TWI390861B - Wireless transceiver - Google Patents
Wireless transceiver Download PDFInfo
- Publication number
- TWI390861B TWI390861B TW98109068A TW98109068A TWI390861B TW I390861 B TWI390861 B TW I390861B TW 98109068 A TW98109068 A TW 98109068A TW 98109068 A TW98109068 A TW 98109068A TW I390861 B TWI390861 B TW I390861B
- Authority
- TW
- Taiwan
- Prior art keywords
- signal
- circuit
- wireless transceiver
- transmission line
- control signal
- Prior art date
Links
Landscapes
- Transceivers (AREA)
Description
本發明涉及一種無線通訊裝置，尤其涉及一種無線通訊裝置之無線收發器。The present invention relates to a wireless communication device, and more particularly to a wireless transceiver for a wireless communication device.
圖1為現有的無線收發器之架構圖。當無線收發器發送射頻訊號時，單刀雙擲開關60連接功率放大器50與濾波器70。此時，射頻訊號處理電路10用於發送射頻訊號，前置放大器20用於對射頻訊號進行前置放大，功率放大器50用於將前置放大之射頻訊號進一步放大，濾波器70用於將進一步放大之射頻訊號進行濾波，天線80用於將所濾波之射頻訊號發射出去。FIG. 1 is a structural diagram of a conventional wireless transceiver. When the wireless transceiver transmits an RF signal, the single pole double throw switch 60 is connected to the power amplifier 50 and the filter 70. At this time, the RF signal processing circuit 10 is used to transmit the RF signal, the preamplifier 20 is used to preamplify the RF signal, the power amplifier 50 is used to further amplify the preamplified RF signal, and the filter 70 is used to further The amplified RF signal is filtered, and the antenna 80 is used to transmit the filtered RF signal.
當無線收發器接收射頻訊號時，單刀雙擲開關60連接濾波器70與低雜訊放大器30。此時，天線80用於接收射頻訊號，濾波器70用於將所接收之射頻訊號進行濾波，低雜訊放大器30用於對所濾波之射頻訊號進行放大，射頻訊號處理電路10用於接收所放大之射頻訊號。When the wireless transceiver receives the RF signal, the single-pole double-throw switch 60 connects the filter 70 to the low noise amplifier 30. At this time, the antenna 80 is used to receive the RF signal, the filter 70 is used to filter the received RF signal, the low noise amplifier 30 is used to amplify the filtered RF signal, and the RF signal processing circuit 10 is used to receive the RF signal. Amplified RF signal.
在現有的無線收發器中，前置放大器20與低雜訊放大器30分別為兩組獨立的高頻放大電路。然，高頻放大電路所使用的零件多，所佔據的空間大，從而導致無線收發器的電路複雜，所佔據的空間大，且成本較高。In the existing wireless transceiver, the preamplifier 20 and the low noise amplifier 30 are two independent high frequency amplifying circuits. However, the high-frequency amplifying circuit uses many parts and occupies a large space, which results in a complicated circuit of the wireless transceiver, occupying a large space and a high cost.
有鑑於此，需要提供一種無線收發器，可精簡電路，減少所佔據的空間，且降低成本。In view of this, there is a need to provide a wireless transceiver that can streamline circuits, reduce the space occupied, and reduce costs.
一種無線收發器包括天線、濾波器、射頻訊號處理電路、公用放大器電路、第一開關電路、第二開關電路、發送功率放大器及單刀雙擲開關。天線用於收發射頻訊號。濾波器連接於天線，用於對射頻訊號進行濾波。射頻訊號處理電路用於處理射頻訊號，當無線收發器發送射頻訊號時輸出第一控制訊號，以及當無線收發器接收射頻訊號時輸出第二控制訊號。公用放大器電路之輸入端連接於射頻訊號處理電路之輸出端，其輸出端連接於射頻訊號處理電路之輸入端，用於當無線收發器發送射頻訊號時對射頻訊號進行前置放大，當無線收發器接收射頻訊號時，對射頻訊號進行放大。第一開關電路一端連接於公用放大器電路之輸出端，用於當從射頻訊號處理電路接收到第一控制訊號時導通，當未接收到第一控制訊號時斷開。第二開關電路一端連接於公用放大器電路之輸入端，用於當從射頻訊號處理電路接收到第二控制訊號時導通，當未接收到第二控制訊號時斷開。發送功率放大器之輸入端連接於第一開關電路之另一端，用於當第一開關電路導通時對公用放大器電路所前置放大之射頻訊號進一步放大。單刀雙擲開關之公共端連接於濾波器，其第一擲位連接於發送功率放大器之輸出端，其第二擲位連接於第二開關電路之另一端，用於根據第一控制訊號連接其公共端與第一擲位以及根據第二控制訊號連接其公共端與第二擲位。A wireless transceiver includes an antenna, a filter, a radio frequency signal processing circuit, a common amplifier circuit, a first switching circuit, a second switching circuit, a transmission power amplifier, and a single pole double throw switch. The antenna is used to transmit and receive RF signals. A filter is coupled to the antenna for filtering the RF signal. The RF signal processing circuit is configured to process the RF signal, output the first control signal when the wireless transceiver transmits the RF signal, and output the second control signal when the wireless transceiver receives the RF signal. The input end of the common amplifier circuit is connected to the output end of the RF signal processing circuit, and the output end thereof is connected to the input end of the RF signal processing circuit, and is used for preamplifying the RF signal when the wireless transceiver transmits the RF signal, when the wireless transceiver When receiving the RF signal, the device amplifies the RF signal. One end of the first switch circuit is connected to the output end of the common amplifier circuit for turning on when the first control signal is received from the RF signal processing circuit, and is turned off when the first control signal is not received. The second switch circuit is connected at one end to the input end of the common amplifier circuit for turning on when the second control signal is received from the RF signal processing circuit, and is turned off when the second control signal is not received. The input end of the transmit power amplifier is connected to the other end of the first switch circuit for further amplifying the RF signal preamplified by the common amplifier circuit when the first switch circuit is turned on. The common end of the single-pole double-throw switch is connected to the filter, the first throwing position is connected to the output end of the transmitting power amplifier, and the second throwing position is connected to the other end of the second switching circuit for connecting the first control signal according to the first control signal. The common end is connected to the first throw position and the common end and the second throw position according to the second control signal.
