1325237 攻、發明說明： 【發明所屬之技術領域】 本發明一般與通信裝置有關’特定言之，與具有一增強 輕射效能之系統的通信裝置有關》 【先前技術】 使用通信裝置如行動電話等的方式影響其輻射效能。通 常’一使用者將該通信裝置放於他/她的頭部旁，使該裝置 之話筒與他/她的嘴對齊以向該話筒講話，並使該裝置之耳 機與他/她的耳對齊以收聽該耳機產生之輸出信號。某些行馨 動電話配備了一揚聲器以實現不用手的操作。當使用不用 手的操作時，在行動電話通話中，行動電話置於與使用者 相隔的某個固定距離處。例如此處所描述之行動電話的區 域環境之變化影響其輻射效能。輻射效能於是直接影響一 行動電話或其他通信裝置所提供服務之品質。通信裝置如 行動電話等必須達到管理與工業規定標準。管理機構決定 一通信裝置在一指定頻帶中可發射之最大輻射功率量、在 運行頻帶之外的輻射發射最大允許量、以及特定吸收率或籲 能里沈積之允許限度。工業標準依從管理標準，並決定一 所給運行頻帶之最小允許輻射位準。結合起來，這些通信 裝置標準限制一通信裝置可發射之最大與最小功率、最大 帶外輻射發射以及能量沈積之最大位準。 為計量一通信裝置之現場工作表現，此類裝置的製造者 以各種輻射測試來衡量其輻射效能。裝置製造者在「自由 現場j中測量其產品的有效輻射功率（effective radiated 86582 1325237 power，ERP)。製造者測量其產品之ERp時，將其置於一「 狄忐模式」下的幻像（模擬人體頭部與身體）旁。製造者亦在 各種其他使用者位置下測量其產品之ERp。通常，自由現 場中之ERP比談話模式中的高出許多分貝。製造者採用一 模擬人 m 模型（Slmulated anthr〇p〇m〇rphic 脱仙叫他；sam) 幻像與工業標準測量程序以測量其產品之能量沈積◊最大 化私射功率以達到ERp測試與最小化能量沈積之間的矛盾 f通L裝置製造者提出了困難的設計挑戰◊已知減少發射 器輸出功率會減少一通信裝置之能量沈積。減少發射器輸 出功率亦會減少ERP ^例如，為達到能量沈積之要求，一 製造者可能必須減少其通信裝置之ERp。在此情況下，減 / ERP使通信裝置之範目減少並消極影響其服務品質。為 達到不需要的帶外輻射之電磁準則（electr〇magnetic e〇mpliance; EMC)標準，製造者利用各種遮罩方法以減少 通仏裝置 < 發射。例如在通信裝置之塑膠外殼上以較隨機 方式塗体導電塗料，以提供遮罩與/或僅為裝飾目的。然而 現今的方法既不識別亦不解決此類遮罩給能量沈積帶來 之潛在影響。 通L裝置設計者亦關心最小化此裝置之金屬元件帶給 SD敏感組件的有害靜電放電（……。咖以如仏犯# ;ESD) 效應。例如，許多通信裝置利用一圍繞於顯示器周邊之金 屬外圈以獲取機械穩定性與顯示器之保護。通常，該金屬 外圈與無線電底盤（如印刷電路（printed circuit ; PC)板接地 平面）<導電組件機械及電相連。此連接之一缺點為，其提 86582 1325237 供一 RF電流流過顯示器的路徑，最終增加能量沈積。由於 技術進步允許通信裝置之尺寸變小且重量變輕，為達到Θ 上詳述之效能要求，所需實施必要輻射增強特徵之可用而 間受到限制，對裝置製造者提出了進一步挑戰。 【發明内容】 如所要求，本發明之詳細具體實施例於此處揭示；然而 ，應暸解所揭示之具體實施例僅為本發明之範例，其可由 各種形式具體實施。因而，此處揭示之特定結構與功能細 節不可理解為具有限制性，僅可作為申請專利範圍之—其 礎與教授熟習此技術之人士將本發明變化應用於任何適當 細述之結構的一代表性基礎。進一步而言，此處使用之術 語及辭令並非具有限制性，而係為提供一本發明之可理解 描述。 如此處所用，術語一或一個定義為一個或多於一個。如 此處所用，術語複數個定義為兩個或多於兩個。如此處所 用，術語另一定義為至少一第二個或更多。如此處所用， 術語包括與/或具有定義為包含（即開放語言）。如此處所用 ，術語耦合的定義為連接的，儘管不一定直接地與機械地 。如此處所用，術語程式定義為一設計用於在一電腦系統 上執行之指令序列◊一程式或一電腦程式可包括一子常式 '一函數、一程序、一目標方法、一目標實施方案、一可 執行應用程式、一applet(微應用程式）、_servlet(伺服小 裎式）、一原始碼、一目標碼、一共享程式庫/動態載入程 式庫與/或其他設計用於在一電腦系統上執行之指令序列。 86582 -9- 1325237 【實施方式】 圖1說明根據本發明之一通信裝置1 〇。通信裝置1 〇較佳地 為一語音通信裝置。例如，通信裝置丨0可為一行動電話（如 圖所示），一無線電話，一有線陸線電話，或一個人通信器 ，如 Schaumburg,Illinois的 Motorola Inc.生產之 V200個人通 信器。在下列描述中，術語「通信裝置」係指以上提及之 任一通信裝置或其等效物。通信裝置1〇較佳地包括一前部 外殼20與一後部外殼3〇。前部外殼2〇與後部外殼％在通信 裝置10中之作用主要包括覆蓋、保護與支撐複數個組件， 例如封裝於一印刷電路（PC)板25中的組件。與複數個組件 起，印刷電路板25包括一接地平面，其與該等複數個組 件耦合，為該等複數個組件接地。熟習此技術人士可以理 解射頻（radio frequency ; RF)電流與直流（direct；dc) 均流過該接地平面。該通信裝置進一步包括一電池35，其 通常放置於後部外殼30之内或之旁。通信裝置1〇進一步包 括一天線45、一顯示器40、一顯示器外圈6〇、一顯示器透 鏡70、一揚聲器5〇、及一袖珍鍵盤裝配件，其通常放置 於前部外殼20之内或之旁。袖珍鍵盤裝配件肋使得通信裝 置之使用者可輸入資料，例如電話號碼與文字筆記。顯 示器40顯示資料，如一或更多通信訊息、f話號碼或來電 顯示。顯示器40可為例如一用以顯示文字之液晶顯示器。 熟習此技術人士可以理解其他類似顯示器如點矩陣顯示器 可用作顯示1140。顯示器外圈6G為顯示器4()提供機械支撐 與保護。顯示器透鏡7G可為裝飾性以為顯示器则圍提供 86582 -10· 1325237 裝飾設計自訂並為顯示器40表面提供保護。 根據本發明，通信裝置10較佳地進一步在通信裝置1〇之 或多個表面上包括一或多個遮罩9〇。根據本發明，當併 入了多於一個的遮罩時，該等複數個遮軍相互電磁轉合。 該等一或多個遮罩90較佳地位於通信裝置1 〇之前部外殼2〇 中。一或多個遮罩90較佳地延伸覆蓋於通信裝置1〇之至少 大邵分前側上’實質上與前部外殼20之尺寸相近。熟習此 技術人士可以理解一或多個遮罩9〇可進一步延伸覆蓋於根 據本發明之通信裝置1 〇的一或多個其他側上。如圖2之斷面 圖所示，一或多個遮罩90較佳地包含一導電層1 〇〇及一機械 支撐遮罩之介電層110。介電層110可為一為機械支撐而設 計的聚碳酸酯，並形成前部外殼20或後部外殼3〇之一部分 ’或可為一材料’其電特徵選為可進一步增強遮罩效能。 一或多個遮罩90將從通信裝置1〇之表面發出的射頻（RF)能 量重新導引並明確地遠離使用通信裝置1〇的人。一或多個 遮罩90如一導向器或反射器般工作，使得一或多個遮罩90 可放置於通信裝置1〇之前侧或後側上，其取決於所需的輻 射能量方向。一或多個遮罩9〇的作用使得藉由天線45發出 之餐射犯量心向遠離裝置使用者的方向（即當實質上置於 前部外殼20t内時，透過後部外殼3〇發射能量”一或多個 遮罩90進一步可抵消磁性近場，因而減少能量沈積。 在本發明之具體實施例中，一或多個遮罩9〇整合入圖1 中通仏裝置10之前部外殼20 ^後部外殼30保持未遮罩以為 所發射能量提供一輻射表面。一或多個遮罩90各自較佳地 86582 -11 - 1325237 包含一浮動遮罩’其覆蓋前部外殼2〇之大部分開口。—或 多個遮罩90於電意義上浮動，其不與天線45接地發生電接 觸，天線45接地通常由印刷電路板25接地及任何與之附著 的接地與/或金屬元件組成。一或多個遮罩9〇因而與接地平 面及印刷電路板25之其他金屬組件上藉由歐姆或導電接觸 流動的射頻電流絕緣。一或多個遮罩9〇與接地平面及其他 組件電磁耦合。 一或多個遮罩90可為通信裝置10之一或多個個別獨立元 件、通信裝置1 〇之一或多個配件（如一皮帶夾、保護盒或套 子），或者可整合入通信裝置10之前部外殼20或後部外殼30 。例如’ 一或多個遮罩90可由導電塑膠模塑前部外殼2〇， 藉由在前部外殼20表面上噴濺'塗覆或真空沈積一導電層 而製彳于。類似地，一或多個遮罩9〇可由以金屬構建前部外 殼20、或在前部外殼2〇之内、中或外表面上放置一金屬元 件而製得。例如，金屬插人物，模塑線，模塑線網，導電 氧化物或碳層或任何其组合可模塑於前部外殼2〇之中。熟 習此技術A 士可以理解一或多個遮罩9〇可由使用此處前述 之任何組合或其等效物而製得。 k &本發明描述為一或多個遮罩9〇包裝於通信裝置1〇之 前側上（即前部外殼2〇之中），熟習此技術人士可以理解其可 放置於通信裝置10之後側上（即後部外殼30之中）。例如，在 通仏裝置1G中，揚聲器5G與—話筒置於通信裝置1〇之後 2以致使用者講話時顯示器輝開使用者頭部，可使用與 則述义刖部外殼2〇相等同的技術將該通信裝置中一或多個 86582 -12- 1325237 遮罩90置於後側，例如後部外殼30之中。 類似地’根據本發明’當通信裝置1〇包括一可移動翻轉 結構，該翻轉結構之選擇性區域可受到料，以藉由實質 上在翻轉結構中包括—或多個遮罩9㈣減少能量沈積。在 此類通信裝置1G中，如其僅包含揚聲器5()，該翻轉結構可 不輻射。此處顯示器40與袖珍鍵盤裝配件8〇可受到遮罩， 而翻轉結構部分可保持不受遮罩。在-其翻轉結構容納了 天’泉45與顯不器40之通信裝置1〇中，該翻轉結構面向外部 的表面受到遮罩°包含印刷電路板25與袖珍鍵盤裝配件8〇 的通#裝置10之底座例如可留為不受遮罩以形成韓射表面。 圖3展π 了為增強根據本發明之通信裝置1〇的輻射效能 (系統115的斷面®。如圖3所示，通信裝置1〇内之系統U5 包括一或多個遮罩90、一間隔物12〇、顯示器外圈6〇、及一 或多個阻柷區塊，例如一第一阻抗區塊125、一第二阻抗區 塊130、與/或一第三阻抗區塊135。 系統115之一或多個遮罩9〇如此處前述增強通信裝置1〇 足輻射效能《機械放置於一或多個遮罩9〇與顯示器外圈6〇 間 < 間隔物120可為一絕緣體、墊圈、或一等效物以控制一 或多個遮罩90與顯示器外圈6〇間之分隔距離。根據本發明 ，間隔物120之放置使得可防止RF電流自顯示器外圈6〇導電 地流向一或多個遮罩9〇。調節一或多個遮罩9〇與通信裝置 10中導電材料間之距離可調節一或多個遮罩9〇的效能之效 果。需要通信裝置10中導電材料與一或多個遮罩9〇間之一 最小距離’以使一或多個遮罩9〇有效。在通常應用中，如 86582 •13- 1325237 圖1 2 3 4 5 6 7 8 9所示，金屬顯示器外圈6〇為距一或多個遮罩9〇最近之導 電材料。因而使用間隔物12〇以藉由在一或多個遮罩9〇與最 近導電元件間造成一最佳距離來控制效能之效果。 顯不器外圈60較佳地為一與通信裝置1〇組件之rf電流絕 緣的金屬顯示器外圈。亦即，根據本發明之一較佳具體實 施例’顯示器外圈60為電浮動，因而防止RF電流流過顯示 备外圈60及位於印刷電路板25上之通信裝置1〇的電路接地 。當金屬顯示器外圈60與RF電流絕緣（或為RF目的而斷路） 自裝置使用者之人體至RF源的有效距離增加。 較佳地，並根據本發明，使用如第一阻抗區塊125與第二 阻抗區塊130疋一或多個阻抗區塊以使顯示器外圈6〇與适 仏裝置10之印刷電路板25絕緣。顯示器外圈6〇與印刷電辟 ]之或多個阻抗區塊提供一直流（direct current ;DC 接地路徑並同時提供RF絕緣β藉由使用—或多個阻抗區瑰 以使金屬顯示器外圈6G絕緣，顯示器外圈6q與印刷電路板 =上之導電軌跡解^實際上，通信裝置1()上載送相當數 IRF電流之金屬部分與—或多個遮罩％間的距離增加。額 1 —或多個阻抗區塊建立的歐姆連接藉由提 供-路徑使電荷圍繞顯示器4〇流動，以及阻塞射頻㈣電 2 流’而進-步為顯示諸提供㈣保護。—或多個阻抗區 3 塊125、130組成一頻率佑专υ日4上 _ 4 貝手依靠阻杬，其可用於調節顯示器外 5 圈60與印刷電路板25間在 6 . 社坶L衮置10母個運行頻帶中之耦 7 合。用它們最佳化一或多個遮罩 早I頻率回應與顯示器外 8 圏60之頻率回應。一進_ 9 艾，處為，—或多個阻抗區塊 10 86582 1325237 亦提供—路徑以將靜電放電電流自顯示器40(見圖υ引開。 一或多個阻抗區塊中至少一個阻抗區塊如圖3之第三阻 抗區塊1塊佳職械放置於根據本發明之—❼個迷罩 规印刷電路板25間，以在—❹個遮罩9Q與印刷電路板 25間提供韓合㈣。