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1、HowtodesignaGOODinternalantenna?如何設(shè)計一個好的內(nèi)置天線CONFIDENTIALPIFAshortcircuited<=>?/4resonator<=>compactstructure（短接電路<=>?/4諧振片<=>緊湊的結(jié)構(gòu)）omnidirectionalinhorizontalplane（水平面的全方向性）co-andcrosspolarisations（同向和交叉極化）Multiresonant（多諧的）CONFIDENTIALNumberONErule(首要規(guī)則)Whendesigninganyki
2、ndofsmallantennaforthemobilephone,it’simportanttostartdesigningtheantennaTOGETHERwiththeantennamanufacturerinveryearlystatetoachievethebestpossibleperformance,andwhenconcerninginternalantennasthisisevenMOREimportant（在設(shè)計任何種類的移動電話天線時，為了得到盡可能最好的性能，和天線制造商在最初階段一起開始設(shè)計天線是很重要的，這對于
3、內(nèi)置天線來說尤為重要。）CONFIDENTIALRuleNo.2（規(guī)則2）Useallspaceyouhave:BIGsizeisbeautifulwhenconcerningantenna’sperformance（使用盡可能多的空間：對于天線的性能來講，尺寸越大越好。）CONFIDENTIALRuleNo.3（規(guī)則3）Payspecialattentiontoantenna’sheight(distancebetweenradiatorandground)<=>BANDWIDTH!（請密切注意天線的高度（發(fā)射片和接地片的距離）<=>帶寬
4、）CONFIDENTIALRuleNo.4（規(guī)則4）Alsothelengthofthechassishasaremarkableeffectontheperformanceoftheantenna手機的長度對于天線的性能有著顯著的影響Verticallypolarisedgain[dBi]-9-8-7-6-5-4-3-2-1095908580757065605550454035302520gainchassis'length[mm]CONFIDENTIALRuleNo.5（規(guī)則5）KeepALLmetalsasfaraspossiblef
5、romtheantenna,atleastasfarasgroundplaneis（所有的金屬應(yīng)盡可能的遠離天線，至少象接地片一樣遠。）CONFIDENTIALRuleNo.6（規(guī)則6）Locatefeedingandshortcircuitingpadsneartheedgeofthegroundplane(phone’sPCB).ForspringcontactsthedistancebetweenbendingpointandPCB-padshouldbe4…5mm.（把饋點和短接電路點接近于接地片的邊緣（手機的PCB板），對于彈簧片
6、接觸來說，彎折點和PCB焊點的距離應(yīng)為4…5毫米）CONFIDENTIALRuleNo.7（規(guī)則7）Don’t“shield”padsortrytominimizeshielding（不要屏蔽焊點或是試圖減少遮護板）CONFIDENTIALRuleNo.8（規(guī)則8）Lettheradiator’sedges“see”freeedgeofgroundplaneasmuchaspossible,maybeevenreachoverthegroundplane’sedge（發(fā)射片的邊緣盡可能接近接地片的邊緣，甚至發(fā)射片可以超出接地片的邊緣）CON
7、FIDENTIALRuleNo.9（規(guī)則9）Allmetalsofthechassishavetobeproperlygroundedtoavoidpowerlossesandadditionalnon-radiatingresonances.PayspecialattentiontoRF-gaskets.（手機的所有金屬必須正確的接地，避免能量損失，和附加的不輻射的諧振。關(guān)注射頻墊圈。）CONFIDENTIALRuleNo.10(規(guī)則10)Letthespacebetweenradiatorandgroundplanebefilledwi
8、thairasmuchaspossible,inotherwordsuseaslittlesupportmaterialaspossible（使發(fā)射片和接地片之間的空間盡可能多地
