200824273 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種雙工器電路裝置，特別是指一種 用於同轴多媒體聯盟（Multimedia over Coax Alliance， 5 MoCA)上且具有高隔離度的多工器電路裝置。 【先前技術】 多年以來，乙太網路電纜一直是數位家庭的主要接線 解決方案，利用它可以在家中各個房間之間傳送音頻、視 - 頻和數位資料，甚至連接整個住宅音頻系統到家庭自動化 10 和安全系統等一切設施。 然而乙太網路並不是最理想的選擇，因為在已建築好 的住宅中安裝乙太網路電纜，需要穿牆打洞破壞硬體結 構，此舉有時比建設新的房子更加困難，而且成本較高。 另外，乙太網路的電纜安裝要求專業安裝人員，一般水電 15 接線工人無法勝任。 因此，便有業者開始支持並創建數位家庭基礎設施的 % 新方式，它們主要是利用幾乎每個家庭中都存在的電路幹 線，即不管是新式建築還是老舊建築都有的電線和同軸電 纜線。根據所用電路幹線的不同，這種新式的數位家庭連 20 線技術分別被命名為HomePlug AV和MoCA，制訂和推廣 這兩種技術的組織分別是HomePlug Powerline Alliance(家 庭電力線聯網聯盟）和Multimedia over Coax Alliance(同軸 電纜多媒體聯盟）。 簡單地說，HomePlug AV可以利用普通的電纜，例如 5 200824273 電力公司的電力線，而電力線可能是一般家庭中最普遍的 線纜，只要使用這種電力線就可以在一般家庭中提供數位 頻寬，不需額外安裝乙太網路電纜。而M〇cA的技術基本 上與建立一個HomePlug網路相同，但線材卻是使用同軸 5 電纜，主要用於把多個高畫質的視頻從一個房間發送到另 一個房間。目前在家庭中要安裝M〇CA網路只需簡單地將 MoCA多工器（或稱適配器）與同軸電纜連接，即可在一根 • 同軸電纜上提供電話服務和電腦數據連網，同時它還提供 ' 足夠的頻寬，以滿足對視頻的資料流進行遠端控制的需 10 要。 參閱圖1，為目前用於MoCA之多工器1電路裝置示意 圖，該多工器1具有一輸入端INPUT、一第一高通濾波器 HPF1、一第一低通濾波器LPF1、一第二高通濾波器 HPF2、一第二低通濾波器LPF2，以及二輸出端OUTPUT。 15 其中該輸入端JNPUT與該二輸出端OUTPUT之阻抗為 # 75Ω，而該第一高通濾波器HPF1串聯該第一低通濾波器 LPF1，該第二高通濾波器HPF2串聯該第二低通濾波器 LPF2。 配合參閱圖2，為量測該多工器1所得之頻率嗓聲比 20 波形示意圖。由圖可知噪聲值dB波形線在0-3.0GHZ的範 圍中呈現上下起伏之態樣，以MoCA之規格主要要求在 1125MHz-1525MHz，以及 975 MHz -1025 MHz 這兩個頻段 中要求能有較佳的訊號隔離度。 詳查圖中975 MHz _1525MHz的波段，該噪聲範圍自 6 200824273 5 10 15 20 -35dB至-105dB，因此可以判定該多工器i之兩個輸出端 OUTPUT，其隔離度（Isolation)並不佳，主要是因為訊號自 輸入端INPUT進入該多工器1後，便一分為二同時進入該 第一高通濾波器HPF1與該第二高通濾波器hpf2，在兩個 高通濾波器HPF1、HPF2的相互作用下，訊號重疊現象可 謂嚴重，因而影響在同一根同軸電纜上提供電話服務和電 腦數據連網的訊號清晰度，不僅頻寬無法有效利用，甚至 影響視頻訊號及進行遠端控制之資料流。 【發明内容】 因此，本發明之目的，是在提供一種用於同軸多媒體 聯盟（MoCA)上，具有濾波補償而能有效阻絕雜訊之高隔離 度多工器電路裝置。 於是，本發明用於同軸多媒體聯盟（M〇CA)之高隔離度 多工器電路裝置，是設置於—輸人端及_輸出端之間，該 高隔離度多工器電路裝置包含一第一適配單元，及一第二 適配單元。 4第一適配單具有一第一高通濾波器，及一與該第 南通渡波H串聯之第—低通濾波器。該第二適配單元與 適配單元並聯，並具有—第二低通遽波器，及一與 :第二低通濾波器串聯之第二高通濾波器，其中，該第一 了通濾波态與该第二低通濾波器是較該第一低通濾波器 與該第二高通濾波器相對靠近該輸入端。 ⑴本發明之功效在於該第一、二適配單元靠近訊號輸入 碥之處’是以該第一高通濾波器及該第二低通濾波器配 7 200824273 合，而使通過該第一、二適配單元之訊號可有效分離，以 增加隔離度，有效改善訊號傳輸之品質，提供搭配使用之 設備的運行穩定性。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之較佳實施例的詳細說明中，將可清楚 的明白。 ίο 15 20 參閱圖3’為本發明用於同軸多媒體聯盟（M〇CA)之高 隔離度多工器電路裝置5的第一較佳實施例，該用於同軸 多媒體聯盟（MoCA)之高隔離度多工器電路裝置5是設置於 一輸入端3及一輸出端4之間，並包含有一第一適配單元 51，及一與該第一適配單元51並聯之第二適配單元52。 首先，在該較佳實施例進行詳細說明前要注意的是， 本段僅介紹上述電路間的連結關係與功效，至於電路元件 間的動作容後再述。 該第-適配單元51分別與該輸入端3及該輸出端4 電性連接，並具有一第一高通濾;皮器、Hm，及一與該第 -高通渡波器HPF1串聯之第_低通濾、波器LpFi。 該第二適配單元52與該第_適配單元”並聯，亦同 樣分別與該輸入端3及該輸出端4電性連接，並具有一第 一低通遽波裔LPF2，及一與該楚—把、各丄 /、通弟一低通濾波器LPF2串聯 之第二高通濾波器HPF2。1中，兮认 /、T 該輸入端3與該輸出端4 之阻抗值是介於70〜80歐姆之間 間本較佳實施例是以75Ω 為例來作說明。該第一高通濾波哭 又的HPF1與該第二低通濾 8 200824273 波器LPF2是相對接近該輸入端3，而該第一低通濾波器 LPF1及該第二高通濾波器HPF2則相對靠近該輸出端4。 藉由該第一、二適配單元51、52靠近訊號輸入端3 之處，該第一高通濾波器HPF1及該第二低通濾波器LPF2 5 配合，而使通過該第一、二適配單元51、52之訊號可有 效分離，以增加隔離度，有效改善訊號傳輸之品質，提供 搭配使用之電器設備的運行穩定性。 配合參閱圖4，為量測該較佳實施例所得之頻率噪聲 比波形示意圖。由圖中可見dB(S(2,3))之波形線即為該較 10 佳實施例之隔離度在0_3.0GHz的頻率範圍中之波形變 化。以同軸電纜多媒體聯盟（Multimedia over Coax Alliance，MoCA)之規格主要訴求在 U25MHZ-1525MHZ，以 及975 MHz -1025 MHz這兩個頻段中要求能有較佳的訊號 隔離度。 15 依據上述說明，本發明之用於同軸多媒體聯盟（MoCA) 之高隔離度多工器電路裝置5得以有效阻隔數據流及語音 流相互干擾的頻率雜訊。所以，在下文中請配合回顧圖2 並詳查圖4中自975 MHz至1525MHz的頻率波段，該噪 聲範圍dB值是自-35dB至_50dB之間，因此可以判定本發 20 明用於同軸多媒體聯盟（MoCA)之高隔離度多工器電路裝 置5其隔離效果優於習知。 