設(shè)計內(nèi)置天線的方法課件

HowtodesignaGOODinternalantenna?

如何設(shè)計一個好的內(nèi)置天線

CONFIDENTIALHowtodesignaGOODinternal1PIFAshortcircuited<=>/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）CONFIDENTIALPIFAshortcircuited<=>/4r2NumberONErule(首要規(guī)則)Whendesigninganykindofsmallantennaforthemobilephone,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，這對于內(nèi)置天線來說尤為重要。）CONFIDENTIALNumberONErule(首要規(guī)則)Whendes3RuleNo.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.2（規(guī)則2）Useallspace4RuleNo.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）CONFIDENTIALRuleNo.3（規(guī)則3）Payspeciala5RuleNo.4（規(guī)則4）Alsothelengthofthechassishasaremarkableeffectontheperformanceoftheantenna手機(jī)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.4（規(guī)則4）Alsotheleng6RuleNo.5（規(guī)則5）KeepALLmetalsasfaraspossiblefromtheantenna,atleastasfarasgroundplaneis（所有的金屬應(yīng)盡可能的遠(yuǎn)離天線，至少象接地片一樣遠(yuǎn)。）CONFIDENTIALRuleNo.5（規(guī)則5）KeepALLmeta7RuleNo.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(jī)的PCB板），對于彈簧片接觸來說，彎折點和PCB焊點的距離應(yīng)為4…5毫米）CONFIDENTIALRuleNo.6（規(guī)則6）Locatefeedin8RuleNo.7（規(guī)則7）Don’t“shield”padsortrytominimizeshielding（不要屏蔽焊點或是試圖減少遮護(hù)板）CONFIDENTIALRuleNo.7（規(guī)則7）Don’t“shield9RuleNo.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）CONFIDENTIALRuleNo.8（規(guī)則8）Lettheradia10RuleNo.9（規(guī)則9）Allmetalsofthechassishavetobeproperlygroundedtoavoidpowerlossesandadditionalnon-radiatingresonances.PayspecialattentiontoRF-gaskets.（手機(jī)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.9（規(guī)則9）Allmetalsof11RuleNo.10(規(guī)則10)Letthespacebetweenradiatorandgroundplanebefilledwithairasmuchaspossible,inotherwordsuseaslittlesupportmaterialaspossible（使發(fā)射片和接地片之間的空間盡可能多地被空氣填充，即使用盡可能少的支撐物。）

CONFIDENTIALRuleNo.10(規(guī)則10)Letthespa12HowtodesignaGOODinternalantenna?

如何設(shè)計一個好的內(nèi)置天線

CONFIDENTIALHowtodesignaGOODinternal13PIFAshortcircuited<=>/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）CONFIDENTIALPIFAshortcircuited<=>/4r14NumberONErule(首要規(guī)則)Whendesigninganykindofsmallantennaforthemobilephone,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，這對于內(nèi)置天線來說尤為重要。）CONFIDENTIALNumberONErule(首要規(guī)則)Whendes15RuleNo.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.2（規(guī)則2）Useallspace16RuleNo.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）CONFIDENTIALRuleNo.3（規(guī)則3）Payspeciala17RuleNo.4（規(guī)則4）Alsothelengthofthechassishasaremarkableeffectontheperformanceoftheantenna手機(jī)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.4（規(guī)則4）Alsotheleng18RuleNo.5（規(guī)則5）KeepALLmetalsasfaraspossiblefromtheantenna,atleastasfarasgroundplaneis（所有的金屬應(yīng)盡可能的遠(yuǎn)離天線，至少象接地片一樣遠(yuǎn)。）CONFIDENTIALRuleNo.5（規(guī)則5）KeepALLmeta19RuleNo.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(jī)的PCB板），對于彈簧片接觸來說，彎折點和PCB焊點的距離應(yīng)為4…5毫米）CONFIDENTIALRuleNo.6（規(guī)則6）Locatefeedin20RuleNo.7（規(guī)則7）Don’t“shield”padsortrytominimizeshielding（不要屏蔽焊點或是試圖減少遮護(hù)板）CONFIDENTIALRuleNo.7（規(guī)則7）Don’t“shield21RuleNo.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）CONFIDENTIALRuleNo.8（規(guī)則8）Lettheradia22RuleNo.9（規(guī)則9）Allmetalsofthechassishavetobeproperlygroundedtoavoidpowerlossesandadditionalnon-radiatingresonances.PayspecialattentiontoRF-gaskets.（手機(jī)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.9