201123715 六、發明說明： 【發明所屬之技術領域】 [0001]本發明涉及一種節能電路’尤其涉及一種線镜調制解調 器節能電路。 【先前技術】 [0002] 〇 在電腦之使用過程中，往往需要藉由線纜數據機（cable modem)進行網路訪問，但係在用戶不使用網路之時候麩 據機中之上行功率放大器依然在工作，如此便會造成電 能之浪費。針對該問題’ -般採用冬方法係將數據機中 之功率放大器電源關閉’從而節省能源。然而，如果直 接關閉功率放大器’則會影響整個線纜數據機工作電路 之阻抗特性’以致於影響整個線纜數據機之射頻阻抗特 性。 【發明内容】 [0003] 有鑒於此，有必要提供一種可改善射頻阻抗特性之線雙 調制解調器節能電路。 〇 [0004] 一種線纜調制解調器節能電路’其包括一電源模組、— 開關電路，一監視模組、一雙工器。所述電源模組包括 一電源輸入端及一電源輸出端。所述電源輸入端連接在 外部電源上。所述電源輸出端經由所述開關電路連接至 一放大器。所述開關電路包括一P_M0S管，一第一電子開 關。所述P-M0S管之漏極連接至放大器之電源輪入蠕。P、 M0S管之源極連接至所述電源模組之電源輸出端》所述第 一電子開關包括一第一控制端、一第—開關端及一第二 開關端。所述第一開關端連接至所述1>~^05管之柵極，第 09 咖 75367-0 098144032 表單编號A0101 第5育/共15頁 201123715 -開關端接地。所述監視模組包括—監視訊號源，該監 視訊號源連接至第—電子開關之第一控制端，用於向所 述第-控制端輸出控制訊號。所述第一控制端用於根據 該監視矾號源輸出之控制訊號控制第一開關端及第二開 關細之間之導通。所述雙工器與一訊號收發電路相電連 接。所述線境調制解調器節能電路還包括一射頻匹配電 路。所述射頻匹配電路包括一第二電子開關及 一匹配器 件。所述第二電子開關包括一第二控制端、一第三開關 端及一第四開關端。所述第二控制端用於控制第三開關 端及第四開關端之間矣導# °所迷第；控制端連接在第 電子開關之第一開關端上》第二電子路關之第三開關 端與所述雙工器連接。第二電子開關之第四開關端連接 在匹配器件之一端，所述匹配器件之另一端接地。當所 述第一電子開關在所述監視訊號源輸出之控制訊號下導 通時，所述P-M〇s管導通、第二電子開關截止。從所述電 源模組經由所述P-MOS管供電堂所慧·夫讀。在所述監視 訊號源停止輸出控制訊號後。所述第一電子開關截止並 ：* …二...... 導致所述Ρ-MOS鲁.截jt及第一開關管導通。所述第二開關 管將所述雙工器從訊號收發電路接收之射頻訊號傳輸至 所述射頻匹配電路，由所述射頻匹配電路接收所述射頻 訊號。 [0005] 相對於現有技術，所述線規調制解調器節能電路在省電 模式（放大器停止工作）下’射頻匹配電路140導通，從 而改善省電模式下之射頻阻抗特性。 【實施方式】 098144032 表單編號A010! 第6頁/共I5頁 0982075367-0 201123715 [0006] [0007] [0008] Ο [0009] ❹ 098144032 下面將結合附圖與實施方式對本技術方案作進一步詳細 說明。 請參閲圖1，本發明較佳實施方式提供之一種線纜調制解 調器節能電路100。所述線纜調制解調器節能電路1〇〇包 括一電源模組110，一開關電路120，一監視模組130， 一射頻匹配電路14〇，一雙工器150。 所述電源模組110包括一電源輸入端112，一電源輸出端 114以及兩個並聯在電源輸入端112與電源輸出端114之 間之第一電容C1、第二電容c2。所逮電源輸入端112連接 在一+ 5v之外部電源（圖未示）上，所述電源輸出端114 藉由開關電路120連接在一放大器160上，用於為所述放 大器160供電。所述第一電容C1、第二電容C2之一端分別 連接電源輸出端114及電源輸入端112上，另一端均接地 〇 所述開關電路12〇包括一卜肋3管(5102、一第一電阻R1、 一第二電阻R2、一第三電阻R3、一第一電子開關Q101、201123715 VI. Description of the Invention: [Technical Field] [0001] The present invention relates to an energy saving circuit', and more particularly to a line mirror modem energy saving circuit. [Prior Art] [0002] 〇 In the use of the computer, it is often necessary to use a cable modem for network access, but the uplink power amplifier in the bristles when the user does not use the network. Still working, this will result in wastage of electrical energy. In response to this problem, the winter method is used to turn off the power amplifier power in the data unit to save energy. However, if the power amplifier is turned off directly, it will affect the impedance characteristics of the entire cable modem operating circuit so as to affect the RF impedance characteristics of the entire cable modem. SUMMARY OF THE INVENTION [0003] In view of the above, it is necessary to provide a line dual modem energy saving circuit that can improve radio frequency impedance characteristics. [0004] A cable modem energy saving circuit 'includes a power module, a switch circuit, a monitor module, and a duplexer. The power module includes a power input terminal and a power output terminal. The power input is connected to an external power source. The power supply output is coupled to an amplifier via the switching circuit. The switch circuit includes a P_MOS tube, a first electronic switch. The drain of the P-MOS transistor is connected to the power supply of the amplifier. The first electronic switch includes a first control terminal, a first switch