例如，此阻抗區塊可藉由—接點機制 ，如一彈黃或任何其他此技術中熟知之接點構件而血—或 多個遮罩90及印刷電路板25接觸。根據本發明，如第三阻 抗區塊135的至少—個阻抗區塊包含_頻率依靠阻抗，丈中 調節該頻率依靠阻抗可調節—或多個遮罩9q與印刷電路板 25間在一或多個頻帶中的耦合。 熟習此技術人士可以理解可使用多個阻抗區塊在所有感 興趣的頻帶，在-或多個遮罩9G與印刷電路板25間及顯: 器外圈6G與印刷電路板25間產生RF斷路。熟習此技術人士 可進-步轉鮮餘抗㈣可包含感應器、傳輸線、與/ 或調諧網路之任意組合以降低顯示器外圈60與/或一或多 個遮罩90上之RF電流.浮動遮罩與浮動金屬外圈之组合可 減少通信裝置10的能量沈積。如此處所描述，本發明使用 一或多個阻抗區塊以實質上增加一裝置使用者的身體與一 通信裝置間之距離’而得到好於先前技術中對於既定機械 尺寸的電效能。 圖4說明根據本發明之通信裝置i Q中的RF電流分佈。如圖 所示’㈣流流動於-或多個遮罩9G上’其方式係為抗衡 通信裝置10之金屬部分上所產生電流。如圖所示，一遮罩 電流分佈140與一導電元件電流分佈145異相。導電元件電 86582 -15- 1325237 流刀佈145在通信裝置1〇的天線45之一天線饋電點i5〇附近 達到峰值。此效果為抵消一或多個遮罩9〇附近之磁場。無 例如金屬顯示器外圈60與印刷電路板25間的第一阻抗區塊 125义一或多個阻抗區塊時，導電元件電流分佈I"將流動 於，.’·員不态外圈60上而實效上使RF電流與通信裝置丨〇之前表 面更為接近。 /圖說月包含本發明之通信裝置中一靜電放電電流路 徑155。如第一阻抗區塊125之一或多個阻抗區塊為dc與 ESD頻率提供一低阻抗路徑。如圖所示，靜電放電電流可 流經顯示器外圈60，流經第一阻抗區塊125並進入通信裝置 1 0之其他接地導電元件。所產生靜電放電電流路徑1 防止 ESD電流流經顯示器4〇與其相關電路並造成可能損害，此 係本發明之又一優點。 熟習此技術人士可以理解增強輻射效能的系統115可於 根據本發明之通信裝置1〇的各種機械裝配結構及設計中實 她。電網路與板間連接器之多種組合可用於改變RF自PC板 向PC板或自顯示器外圈向任何pc板的流動。 例如，圖6說明增強輻射效能的系統115之一斷面圖，該 系統在根據本發明之通信裝置1〇的一替代具體實施例中實 施。明確地講，如圖6所示之通信裝置包括一第一1>€板16〇 與一第二PC板165 ,其藉由一板間連接器17〇電與機械相連 接。如圖所示，系統115之功能為提供減少的能量沈積並增 加通信裝置之此替代具體實施例中之ERp，其方式與此處 前述圖1至5中所描述者類似。 86582 -16 - 1325237 又例如，圖7說明增強輕射效能的系統ιΐ5之一斯面圖， 該系統在根據本發明之㈣裝置的 實施。明確地講，圖7說明—通信裝置1()中系統ιΐ5之實施 ’該通信裝置具有-内部天線’例如—平面反轉f天線 (PUnar Averted F Antenna ; PIFA)175，其與印刷電路板25 藉由-P脱接點⑽接觸，如㈣電話中所廣泛使用。如圖 所示，系統U5之功能為提供減少的能量沈積並增加通信裝 置之此替代具體實施例中之ERP，其方式肖此處前述圖⑴ 中所描述者類似。 根據本發明，一或多個遮罩90之形狀可變化，其取決於 通信裝置10之應用與結構。圖8說明一遮罩之一具體實施例 ，該返罩用於圖1至7中根據本發明之通信裝置。明確地講 ，圖8說明一或多個遮罩90，其由在通信裝置1〇前部外殼汕 <一内部表面185上塗覆或沈積材料而製得。如圖所示，一 或多個遮罩90與模塑塑膠前部外殼2〇保形。 圖9說明圖3中根據本發明之一或多個遮罩9〇的結構之更 多細節。尺寸190調節一或多個遮罩90在較低頻帶中的頻率 且其尺寸實質上與較低頻帶頻率之四分之一波長相似◊尺 寸195調節一或多個遮罩90在—較高頻帶中的頻率且其尺 寸貫質上與該較高頻帶頻率之四分之一波長相似。尺寸2〇〇 調節一或多個遮罩90在另一較高頻帶中的頻率且其尺寸實 質上與另一較高頻帶頻率之四分之一波長相似。尺寸205調 節回應之頻寬。尺寸210、215、220與225調節天線之效率 熟習此技術技術人士可理解一或多個遮罩90之全部尺寸 86582 -17- 1325237 及特徵影響遮罩與其他無線電组件間的耦合係數。進一步 ，熟習此技術人士可理解，如遮罩形狀發生實質改變，尺 寸 < 頻率依靠角色可改變。受_特定尺寸影響之頻帶為波 長依靠。為最佳化一通信袈置之輻射效能，尺寸以如下方 式調節，即引起電流分佈以降低通信裝置1〇之能量沈積的 方式改變。較低的能量沈積増加天線45之效率並改善輻射 ERP 〇 如圖所7JT並根據本發明，—或多個遮罩9〇上提供了開口 以容納顯示器40及袖珍鍵盤組合8〇。一或多個遮罩9〇構建 為在開口周圍提供一歐姆路徑，由此在開口周圍產生—rf 電泥流動之路徑。一或多個遮罩9〇沿通信裝置1〇之面長度 的連續性對向RF電流提供此路徑為必要。 圖10至15說明圖9中根據本發明之一或多個遮罩9〇的各 種#代具姐:r施例。熟習此技術人士可理解其他等同的具 體貫施例亦在本發明之範園中。 在圖14與15所示之本發明具體實施例中，—或多個遮罩 90較佳^含“實f上與—四分之—波長電性長度相似的 寸田其置於特足距離範圍時，其作用為一輻射能量 的導向& jit #由於_或多個遮罩9()中所感應之電流，其 產生在離開使用者的方向較強的總場。通信裝置⑺所含 印刷電路板25上之電流假定為在上下邊緣處較強並觀㈣ 高能量區域接近天線饋電點15〇。當通信裝置1G置於使用者 d#模式）旁時’㈤量區域投射於印刷電路板Μ中心周圍 …或多個遮罩90為—導電元件，其置於印刷電路板邱 86582 1325237 彖附、延伸靠近於印刷電路板25之巾心、，且其一側實質 四刀 < —波長相似。進-步’-頂角置於緊靠天線 饋电點1 50之上以坦；p丨丨真丄兩』 于到最大电泥感應。所得「I形」遮罩如 圖9與10所示。在办音站士 在此實施中，一有效遮罩可由—最小量材料 構建。 根據本發明或多個遮罩9()亦可實質上覆蓋顯示器⑽ 及周邊區域’例如圖1所示顯示器外圈60及顯示器透鏡7〇所 佔據區域。—或多個遮罩9〇之導電層_與介電層110較佳 地包括為提供最佳「ERp平衡」而設計的特徵。介電層⑽ 例如可為—薄的材料’其導電率接近l〇G西Η子/米以在通 信裝置10之受遮罩側上獲得一輻射能量的低強度。其他底 f材料包括高導磁率與高介電係數基板可用以改善遮罩效 flb並為本發明所期待。在此組態中該遮罩進一步減少能量 沈積。正確選擇底座材料之導電率、導磁率與介電係數可 顯著地減少能量沈積而僅引起ERp之微量劣化。此方式中 通L裝置之輻射效能對一能量沈積位準達到最高ERp。 如顯示器40覆蓋通信裝置10表面大部，可能有必要將一 或多個遮罩90延伸橫跨於顯示器4〇的表面上。根據本發明 ，通信裝置10之顯示器40及其周圍區域可藉由對顯示器4〇 與/或顯示器透鏡70加以一導電透明薄膜 '以噴濺金屬處理 其中之一或二者、或增加一中間導電元件而得到遮罩。顯 示器40之遮罩於是與位於前部外殼2〇中的—或多個遮罩％ 接觸並進一步與顯示器外圈6〇絕緣以獲得最佳結果。可用 表面對表面接觸、一導電墊圈、導電黏合劑、導電跨接線 86582 •19- 1325237 、-焊接程序、以上各項之任一組合或一等效物來實現接 觸。例如，顯示器透鏡70可超聲波焊接於前部外殼2〇以造 成電接觸。 需要遮罩顯示器40時’可使用顯示區域上一部分遮罩， 其效能改善受到減少。例如，如圖16所示線、一線網23〇 或部刀薄膜可用於顯示器40或顯示器透鏡上以增加一或 多個遮罩90之光透過。或者，通信裝置1〇可包括一可移動 兀件’其覆蓋顯示器40。此可移動元件可包括與外殼塑膠 相連接之導電材料以形成—或多個遮罩％。圖㈣明實現 橫跨顯示區域之導電元件的—替代具體實施例。如圖所示 ’該導電元件可由使用一導電外殼而實現，該導電外殼設 計為，使用前述方法之任—組合使前部外殼2〇連續存在於 顯不器40之後。進一步，藉由使用前述之一或多個阻抗區 塊，前部外殼20位於顯示器40之後的部分較佳地與印刷電 路板2 5絕緣。 圖is說明遮罩顯示器40的一替代具體實施例。如圖a所 不，顯不器40可使用一顯示遮罩235而得到遮罩，顯示遮罩 235設計為與如前部外殼2〇之導電外殼電性相連，並位於顯 π益40<後。此分離顯示遮罩235與前部外殼2〇可由此前所 述方法之任一組合而製成具有導電性。顯示遮罩235與前部 外殼20導電部分間之電連接可進一步由此前所述方法之任 一組合而實現。 再次參考圖1，一或多個遮罩90亦可包括袖珍鍵盤裝配件 80之遮罩。袖珍鍵盤組合8〇較佳地包含由導電材料製成之 86582 -20- 1325237 袖珍鍵盤按鍵240’並設計為與前部外殼2〇之導電部分電接 觸。熟習此技術人士可以理解—或多個遮罩9〇可由使用前 述方法之任一組合或其等效物而製得。 如此處所描述之本發明提供—系統以減少能量沈積並增 加-通信裝置的ERP效能，從而改善該通信裳置服務的： 質與範圍。儘管本發明以較佳具體實施例方式說明，熟^ 此技術之人士可理解不需脫離本發明就可做出各種變更二 修改。因此，應認為所有此類修改和變更皆屬本發明的精 神與範疇之内，如所附申請專利範圍所界定。 【圖式簡單說明】 本發明已藉由範例性具體實施例來說明，但其並非限制 ，該範例性具體實施例於所附圖式中說明，其中類似的參 考編號代表類似的元件，且其中： 圖1說明一通信裝置。 圖2說明一遮罩之一斷面圖，該遮罩用於圖丨中根據本發 明之通信裝置。 圖3說明一增強輻射效能之系統，該系統用於圖1中根據 本發明之通信裝置。 圖4說明圖1中根據本發明的通信裝置内之—輻射頻率電 流分佈。 圖5說明圖1中根據本發明之一較佳具體實施例的通信裝 置内之一靜電電流路徑。 圖6與7說明圖3中增強輻射效能之系統，如同圖1之通信 裝置的各種具體實施例中所實施。 86582 -21 - 月豆貫施例，該遮罩用於圖1至7中根 圖8說明一遮罩之一具 據本發明之通信裝置。 圖9說明圖8中根據本發明之遮罩的更多細節。 圖10至15說明圖8與9中根據本發明之遮罩的各種替代具 體實施例。 圖16至18說明圖8盘Q士、 圖8與9中又遮罩的各種替代具體實施例， 該遮罩係為圖1中招诚士 & 报據本發明之通信裝置的一顯示器部分。 【圖式代表符號說明】 10 20 25 30 35 40 45 50 60 70 80 90 100 通信裝置 前部外殼 印刷電路板 後部外殼 電池 顯示器 天線 揚聲器 顯示器外圈 顯示器透鏡 袖珍鍵盤裝配件 一或多個遮罩 導電層 介電層 86582 1101325237 Attack, invention description: [Technical field of the invention] The present invention is generally related to a communication device, specifically, relating to a communication device having a system for enhancing light-light performance. [Prior Art] Using a communication device such as a mobile phone or the like The way it affects its radiation efficiency. Usually a user places the communication device next to his/her head, aligns the microphone of the device with his/her mouth to speak into the microphone, and aligns the device's earphone with his/her ear. To listen to the output signal produced by the headset. Some mobile phones are equipped with a speaker for hands-free operation. When using hands-free operation, the mobile phone is placed at a fixed distance from the user during a mobile phone call. For example, changes in the regional environment of the mobile phone described