth produces Taiwan on the handset which to them, but the Taiwan also has Gongyanyuan and many manufacturers separately with overseas too factory technique the technique cooperation, grows in application product like BuLeb~odem which, Notebook all quarters pound to construct the blue tooth as well as other Pc and future and so on IA related development will also bee the 3G handset39。s standard to match to prepare, therefore involving domain extremelyBroad, simultaneously the technology in the development initial period degree of difficulty it can be imagined, the light is the blue tooth and the extant transmission meets the mouth to put in order Taiwan and the test awaits the solution, interoperability confirms Iraqi however to bee the crucial topic which the blue tooth develops.Bluetooth in a product plan39。s big demand, is schedules quite in the standard loosely. Causes CMOS system Cheng Yineng suitable to use. Might reduce the chip manufacture the cost to cause about 2002 reduces to 5 US dollar standard possibilities increases, then could stimulate the market demand by low price . This conception39。s general orientation is correct, but until now Bluetooth in chip set39。s development progress, also if just standard interlinked presents question one, but far is inferior anticipated quick.2 the chip set quantity produced the time to postpone to 2001 the second half of the yearAlthough the Bluetooth standard is not severe, but the field experience develops the insufficiency in the RF, causes the development progress and was inferior that anticipated smooth, the practical time postpones repeatedly, field appraisal pared to original predetermined will extend the latter part from the to extend half in the future again most early the year. Then might produce goods massively in the second half of the year take the chip set as the example original estimate in 2000, but in fact the major part entrepreneur39。s quantity produces plans to delay until in 2001 the second half of the year. Although as for highest boundary39。s single chip (RF, base frequency and the Flash conformity were one) soon to 2002 the year in the first half of the year or in 2002 the second half of the year, Fang Hui step the quantity to produce the stage.3 the actual performance requirement pared to estimates in a big way originallyThe field initially in appraised Bluetooth technology development indeed to have the too optimistic manner, if to MPU processing could the strength request, the smallest signal receiving sensitivity decide as 170 dBm afterward to discover that originally was insufficient enhances to 180 dBm but then change part construction, if MPU handling ability strengthened, the Flash capacity must with enhance therefore designs and the system regulation must the newly only RF processing not, if the logical product that were pure entire the alignment procedure to be very tedious this is precisely the partial entrepreneur rather time uses two chips at the beginning of the , even three chipsThe way, reduces above not to be clear about the development barrier reason which the variable creates.The Bluetooth chip usually is by RF, the base frequency and Flash the memory three big chip fabrics bees. These three chips in the function, in the design and the system regulation39。s request difference are enormous, entrepreneur respective has the unique solution way, achieves reduces the cost or enhancement nature can and so on different goal, does separates the market for the area the demand spot to throw the pioneer entrepreneur who enters the Bluetooth development to be possible Agere Systems (original Lucent micro electron services department), Cambridge Si1icon Radio (csR), Phi1ips, National Semiconductor (NS), Silicon Wave and panies and so on TI to be representative roughly.By certain pioneer entrepreneur39。s technology development condition, may send presently the Bluetooth chip solution way by no means solely to melt mountain founder Ericsson to hold up the picture the blueprint not necessarily is the pattern which various entrepreneurs must follow. Is on the contrary various entrepreneurs after considering own technology to be able the strength and the market produce strategy, plans the product opens turns blue the chart to be unique, is especially biggest by the RF difference. Uses the CMOS system regulation, although has the petitive power in the cost, in the design is not actually easy to meet the system performance requirements the standard. Although has certain industry initial period namely to lock in the CMOS development, but many entrepreneurs rather first was still big in the Bi6310S high and low merit, although cost possibly slightly high, actually easy to meet the performance requirement, is helpful enters the market in the ahead of time.In