terminal and a second switch terminal. The first electronic switch includes a first control terminal, a first switch terminal, and a second switch terminal. The first switch end is connected to the gate of the 1>~^05 tube, the 09th coffee 75367-0 098144032 Form No. A0101 5th/Total 15 Page 201123715 - The switch terminal is grounded. The monitoring module includes a monitoring signal source connected to the first control end of the first electronic switch for outputting a control signal to the first control terminal. The first control end is configured to control conduction between the first switch end and the second switch fine according to the control signal output by the monitoring source. The duplexer is electrically connected to a signal transmitting and receiving circuit. The line modem power saving circuit further includes a radio frequency matching circuit. The RF matching circuit includes a second electronic switch and a matching device. The second electronic switch includes a second control terminal, a third switch terminal, and a fourth switch terminal. The second control end is configured to control the first switch end between the third switch end and the fourth switch end; the control end is connected to the first switch end of the first electronic switch, and the third electronic circuit is closed to the third A switch end is connected to the duplexer. The fourth switch end of the second electronic switch is connected to one end of the matching device, and the other end of the matching device is grounded. When the first electronic switch is turned on under the control signal output by the monitoring signal source, the P-M〇s tube is turned on, and the second electronic switch is turned off. The power module is read from the power module via the P-MOS tube. After the monitoring signal source stops outputting the control signal. The first electronic switch is turned off and :* ... two ... causes the Ρ-MOS 鲁 截 jt and the first switch tube to be turned on. The second switch transmits the radio frequency signal received by the duplexer from the signal transceiver circuit to the radio frequency matching circuit, and the radio frequency matching circuit receives the radio frequency signal. [0005] Compared to the prior art, the wire gauge modem energy saving circuit is turned on in the power saving mode (the amplifier stops working), thereby improving the radio frequency impedance characteristics in the power saving mode. [Embodiment] 098144032 Form No. A010! Page 6/I5 page 0982075367-0 201123715 [0006] [0007] [0008] [0009] 098 098144032 The technical solution will be further described in detail below with reference to the accompanying drawings and embodiments. . Referring to FIG. 1, a cable modem energy saving circuit 100 according to a preferred embodiment of the present invention is provided. The cable modem energy-saving circuit 1 includes a power module 110, a switch circuit 120, a monitor module 130, a radio frequency matching circuit 14A, and a duplexer 150. The power module 110 includes a power input terminal 112, a power output terminal 114, and two first capacitors C1 and a second capacitor c2 connected in parallel between the power input terminal 112 and the power output terminal 114. The power input