herein affect its radiation performance. Radiation efficiency then directly affects the quality of the services provided by a mobile phone or other communication device. Communication devices such as mobile phones must meet regulatory and industrial standards. The regulatory agency determines the maximum amount of radiated power that a communication device can transmit in a given frequency band, the maximum allowable amount of radiated emissions outside of the operating band, and the allowable limits for deposition in a particular absorption rate or appeal. Industry standards follow management standards and determine the minimum allowable radiation level for a given operating band. In combination, these communication device standards limit the maximum and minimum power, maximum out-of-band radiation emissions, and maximum level of energy deposition that a communication device can transmit. To measure the field performance of a communication device, the manufacturer of such devices measures their radiation performance using various radiation tests. The device manufacturer measures the effective radiated power of the product (free radiated 86582 1325237 power, ERP) in the free field j. When the manufacturer measures the ERp of the product, it is placed in a phantom under the "Die Di mode" (simulation) Beside the human head and body). The manufacturer also measures the ERp of its products under various other user locations. Usually, the ERP in the free field is many times higher than in the conversation mode. The manufacturer uses a simulated human m model (Slmulated anthr〇p〇m〇rphic to remove him; sam) phantom and industry standard measurement procedures to measure the energy deposition of its products, maximize private power to achieve ERp testing and minimization Contradictions between energy depositions have created difficult design challenges for manufacturers of devices. Knowing that reducing transmitter output power reduces the energy deposition of a communication device. Reducing the transmitter output power also reduces ERP. For example, to meet the energy deposition requirements, a manufacturer may have to reduce the ERp of its communication device. In this case, the subtraction / ERP reduces the number of communication devices and negatively affects the quality of service. To achieve the unsatisfactory electromagnetic regulations (electr〇magnetic e〇mpliance; EMC), manufacturers use a variety of masking methods to reduce the ventilation device < For example, a conductive coating is applied to the plastic housing of the communication device in a more random manner to provide a mask and/or for decorative purposes only. However, today's methods neither identify nor address the potential impact of such masks on energy deposition. Designers of the L-devices are also concerned with minimizing the effects of harmful electrostatic discharges (...Essences; ESD) on the components of the SD component. For example, many communication devices utilize a metal outer ring that surrounds the periphery of the display for mechanical stability and display protection. Typically, the metal outer ring is mechanically and electrically connected to a radio chassis (e.g., a ground plane of a printed circuit (PC) board) < One disadvantage of this connection is that it provides 86582 1325237 for an RF current to flow through the display, ultimately increasing energy deposition. As advances in technology allow communication devices to be smaller in size and lighter in weight, the need to implement the necessary radiation enhancement features is limited in order to achieve the performance requirements detailed above, posing further challenges for device manufacturers. The detailed description of the present invention is to be construed as the invention Therefore, the specific structural and functional details disclosed herein are not to be construed as limiting, but only as the scope of the application of the invention. Sexual basis. Further, the terms and expressions used herein are not limiting, but are provided to provide an understandable description of the invention. As used herein, the term one or one is defined as one or more than one. As used herein, the plural is defined as two or more than two. As used herein, the term another definition is at least a second or more. As used herein, the term includes and/or has the definition to include (ie, open language). As used herein, the term coupling is defined as connected, albeit not necessarily directly and mechanically. As used herein, the term program is defined as a sequence of instructions designed to be executed on a computer system. A program or a computer program can include a subroutine 'a function, a program, a target method, a target implementation, An executable application, an applet, a servlet, a source code, a target code, a shared library/dynamic library, and/or other design for use in a computer A sequence of instructions executed on the system. 