這肇因於訊號自輸入端3進入該高隔離度多工器電路 裝置5後，便一分為二同時進入該第一高通濾波器HPF1 與該第二低通濾波器LPF2，在兩個高、低通濾波器HPF卜 9 200824273 LPF2的相互作用下，較高頻段之訊號大部分可自該第一適 配單兀51中導出，而較低頻段之訊號大部分可自該第二適 配單元52中導出，該第一、二適配單元51、52之間訊號 重疊現象大幅降低，噪音波動範圍只有15dB，因此可降低 在同根同軸電纜上提供電話服務和電腦數據連網的訊 號雜訊，頻寬得以有效利用，且不影響視頻訊號及進行遠 端控制之資料流的清晰度。 歸納上述，本發明之用於同軸多媒體聯盟（m〇ca)之高 隔離度多工器電路裝置5，藉由前揭技術特徵，不僅不影 響不同輸出㈤4之間的訊號清晰度，豸能有*阻絕雜訊干 擾情況，且亦以高低通濾波器的方式切換該複數電話機34 亚掛時之通話品f，來改善當該複數電話貞34未使用時 之ADSL傳輸品質，並能有效降低該磁簧開關κι切換誤 動作之機率，故確實能達到本發明之目的。 、、 惟以上所述者，僅為本發明之較佳實施例而已，當不 :以此限疋本發明實施之範圍’即大凡依本發明申請專利 範圍及發明說明書内容所作之簡單的等效變化與修飾，皆 應仍屬本發明專利涵蓋之範圍内。 10 200824273 【圖式簡單說明】 圖1是一習知多工突$ a w 'I為、電路架構圖； 圖2是圖1中，息、， 里蜊該多工器所得之頻率噪聲比波形 示意圖； 圖3是本發明用於同轴多媒體聯盟（MoCA)之高隔離度 多工器電路裝置之較佳實施例的電路示意圖；及 圖4是圖3中，量測該較佳實施例所得之頻率噪聲比 波形不意圖。 200824273 【圖式之主要元件代表符號說明】 3輸入端 52··* 4輸出端 HPF1* 5…* 高隔離度多工器 LPF1 ♦ 電路裝置 HPF2 * 51…· 第一適配單元 LPF2 · 第二適配單元 第一高通濾波器 第一低通濾波器 第二高通濾波器 第二低通濾波器 12200824273 IX. Description of the Invention: Technical Field of the Invention The present invention relates to a duplexer circuit device, and more particularly to a Multimedia over Coax Alliance (5 MoCA) with high isolation. Multiplexer circuit device. [Prior Art] For many years, Ethernet cable has been the primary wiring solution for digital homes, allowing it to transfer audio, video-frequency and digital data between rooms in the home, and even connecting the entire residential audio system to home automation. 10 and security system and other facilities. However, Ethernet is not the best choice because installing an Ethernet cable in a built home requires wall-to-wall to break the hardware structure, which is sometimes more difficult than building a new house. higher cost. In addition, Ethernet cable installation requires professional installers, and general hydropower 15 wiring workers are not competent. As a result, there are new ways in which operators are beginning to support and create digital home infrastructure. They use circuit trunks that exist in almost every home, that is, wires and coaxial cables that are both new and old. . Depending on the circuit trunk used, the new digital home 20-line technology is named HomePlug AV and MoCA, respectively. The organizations that develop and promote these two technologies are HomePlug Powerline Alliance and Multimedia over Coax. Alliance (Coaxial Cable Multimedia Alliance). Simply put, HomePlug AV can use ordinary cables, such as the power line of the 200824273 power company, which may be the most common cable in the average family. As long as you use this power line, you can provide digital bandwidth in the average home. An additional Ethernet cable is required. The technology of M〇cA is basically the same as the establishment of a HomePlug network, but the wire is a coaxial 5 cable, which is mainly used to send multiple high-quality videos from one room to another. To install the M〇CA network in the home, simply connect the MoCA multiplexer (or adapter) to the coaxial cable to provide telephone service and computer data networking on a • coaxial cable. It also provides 'sufficient bandwidth to meet the needs of remote control of the video's data stream. Referring to FIG. 1 , it is a schematic diagram of a circuit device of a multiplexer 1 currently used for MoCA. The multiplexer 1 has an input terminal INPUT, a first high pass filter HPF1, a first low pass filter LPF1, and a second high pass. The filter HPF2, a second low pass filter LPF2, and two output terminals OUTPUT. 