藉由以下對具體實施方式詳細的描述並結合附圖，將可輕易的瞭解上述內容及此項發明之技術效果。The above and the technical effects of the invention can be easily understood from the following detailed description of the embodiments and the accompanying drawings.
圖2為本發明無線收發器一實施方式之架構圖。在本實施方式中，無線收發器可收發無線保真(Wireless Fidelity，WiFi)或全球微波互聯接入(Worldwide Interoperability for Microwave Access，WiMAX)等射頻訊號，相應的，可被應用於WiFi或WiMAX等無線通訊產品中。2 is a block diagram of an embodiment of a wireless transceiver of the present invention. In this embodiment, the wireless transceiver can transmit and receive wireless fidelity (WiFi) or global interoperability for microwave access (WiMAX) and other radio frequency signals, and correspondingly, can be applied to WiFi or WiMAX. In wireless communication products.
在本實施例中，無線收發器包括射頻訊號處理電路100、公用放大器電路200、第一開關電路300、第二開關電路400、發送功率放大器500、單刀雙擲開關600、濾波器700及天線800。其中，天線800用於收發射頻訊號。濾波器700連接於天線800，用於對射頻訊號進行濾波。單刀雙擲開關600包括公共端、第一擲位及第二擲位。In this embodiment, the wireless transceiver includes a radio frequency signal processing circuit 100, a common amplifier circuit 200, a first switch circuit 300, a second switch circuit 400, a transmit power amplifier 500, a single pole double throw switch 600, a filter 700, and an antenna 800. . The antenna 800 is used for transmitting and receiving radio frequency signals. The filter 700 is coupled to the antenna 800 for filtering the RF signal. The single pole double throw switch 600 includes a common end, a first throw position, and a second throw position.
射頻訊號處理電路100用於處理射頻訊號，當無線收發器發送射頻訊號時輸出第一控制訊號，以及當無線收發器接收射頻訊號時輸出第二控制訊號。在本實施例中，當無線收發器用於收發WiFi射頻訊號時，射頻訊號處理電路100可根據WiFi協定來確定何時發送射頻訊號以及何時接收射頻訊號，即確定何時輸出第一控制訊號以及何時輸出第二控制訊號。在其他實施例中，若無線收發器用於收發其他射頻訊號，相應的，射頻訊號處理電路100亦可根據其他通訊協定來確定何時發送射頻訊號以及何時接收射頻訊號。The RF signal processing circuit 100 is configured to process the RF signal, output the first control signal when the wireless transceiver transmits the RF signal, and output the second control signal when the wireless transceiver receives the RF signal. In this embodiment, when the wireless transceiver is used for transmitting and receiving the WiFi RF signal, the RF signal processing circuit 100 can determine when to send the RF signal and when to receive the RF signal according to the WiFi protocol, that is, when to output the first control signal and when to output the first Two control signals. In other embodiments, if the wireless transceiver is used to send and receive other RF signals, the RF signal processing circuit 100 can also determine when to transmit the RF signal and when to receive the RF signal according to other communication protocols.