86582 -9- 1325237 [Embodiment] FIG. 1 illustrates a communication device 1 according to the present invention. The communication device 1 is preferably a voice communication device. For example, the communication device 丨0 can be a mobile phone (as shown), a wireless telephone, a wired landline telephone, or a personal communicator such as the V200 personal communicator manufactured by Motorola Inc. of Schaumburg, Illinois. In the following description, the term "communication device" means any of the above-mentioned communication devices or their equivalents. The communication device 1A preferably includes a front outer casing 20 and a rear outer casing 3''. The front housing 2 〇 and rear housing % functions in the communication device 10 primarily include covering, protecting and supporting a plurality of components, such as components packaged in a printed circuit (PC) board 25. From a plurality of components, printed circuit board 25 includes a ground plane that is coupled to the plurality of components to ground the plurality of components. Those skilled in the art can understand that both radio frequency (RF) current and direct current (dc) flow through the ground plane. The communication device further includes a battery 35 that is typically placed within or beside the rear housing 30. The communication device 1 further includes an antenna 45, a display 40, a display outer ring 6A, a display lens 70, a speaker 5A, and a keypad keyboard assembly, which are typically placed within the front housing 20 or Next. The keypad keyboard assembly rib allows the user of the communication device to enter data such as phone numbers and text notes. Display 40 displays data such as one or more communication messages, f-numbers, or caller ID. Display 40 can be, for example, a liquid crystal display for displaying text. Those skilled in the art will appreciate that other similar displays, such as dot matrix displays, can be used as the display 1140. The display outer ring 6G provides mechanical support and protection for the display 4 (). The display lens 7G can be decorative to provide 86582 -10· 1325237 decorative design customization and to provide protection to the surface of the display 40. In accordance with the present invention, communication device 10 preferably further includes one or more masks 9 on one or more surfaces of communication device 1 . According to the present invention, when more than one mask is incorporated, the plurality of shields are electromagnetically coupled to each other. The one or more masks 90 are preferably located in the front housing 2A of the communication device 1 . The one or more masks 90 preferably extend over the front side of at least the large sub-segment of the communication device 1' substantially similar to the size of the front outer casing 20. It will be understood by those skilled in the art that one or more masks 9 can be further extended over one or more other sides of the communication device 1 according to the present invention. As shown in the cross-sectional view of Fig. 2, the one or more masks 90 preferably include a conductive layer 1 and a dielectric layer 110 of a mechanical support mask. The dielectric layer 110 can be a polycarbonate designed for mechanical support and form part of the front outer casing 20 or the rear outer casing 3' or can be a material whose electrical characteristics are selected to further enhance the matte performance. One or more masks 90 redirect the radio frequency (RF) energy emitted from the surface of the communication device 1A and are clearly remote from the person using the communication device. One or more of the masks 90 operate as a guide or reflector such that one or more masks 90 can be placed on the front or rear side of the communication device 1 depending on the desired direction of the radiation energy. The action of one or more masks 9 使得 causes the dose emitted by the antenna 45 to be directed away from the user of the device (ie, when placed substantially within the front housing 20t, the energy is transmitted through the rear housing 3〇) One or more masks 90 further cancel the magnetic near field, thereby reducing energy deposition. In a particular embodiment of the invention, one or more masks 9〇 are integrated into the front housing 20 of the wanted device 10 of FIG. The rear housing 30 remains unmasked to provide a radiating surface for the emitted energy. Each of the one or more masks 90 preferably 86582 -11 - 1325237 includes a floating mask that covers most of the opening of the front housing 2 - or a plurality of masks 90 are electrically floating, which do not make electrical contact with the ground of the antenna 45. The grounding of the antenna 45 is typically grounded by the printed circuit board 25 and any ground and/or metal components attached thereto. The plurality of masks 9 are thus insulated from the ground plane and other metal components of the printed circuit board 25 by RF current flowing through ohmic or conductive contacts. One or more masks 9 are electromagnetically coupled to the ground plane and other components. or The mask 90 can be one or more of the individual components of the communication device 10, one or more of the communication devices 1 (such as a belt clip, a protective case or a sleeve), or can be integrated into the front housing 20 of the communication device 10. Or the rear outer casing 30. For example, one or more of the masks 90 may be molded from a conductive plastic front casing 2 by means of a coating or vacuum deposition of a conductive layer on the surface of the front outer casing 20. Similarly, one or more of the masks 9 can be made by constructing the front outer casing 20 with metal, or by placing a metal component on the inner, middle or outer surface of the front outer casing 2, for