15 wherein the impedance of the input terminal JNPUT and the two output terminals OUTPUT is #75Ω, and the first high-pass filter HPF1 is connected in series with the first low-pass filter LPF1, and the second high-pass filter HPF2 is connected in series with the second low-pass filter LPF2. Referring to FIG. 2, a waveform diagram of the frequency hum of the multiplexer 1 is measured. It can be seen from the figure that the noise value dB waveform line exhibits up and down fluctuations in the range of 0-3.0 GHz, and the MoCA specification mainly requires that it be better in the two frequency bands of 1125 MHz-1525 MHz and 975 MHz -1025 MHz. Signal isolation. Looking at the 975 MHz _1525MHz band in the picture, the noise range is from 6 200824273 5 10 15 20 -35dB to -105dB, so it can be determined that the two outputs OUTPUT of the multiplexer i have poor isolation (Isolation). Mainly because the signal enters the multiplexer 1 from the input terminal INPUT, and then enters the first high-pass filter HPF1 and the second high-pass filter hpf2 at the same time, in the two high-pass filters HPF1, HPF2 Under the interaction, the signal overlap phenomenon can be said to be serious, thus affecting the signal clarity of providing telephone service and computer data connection on the same coaxial cable, not only the bandwidth cannot be effectively utilized, but also affects the video signal and the data flow for remote control. . SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a high isolation multiplexer circuit device for use in a Coaxial Multimedia Alliance (MoCA) with filtering compensation to effectively block noise. Therefore, the high isolation multiplexer circuit device for the coaxial multimedia alliance (M〇CA) is disposed between the input terminal and the _ output terminal, and the high isolation multiplexer circuit device includes a first An adapting unit and a second adapting unit. 4 The first adapter has a first high pass filter and a first low pass filter in series with the south pass wave H. The second adaptation unit is connected in parallel with the adaptation unit, and has a second low pass chopper, and a second high pass filter connected in series with the second low pass filter, wherein the first pass filter state And the second low pass filter is closer to the input end than the first low pass filter and the second high pass filter. (1) The effect of the present invention is that the first and second adapting units are close to the signal input port, and the first high-pass filter and the second low-pass filter are combined with each other, and the first and second passes. The signal of the adaptation unit can be effectively separated to increase the isolation, effectively improve the quality of the signal transmission, and