terminal 112 is connected to an external power supply (not shown) of +5v, and the power output terminal 114 is connected to an amplifier 160 by a switch circuit 120 for supplying power to the amplifier 160. One end of the first capacitor C1 and the second capacitor C2 are respectively connected to the power output end 114 and the power input end 112, and the other end is grounded. The switch circuit 12 includes a rib 3 tube (5102, a first resistor). R1, a second resistor R2, a third resistor R3, a first electronic switch Q101,
一第二電容C3、二第四電容C4及一第五電容C5。本實施 方式中’所述P-MOS管Qi〇2之源極S連接至電源輸出端 114 ’所述P-MOS管Ql〇2之漏極D連接至所述放大器160 之電源輸入端，所述P-MOS管Q102之柵極G經由第五電容 C5連接至所述電源輸出端114。所述第四電容C4連接在 P-MOS管Ql〇2之柵極6與地之間，所述第一電子開關Q101 包括一第一控制端及第一開關端及第二開關端，所述第 一控制端用於控制第一開關端及第二開關端之間之導通 與斷開。本實施方式中，所述第一電子開關q1〇1為一NPN 表單編號A0101 第7頁/共15頁 0982075367-0 201123715 型三極管，所述第一控制端為第一電子開關Q101之基極B ’第一開關端為第一電子開關Q101之集電極C，第二開關 端為第一電子開關Q1 01之發射極E。所述第一電阻R1連接 在電源輸出端114與第一電子開關Q 1〇1之基極B之間。所 述第二電阻R2連接在電源輸出端114與第一電子開關 Q101之集電極C »所述第一電子開關Q1 〇1之發射極E接地 。所述第三電容C3連接在第一電子開關Q101之基極B與地 之間。所述第一電子開關Q101之集電極C藉由第三電阻R3 連接至P-M0S管Q102之柵極G。 [0010] 所述監視模組130包括一監視訊號源I及一第六電阻R6。 所述監視訊號源I藉由該第六電阻R6連接至第一電子開關 Q101之基極B，用於向第一電子開關Q101輸出控制訊號 控制第一電子開關Q101之導通。 [0011] 所述射頻匹配電路140包括一第二電子開關Q103及一匹配 器件。本實施方式中，所述匹配器件為，厚配電阻R7。A second capacitor C3, a second capacitor C4 and a fifth capacitor C5. In the present embodiment, the source S of the P-MOS transistor Qi2 is connected to the power output terminal 114', and the drain D of the P-MOS transistor Q10 is connected to the power input terminal of the amplifier 160. The gate G of the P-MOS transistor Q102 is connected to the power output terminal 114 via a fifth capacitor C5. The fourth capacitor C4 is connected between the gate 6 of the P-MOS transistor Q1〇2 and the ground. The first electronic switch Q101 includes a first control terminal, a first switch terminal and a second switch terminal. The first control terminal is configured to control conduction and disconnection between the first switch end and the second switch end. In this embodiment, the first electronic switch q1〇1 is an NPN form number A0101 page 7 / 15 pages 0982075367-0 201123715 type transistor, the first control end is the base B of the first electronic switch Q101 'The first switch end is the collector C of the first electronic switch Q101, and the second switch end is the emitter E of the first electronic switch Q1 01. The first resistor R1 is connected between the power output terminal 114 and the base B of the first electronic switch Q 1〇1. The second resistor R2 is connected to the power supply output 114 and the collector C of the first electronic switch Q101. The emitter E of the first electronic switch Q1 〇1 is grounded. The third capacitor C3 is connected between the base B of the first electronic switch Q101 and the ground. The collector C of the first electronic switch Q101 is connected to the gate G of the P-MOS tube Q102 via a third resistor R3. [0010] The monitoring module 130 includes a monitoring signal source I and a sixth resistor R6. The monitoring signal source I is connected to the base B of the first electronic switch Q101 via the sixth resistor R6 for outputting a control signal to the first electronic switch Q101 to control the conduction of the first electronic switch Q101. [0011] The radio frequency matching circuit 140 includes a second electronic switch Q103 and a matching device. In this embodiment, the matching device is a thick resistor R7.