example, a metal insert, a mold. Plastic strands, molded wire mesh, conductive oxide or carbon layers or any combination thereof may be molded into the front outer casing 2〇. It is understood that one or more masks 9 can be understood by using this technique. Any combination or equivalent thereof. k & described herein as one or more masks 9〇 packaged on the front side of the communication device 1 (ie, in the front housing 2〇), familiar with the technology A person can understand that it can be placed on the back side of the communication device 10 (ie For example, in the overnight device 1G, the speaker 5G and the microphone are placed after the communication device 1 2 2 so that the user can speak the user's head when the user speaks, and the user can use the 述 述The housing 2 〇 equivalent technique places one or more 86582 -12-1325237 masks 90 in the communication device on the rear side, such as the rear housing 30. Similarly, 'according to the present invention' when the communication device 1 includes one A movable flipping structure, the selective region of the flipping structure being permeable to reduce energy deposition by substantially including - or a plurality of masks 9 (4) in the flipping structure. In such a communication device 1G, as it only contains the speaker 5 (), the flip structure may be non-radiative. Here the display 40 and the keypad assembly 8 may be covered, and the flip structure portion may remain unmasked. In the communication device 1 in which the flip structure accommodates the sky 'spring 45 and the display 40, the surface facing the outer surface of the flip structure is masked. The device includes a printed circuit board 25 and a pocket keyboard assembly 8 The base of 10 can be left unobstructed, for example, to form a Korean surface. Figure 3 shows the radiant performance of the communication device 1 according to the present invention (section о of the system 115. As shown in Figure 3, the system U5 within the communication device 1 includes one or more masks 90, one The spacer 12〇, the display outer ring 6〇, and one or more blocking blocks, such as a first impedance block 125, a second impedance block 130, and/or a third impedance block 135. 115 one or more masks 9 such as the aforementioned enhanced communication device 1 辐射 radiative performance "mechanically placed between one or more masks 9" and the outer ring of the display 6" spacer 120 may be an insulator, A gasket, or an equivalent, controls the separation distance between the one or more masks 90 and the outer ring 6 of the display. According to the present invention, the spacers 120 are placed such that RF current is prevented from flowing electrically from the outer ring 6 of the display. One or more masks 9. Adjusting the distance between one or more masks 9〇 and the conductive material in the communication device 10 can adjust the effectiveness of one or more masks. The conductive material in the communication device 10 is required. One of the minimum distances between one or more of the masks 9 以 to make one or more masks 9 In normal applications, such as 86582 • 13-1325237, Figure 1 2 3 4 5 6 7 8 9, the metal display outer ring 6 turns into the nearest conductive material from one or more masks. Therefore, spacers are used. 12〇 is to control the effect of performance by causing an optimum distance between one or more masks 9〇 and the nearest conductive element. The display outer ring 60 is preferably a rf current with the communication device 1〇 component Insulated metal display outer ring. That is, in accordance with a preferred embodiment of the present invention, the display outer ring 60 is electrically floating, thereby preventing RF current from flowing through the display outer ring 60 and the communication device located on the printed circuit board 25. 1〇 of the circuit is grounded. When the metal display outer ring 60 is insulated from the RF current (or open for RF purposes), the effective distance from the human body of the device user to the RF source is increased. Preferably, and in accordance with the present invention, An impedance block 125 and a second impedance block 130 are one or more impedance blocks to insulate the display outer ring 6〇 from the printed circuit board 25 of the suitable device 10. The display outer ring 6〇 and the printed circuit] Or multiple impedance blocks provide direct current (direct curr Ent ; DC ground path and provide RF insulation at the same time by using - or multiple impedance zones to insulate the metal display outer ring 6G, the display outer ring 6q and the printed circuit board = upper conductive track solution ^ Actually, the communication device 1() The distance between the metal portion carrying a considerable number of IRF currents and - or multiple mask % is increased. The amount 1 - or the ohmic connection established by the plurality of impedance blocks causes the charge to flow around the display 4 by providing a path , as well as blocking RF (four) electric 2 flow 'and advance - step to provide (4) protection for display. - or multiple impedance zones 3 blocks 125, 130 to form a frequency for the special day 4 _ 4 sheller relies on resistance, it is available Between the 5 turns 60 outside the adjustment display and the printed circuit board 25, the coupling of the 10 mother operating bands is set. Use them to optimize one or more masks. The early