provide operational stability of the equipment used in combination. The above and other technical contents, features, and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments. Ίο 15 20 Referring to FIG. 3 ′ is a first preferred embodiment of the high-isolation multiplexer circuit device 5 for a coaxial multimedia alliance (M〇CA), which is used for high isolation of the Coaxial Multimedia Alliance (MoCA). The multiplexer circuit device 5 is disposed between an input terminal 3 and an output terminal 4 and includes a first adapter unit 51 and a second adapter unit 52 connected in parallel with the first adapter unit 51. . First, before the detailed description of the preferred embodiment, it should be noted that this paragraph only introduces the connection relationship and efficiency between the above circuits, and the operation between the circuit elements will be described later. The first-adaptive unit 51 is electrically connected to the input terminal 3 and the output terminal 4, respectively, and has a first high-pass filter; a skin device, Hm, and a _ low in series with the first-high-pass wave-passer HPF1 Filter, waver LpFi. The second adapter unit 52 is connected in parallel with the first _ adaptation unit ”, and is also electrically connected to the input terminal 3 and the output terminal 4 respectively, and has a first low-pass 遽Powder LPF2, and a Chu-, 丄, / Tongdi, a low-pass filter LPF2 in series with the second high-pass filter HPF2. 1, 兮 / /, T the input 3 and the output 4 impedance value is between 70~ The preferred embodiment between the 80 ohms is illustrated by taking 75 ohms as an example. The first high pass filtered crying HPF1 and the second low pass filter 8 200824273 waver LPF2 are relatively close to the input terminal 3, and the The first low pass filter LPF1 and the second high pass filter HPF2 are relatively close to the output terminal 4. The first high pass filter is located near the signal input terminal 3 by the first and second adapting units 51, 52. The HPF1 and the second low-pass filter LPF2 5 cooperate to enable the signals passing through the first and second adapting units 51 and 52 to be effectively separated to increase the isolation, effectively improve the quality of the signal transmission, and provide an electrical appliance for use. Operational stability of the device. Referring to Figure 4, the frequency obtained by the preferred embodiment is measured. The noise ratio is a schematic diagram of the waveform. It can be seen from the figure that the waveform line of dB(S(2,3)) is the waveform variation of the isolation of the better embodiment in the frequency range of 0-3.0 GHz. The specifications of the Multimedia over Coax Alliance (MoCA) are mainly required to have better signal isolation in the U25MHZ-1525MHZ and 975 MHz -1025 MHz bands. 