. - ....I 所述第二電子開關Q103包括一第二控制端及第三開關端 及第四開關端，所述第二控制_用於控制第三開關端及 第四開關端之間之導通。本實施方式中，所述第二電子 開關Q103為一NPN型三極管，所述第二控制端為第二電子 開關Q103之基極B ’第三開關端為第二電子開關Ql〇3之 集電極C，第四開關端為第二電子開關qi〇3之發射極E。 所述第二電子開關Q103為一NPN型三極管。第二電子開關 Q103之基極B連接在第一電子開關qi〇i之集電極C上，第 二電子開關Q103之集電極C與所述雙工器150連接’第二 電子開關Q103之發射極E連接在匹配電阻R7之一端。所述 098144032 表單編號A0101 第8頁/共15頁 0982075367-0 201123715 [0012] [0013] Ο [0014] Ο 叹配電阻R7之另一端接地。 可以理解之係，所述匹配器件也可為處理晶片等一些工 作時可輸出阻抗之電器件。 所述雙工器150用於將發射和接收訊號相隔離，保證接收 和發射都能同時正常工作，所述雙工器150與一訊號收發 電路170相電連接》本實施方式中，所述訊號收發電路 170包括一CATV (有線電視訊號）放大器，該CATV放大 器用於與電纜或光纖連接。可以理解之係，所述訊號收 發電路170也可為手機等_些用;於收養或接收無線訊號之 電路，並不限於本實施方式。 工作時’監視訊號源I輸出高電平之控制訊號，所述第一 電子開關Q101、p-MOS管Ql〇2均導通，系統電源藉由電 源輸出端114輸出工作電源至放大器16〇，為放大器16〇 提供工作電壓，而此時，第二電子開關Q1〇3截止，射頻 匹配電路140開路》當監視訊號源停止輸出高電平之控 制訊號時，所述第一電子開關Q1〇1、卜河⑽管“⑽均截 止’此時，放尖器160停止工作，進入省電模式。此時第 二電子開關Q103導通，從訊號收發電路17〇接收之射頻訊 號傳輸至所述雙工H15() ’再從所述雙工器⑽輸出至所 述射頻匹配電路14G，以透過所述射頻匹配電路14〇來接 收射頻Λ號’降低回波損耗，從而改善省電模式下之射 頻阻抗特性。 所述線㈣制解調器節能電路在省電模式（放大器停止 工作）下’射舰配電路14G料，從錢善省電模式下 098144032 表單編號Α0101 第9頁/共15頁 0982075367-0 [0015] 201123715 之射頻阻抗特性。 [0016] 綜上所述，本發明確已符合發明專利之要件，遂依法提 出專利申請。惟，以上所述者僅為本發明之較佳實施方 式，自不能以此限制本案之申請專利範圍。舉凡熟悉本 案技藝之人士援依本發明之精神所作之等效修飾或變化 ，皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 [0017] 圖1係本發明實施方式中提供之線纜調制解調器節能電路 之電路圖。 【主要元件符號說明】 [0018] 線纜調制解調器節能電路：100 [0019] 電源模組：110 [0020] 電源輸入端：112 [0021] 電源輸出端：114 [0022] 第一電容：C1 [0023] 第二電容：C2 [0024] 開關電路：1 2 0 [0025] P-MOS管：Q102 [0026] 第一電阻：R1 [0027] 第二電阻：R2 [0028] 第三電阻：R3 098144032 表單編號A0101 第10頁/共15頁 0982075367-0 201123715 [0029] 第一電子開關： Q101 [0030] 第三電容：C3 [0031] 第四電容：C4 [0032] 第五電容：C5 [0033] 監視模組：130 [0034] 監視訊號源：I [0035] 第六電阻：R6 [0036] 射頻匹配電路： 140 [0037] 第二電子開關： Q103 [0038] 匹配電阻：R7 [0039] 雙工器：150 [0040] 放大器：160 [0041] 訊號收發電路： 170 〇 098144032 表單編號Α0101 第11頁/共15頁 0982075367-0The second electronic switch Q103 includes a second control terminal, a third switch terminal, and a fourth switch terminal, and the second control_ is used to control the third switch terminal and the fourth switch terminal. Between the conduction. In this embodiment, the second electronic switch Q103 is an NPN type triode, and the second control end is a base B of the second electronic switch Q103. The third switch end is a collector of the second electronic switch Q1〇3. C. The fourth switch end is the emitter E of the second electronic switch qi〇3. The second electronic switch Q103 is an NPN type triode. The base B of the second electronic switch Q103 is connected to the collector C of the first electronic switch qi〇i, and the collector C of the second electronic switch Q103 is connected to the duplexer 150. The emitter of the second electronic switch Q103 E is connected to one end of the matching resistor R7. The 098144032 Form No. A0101 Page 8 of 15 0982075367-0 201123715 [0013] [0014] The other end of the slap resistor R7 is grounded. It can be understood that the matching device can also be an electrical device that can output impedance when processing some wafers and the like. The duplexer 150 is configured to isolate the transmit and receive signals to ensure that both the receive and the transmit are working normally. The duplexer 