I frequency response responds with a frequency of 8 圏 60 outside the display. A _ 9 Å, at, or a plurality of impedance blocks 10 86582 1325237 also provide a path to direct electrostatic discharge current from the display 40 (see Figure 。. At least one impedance region of one or more impedance blocks) A block of the third impedance block of FIG. 3 is placed between the printed circuit boards 25 according to the present invention to provide a Hanhe between the mask 9Q and the printed circuit board 25. (d). For example, the impedance block can be contacted by a contact mechanism, such as a spring or any other contact member well known in the art, or a plurality of masks 90 and printed circuit board 25. In accordance with the present invention, For example, at least one of the impedance blocks of the third impedance block 135 includes a frequency dependent impedance, the frequency is adjusted by the impedance, or the plurality of masks 9q and the printed circuit board 25 are in one or more frequency bands. Coupling It will be understood by those skilled in the art that multiple impedance blocks can be used in all frequency bands of interest, between - or between multiple masks 9G and printed circuit board 25, and between: outer ring 6G and printed circuit board 25. RF disconnection. Those who are familiar with this technology can advance to fresh-resistance (4) Any combination of inductors, transmission lines, and/or tuning networks may be included to reduce RF current on display outer ring 60 and/or one or more masks 90. Combination of floating mask and floating metal outer ring reduces communication Energy deposition of device 10. As described herein, the present invention uses one or more impedance blocks to substantially increase the distance between a device user's body and a communication device' to achieve better than the prior art for a given mechanical size. Figure 4 illustrates the RF current distribution in a communication device i Q in accordance with the present invention. As shown, the '(four) stream flows over the - or multiple masks 9G' in a manner that counters the metal portion of the communication device 10. Current is generated. As shown, a mask current distribution 140 is out of phase with a conductive element current distribution 145. Conductive element power 86582 -15 - 1325237 Flow knife cloth 145 is at one of the antenna feed points of antenna 45 of communication device 1 The peak is reached near i5〇. This effect is to cancel the magnetic field near one or more masks 9〇. There is no first impedance block 125 or one or more impedance blocks between the metal display outer ring 60 and the printed circuit board 25, for example. The conductive element current distribution I" will flow on the ''outer outer ring 60 to effectively bring the RF current closer to the front surface of the communication device. / Figure said that the month contains a static electricity in the communication device of the present invention. A discharge current path 155. One or more of the first impedance blocks 125 provide a low impedance path for the dc and ESD frequencies. As shown, the electrostatic discharge current can flow through the outer ring 60 of the display, through the An impedance block 125 and other grounded conductive elements of the communication device 10. The resulting electrostatic discharge current path 1 prevents ESD current from flowing through the display 4 and its associated circuitry and causing possible damage, which is a further advantage of the present invention. Those skilled in the art will appreciate that the enhanced radiation performance system 115 can be implemented in various mechanical assembly configurations and designs of the communication device 1 according to the present invention. Various combinations of electrical networks and inter-board connectors can be used to vary the flow of RF from the PC board to the PC board or from the outer ring of the display to any pc board. For example, Figure 6 illustrates a cross-sectional view of a system 115 for enhancing radiation performance, which system is implemented in an alternate embodiment of a communication device 1 according to the present invention. Specifically, the communication device shown in Fig. 6 includes a first 1> board 16'' and a second PC board 165 electrically and mechanically coupled by an interboard connector 17. As shown, the function of system 115 is to provide reduced energy deposition and to increase the ERp in this alternative embodiment of the communication device in a manner similar to that described above with respect to Figures 1 through 5 herein. 