15 According to the above description, the present invention is for the coaxial multimedia alliance. The high-isolation multiplexer circuit device 5 of (MoCA) can effectively block the frequency noise of the data stream and the voice stream interfering with each other. Therefore, please refer back to Figure 2 and look at the frequency from 975 MHz to 1525 MHz in Figure 4 in detail. In the band, the noise range dB value is from -35 dB to _50 dB, so it can be judged that the high isolation multiplexer circuit device 5 for the Coaxial Multimedia Alliance (MoCA) has better isolation effect than the conventional one. This is because the signal enters the high-isolation multiplexer circuit device 5 from the input terminal 3, and then enters the first high-pass filter HPF1 and the second low-pass filter LPF2 at the same time. ,Lowpass Filter HPF 9 200824273 Under the interaction of LPF2, most of the signals of the higher frequency band can be derived from the first adaptation unit 51, and most of the signals of the lower frequency band can be from the second adaptation unit 52. The signal overlap between the first and second adapting units 51 and 52 is greatly reduced, and the noise fluctuation range is only 15 dB, so that the signal noise and the bandwidth of the telephone network and the computer data connection on the same coaxial cable can be reduced. It can be effectively utilized without affecting the clarity of the video signal and the data stream for remote control. In summary, the high isolation multiplexer circuit device 5 for the coaxial multimedia alliance (m〇ca) of the present invention not only does not affect the signal definition between the different outputs (5) 4, but also has the characteristics of the signal between the different outputs (5) 4 * Blocking the noise interference situation, and also switching the call product f of the plurality of telephones 34 in the manner of high and low pass filters to improve the ADSL transmission quality when the plurality of telephones 34 are not in use, and can effectively reduce the The reed switch κι switches the probability of malfunction, so it can achieve the object of the present invention. The above is only the preferred embodiment of the present invention, and is not limited to the scope of the present invention, that is, the simple equivalent of the scope of the invention and the contents of the invention. Changes and modifications are still within the scope of the invention. 10 200824273 [Simple description of the diagram] FIG. 1 is a schematic diagram of a conventional multiplexed operation $ aw 'I and a circuit structure diagram; FIG. 2 is a schematic diagram of a frequency-to-noise ratio waveform obtained by the multiplexer in FIG. 3 is a circuit diagram of a preferred embodiment of a high isolation multiplexer circuit device for a coaxial multimedia alliance (MoCA) of the present invention; and FIG. 4 is a frequency measurement of the preferred embodiment of FIG. The noise ratio is not intended. 200824273 [Description of main components of the diagram] 3 input terminal 52··* 4 output terminal HPF1* 5...* High isolation multiplexer LPF1 ♦ Circuit device HPF2 * 51...· First adapter unit LPF2 · Second Adapter unit first high pass filter first low pass filter second high pass filter second low pass filter 12