150 is electrically connected to the signal transceiver circuit 170. In this embodiment, the signal is The transceiver circuit 170 includes a CATV (cable television signal) amplifier for connection to a cable or fiber. It can be understood that the signal transmitting and receiving circuit 170 can also be used for a mobile phone or the like; the circuit for adopting or receiving the wireless signal is not limited to the embodiment. During operation, the monitor signal source I outputs a high level control signal, and the first electronic switch Q101 and the p-MOS transistor Q1〇2 are both turned on, and the system power supply outputs the working power to the amplifier 16〇 through the power output terminal 114. The amplifier 16 〇 provides an operating voltage, and at this time, the second electronic switch Q1 〇 3 is turned off, and the RF matching circuit 140 is open. The first electronic switch Q1 〇 1 when the monitoring signal source stops outputting the high level control signal. Buhe (10) tube "(10) is cut off" At this time, the sharpener 160 stops working and enters the power saving mode. At this time, the second electronic switch Q103 is turned on, and the RF signal received from the signal transmitting and receiving circuit 17 is transmitted to the duplex H15. () is further outputted from the duplexer (10) to the radio frequency matching circuit 14G to receive the radio frequency apostrophe 'reduced return loss through the radio frequency matching circuit 14', thereby improving the radio frequency impedance characteristic in the power saving mode The line (four) demodulator energy-saving circuit in the power-saving mode (amplifier stops working) 'shooting ship with circuit 14G material, from Qianshan power-saving mode 098144032 Form No. 1010101 Page 9 / Total 15 Page 0982075367-0[0015] The radio frequency impedance characteristic of 201123715. [0016] In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above is only a preferred embodiment of the present invention, The scope of the patent application is not limited in this respect. Any equivalent modifications or variations made by those skilled in the art to the spirit of the present invention should be included in the scope of the following patent application. [Simplified illustration] [0017] 1 is a circuit diagram of a cable modem energy-saving circuit provided in an embodiment of the present invention. [Main component symbol description] [0018] Cable modem energy-saving circuit: 100 [0019] Power module: 110 [0020] Power input terminal: 112 [ 0021] Power output: 114 [0022] First capacitor: C1 [0023] Second capacitor: C2 [0024] Switching circuit: 1 2 0 [0025] P-MOS transistor: Q102 [0026] First resistor: R1 [ 0027] Second resistor: R2 [0028] Third resistor: R3 098144032 Form number A0101 Page 10/15 page 0992075367-0 201123715 [0029] First electronic switch: Q101 [0030] Third capacitor: C3 [0031] Fourth capacitor :C4 [0032] Fifth capacitor: C5 [0033] Monitoring module: 130 [0034] Monitoring signal source: I [0035] Sixth resistor: R6 [0036] RF matching circuit: 140 [0037] Second electronic switch: Q103 [0038] Matching resistance: R7 [0039] Duplexer: 150 [0040] Amplifier: 160 [0041] Signal Transceiver: 170 〇098144032 Form No. 1010101 Page 11 of 15 0982075367-0