86582 - 16 - 1325237 By way of another example, Figure 7 illustrates a one-dimensional view of a system ι 5 that enhances light-emitting performance, the system being implemented in a device according to the invention. Specifically, FIG. 7 illustrates the implementation of the system ι 5 in the communication device 1 (the communication device has an internal antenna ', for example, a PUNA Averted F Antenna (PIFA) 175, which is associated with the printed circuit board 25 Contact by the -P disconnect point (10), as widely used in (4) telephones. As shown, the function of system U5 is to provide reduced energy deposition and to increase the ERP in this alternative embodiment of the communication device, in a manner similar to that described above in Figure (1). In accordance with the present invention, the shape of one or more of the masks 90 can vary depending on the application and configuration of the communication device 10. Figure 8 illustrates an embodiment of a mask for use in the communication device of Figures 1 through 7 in accordance with the present invention. Specifically, Figure 8 illustrates one or more masks 90 that are fabricated by coating or depositing material on the front housing 汕 < an interior surface 185 of the communication device 1'. As shown, one or more of the masks 90 conform to the molded plastic front outer casing 2 . Figure 9 illustrates more details of the structure of one or more of the masks 9 in accordance with the present invention. Size 190 adjusts the frequency of one or more masks 90 in the lower frequency band and is substantially similar in size to the quarter wavelength of the lower band frequencies. Size 195 adjusts one or more masks 90 in the -higher band The frequency in and the size is qualitatively similar to the quarter wavelength of the higher frequency band. Size 2 调节 adjusts the frequency of one or more masks 90 in another higher frequency band and is substantially similar in size to the quarter wavelength of another higher frequency band. Size 205 adjusts the bandwidth of the response. Dimensions 210, 215, 220, and 225 Adjust the Efficiency of the Antenna Those skilled in the art will appreciate that the full dimensions of one or more of the masks 90 86582 -17- 1325237 and features affect the coupling coefficient between the mask and other radio components. Further, those skilled in the art will appreciate that if the shape of the mask changes substantially, the size < frequency depends on the character to change. The frequency band affected by the _ specific size is dependent on the wavelength. To optimize the radiation performance of a communication device, the size is adjusted in such a way as to cause a current distribution to reduce the manner in which the energy deposition of the communication device 1 is reduced. The lower energy deposition increases the efficiency of the antenna 45 and improves the radiation ERP. As shown in Figure 7J and in accordance with the present invention, or a plurality of masks 9 are provided with openings to accommodate the display 40 and the keypad combination 8〇. One or more masks 9〇 are constructed to provide an ohmic path around the opening thereby creating a path of -rf electro-fluid flow around the opening. The continuity of one or more masks 9 along the length of the face of the communication device 1 is necessary to provide this path to the RF current. Figures 10 through 15 illustrate various embodiments of the invention in accordance with one or more of the masks 9 of the present invention. Those skilled in the art will appreciate that other equivalent embodiments are also within the scope of the present invention. In the embodiment of the present invention shown in Figures 14 and 15, - or a plurality of masks 90 preferably comprise "the real f and the quarter - the wavelength of the electrical length is similar. In the range, the effect is a radiant energy guide & jit # due to the current induced in the _ or multiple masks 9 (), which produces a total field in the direction away from the user. The communication device (7) contains The current on the printed circuit board 25 is assumed to be strong at the upper and lower edges and (4) the high energy region is close to the antenna feed point 15 〇. When the communication device 1G is placed next to the user d# mode), the (five) amount region is projected onto the printed circuit. Around the center of the board... or a plurality of masks 90 are conductive elements placed on the printed circuit board Qiu 86582 1325237, extending adjacent to the center of the printed circuit board 25, and one side of which is substantially four-knife< The wavelength is similar. The step--the apex angle is placed close to the antenna feed point 1 50 to the tang; the p 丨丨 丄 』 于 于 到 到 到 到 到 到 到 到 到 到 到 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 。 。 最大 最大 最大10 is shown. In this implementation, an effective mask can be constructed from a minimum amount of material. The display (10) and the peripheral area, such as the display outer ring 60 and the display lens 7 图 shown in Fig. 1, can also be substantially covered by the present invention or by a plurality of masks 9(). The conductive layer _ and the plurality of masks 9 and the dielectric layer 110 preferably include features designed to provide an optimum "ERp balance." The dielectric layer (10) may, for example, be a thin material having a conductivity close to 1 〇G Η/m to obtain a low intensity of radiant energy on the masked side of the communication device 10. Other bottom materials include high permeability and high dielectric constant substrates that can be used to improve the masking efficiency and are contemplated by the present invention. This mask further reduces energy deposition in this configuration. Correct selection of the conductivity, magnetic permeability and dielectric constant of the base material can significantly reduce energy deposition and cause only a slight degradation of ERp. In this way, the radiation efficiency of the L-device reaches a maximum ERp for an energy deposition level. If display 40 covers a substantial portion of the surface of communication device 10, it may be necessary to extend one or more masks 90 across the surface of display 4. In accordance with the present invention, display 40 of communication device 10 and its surrounding area may be treated by sputtering a metal to one or both of the display 4 and/or display lens 70 by a conductive transparent film, or by adding an intermediate conductive The component is masked. The mask of the display 40 is then in contact with - or a plurality of masks located in the front housing 2〇 and further insulated from the display outer ring 6〇 for best results. Contact can be achieved by surface-to-surface contact, a conductive gasket, a conductive adhesive, a conductive jumper 86582 •19- 1325237, a soldering procedure, any combination of the above, or an equivalent. For example, display lens 70 can be ultrasonically welded to front housing 2 to make electrical contact. When it is necessary to cover the display 40, a portion of the mask on the display area can be used, and the performance improvement is reduced. For example, a line, a wire 23 or a knife film as shown in Figure 16 can be used on display 40 or display lens to increase the transmission of light from one or more masks 90. Alternatively, the communication device 1A may include a removable device 'which covers the display 40. The movable element may comprise a conductive material joined to the outer casing plastic to form - or a plurality of mask %. Figure 4 (4) shows an alternative embodiment of the conductive elements across the display area. As shown, the conductive element can be implemented using a conductive outer casing designed to allow the front outer casing 2 to be continuously present behind the display 40 using any combination of the foregoing methods. Further, the portion of the front housing 20 that is located behind the display 40 is preferably insulated from the printed circuit board 25 by using one or more of the aforementioned impedance blocks. Figure is an illustration of an alternate embodiment of the mask display 40. As shown in Figure a, the display 40 can be masked using a display mask 235 that is designed to be electrically connected to the conductive housing, such as the front housing 2, and is located at π 益 40 < . This separation reveals that the mask 235 and the front outer casing 2 can be made electrically conductive by any combination of the methods previously described. The electrical connection between the display mask 235 and the conductive portion of the front outer casing 20 can be further achieved by any combination of the methods previously described. Referring again to FIG. 1, one or more of the masks 90 can also include a mask for the keypad assembly 80. The keypad combination 8 〇 preferably includes a 86582 -20- 1325237 keypad key 240' made of a conductive material and is designed to be in electrical contact with the conductive portion of the front housing 2〇. It will be understood by those skilled in the art - or a plurality of masks 9 can be made by using any combination of the foregoing methods or equivalents thereof. The present invention as described herein provides a system to reduce energy deposition and increase the ERP performance of the communication device, thereby improving the quality and scope of the communication device. While the invention has been described in terms of the preferred embodiments the embodiments of the invention Accordingly, all such modifications and changes are considered within the spirit and scope of the invention, as defined by the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS The present invention has been described by way of example embodiments, but not by way of limitation, the exemplary embodiments : Figure 1 illustrates a communication device. Figure 2 illustrates a cross-sectional view of a mask for use in the communication device in accordance with the present invention. Figure 3 illustrates a system for enhancing radiation performance for use in the communication device of Figure 1 in accordance with the present invention. Figure 4 illustrates the radiation frequency current distribution in the communication device of Figure 1 in accordance with the present invention. Figure 5 illustrates an electrostatic current path in the communication device of Figure 1 in accordance with a preferred embodiment of the present invention. Figures 6 and 7 illustrate the system of enhanced radiation performance of Figure 3, as embodied in various embodiments of the communication device of Figure 1. 86582 -21 - Mooncake embodiment, the mask is used in Figures 1 through 7 Figure 8 illustrates a communication device in accordance with the present invention. Figure 9 illustrates more details of the mask in accordance with the present invention in Figure 8. Figures 10 through 15 illustrate various alternative embodiments of the mask in accordance with the present invention in Figures 8 and 9. Figures 16 through 18 illustrate various alternative embodiments of the mask of Figure 8 and the masks of Figures 8 and 9, which are a portion of the display of the communication device of the present invention. . [Illustration of symbolic representation] 10 20 25 30 35 40 45 50 60 70 80 90 100 Communication device front housing printed circuit board rear housing battery display antenna speaker display outer ring display lens pocket keyboard assembly one or more masks conductive Layer dielectric layer 86582 110