公用放大器電路200之輸入端連接於射頻訊號處理電路100之輸出端，其輸出端連接於射頻訊號處理電路100之輸入端，用於當無線收發器發送射頻訊號時對射頻訊號進行前置放大，當無線收發器接收射頻訊號時，對射頻訊號進行放大。在本實施方式中，公用放大器電路200包括輸入匹配電路210、公用放大器220及輸出匹配電路230。The input end of the common amplifier circuit 200 is connected to the output end of the RF signal processing circuit 100, and the output end thereof is connected to the input end of the RF signal processing circuit 100, and is used for preamplifying the RF signal when the wireless transceiver transmits the RF signal. When the wireless transceiver receives the RF signal, it amplifies the RF signal. In the present embodiment, the common amplifier circuit 200 includes an input matching circuit 210, a common amplifier 220, and an output matching circuit 230.
輸入匹配電路210連接於射頻訊號處理電路100之輸出端，用於調節公用放大器電路200之輸入阻抗。輸出匹配電路230連接於射頻訊號處理電路100之輸入端，用於調節公用放大器電路200之輸出阻抗。The input matching circuit 210 is coupled to the output of the RF signal processing circuit 100 for regulating the input impedance of the common amplifier circuit 200. The output matching circuit 230 is coupled to the input of the RF signal processing circuit 100 for regulating the output impedance of the common amplifier circuit 200.
公用放大器220連接於輸入匹配電路210與輸出匹配電路230之間，用於當無線收發器發送射頻訊號時對射頻訊號進行前置放大，當無線收發器接收射頻訊號時，對射頻訊號進行放大。在本實施例中，公用放大器220為低雜訊放大器。The common amplifier 220 is connected between the input matching circuit 210 and the output matching circuit 230 for preamplifying the RF signal when the wireless transceiver transmits the RF signal, and amplifying the RF signal when the wireless transceiver receives the RF signal. In this embodiment, the common amplifier 220 is a low noise amplifier.
其中，輸入匹配電路210與輸出匹配電路230藉由調節公用放大器電路200之輸入阻抗與輸出阻抗可使公用放大器220達到最大的功率輸出。The input matching circuit 210 and the output matching circuit 230 can achieve the maximum power output of the common amplifier 220 by adjusting the input impedance and the output impedance of the common amplifier circuit 200.
第一開關電路300一端連接於公用放大器電路200之輸出端，用於當接收到射頻訊號處理電路100所輸出之第一控制訊號時導通，當未接收到第一控制訊號時斷開。在本實施例中，第一開關電路300包括第一傳輸線310、第一二極體D1及第二傳輸線320。The first switch circuit 300 is connected to the output end of the common amplifier circuit 200 for turning on when the first control signal outputted by the RF signal processing circuit 100 is received, and is turned off when the first control signal is not received. In the embodiment, the first switch circuit 300 includes a first transmission line 310, a first diode D1, and a second transmission line 320.
第一傳輸線310一端用於接收射頻訊號處理電路100所輸出之第一控制訊號。第一二極體D1之陽極連接於第一傳輸線310之另一端與發送功率放大器500之輸入端，其陰極連接於公用放大器電路200之輸出端，用於當接收到第一控制訊號時導通，當未接收到第一控制訊號時截止。第二傳輸線320連接於第一二極體D1之陰極與地之間。One end of the first transmission line 310 is configured to receive the first control signal output by the RF signal processing circuit 100. The anode of the first diode D1 is connected to the other end of the first transmission line 310 and the input end of the transmission power amplifier 500, and the cathode thereof is connected to the output end of the common amplifier circuit 200 for being turned on when receiving the first control signal. It is turned off when the first control signal is not received. The second transmission line 320 is connected between the cathode of the first diode D1 and the ground.
在本實施例中，第一傳輸線310與第二傳輸線320皆為微帶線，其長度皆為無線收發器所發送之射頻訊號之四分之一波長。藉由第一傳輸線310與第二傳輸線320，第一控制訊號相對於地之間短路，從而可驅動第一二極體D1導通。例如，第一控制訊號可為3V電壓訊號，其大於第一二極體D1之開啟電壓0.7V。In this embodiment, the first transmission line 310 and the second transmission line 320 are both microstrip lines, and the lengths thereof are all a quarter wavelength of the radio frequency signal transmitted by the wireless transceiver. The first control signal is short-circuited with respect to ground by the first transmission line 310 and the second transmission line 320, so that the first diode D1 can be driven to be turned on. For example, the first control signal can be a 3V voltage signal that is greater than the turn-on voltage of the first diode D1 by 0.7V.
藉由第一傳輸線310與第二傳輸線320，無線收發器所發送之射頻訊號相對於電源及地之間開路，從而可防止所發送之射頻訊號洩漏到電源及地。With the first transmission line 310 and the second transmission line 320, the RF signal transmitted by the wireless transceiver is opened between the power source and the ground, thereby preventing the transmitted RF signal from leaking to the power source and the ground.
第二開關電路400一端連接於公用放大器電路200之輸入端，用於當接收到射頻訊號處理電路100所輸出之第二控制訊號時導通，當未接收到第二控制訊號時斷開。在本實施例中，第二開關電路400包括第三傳輸線410、第二二極體D2及第四傳輸線420。The second switch circuit 400 is connected to the input end of the common amplifier circuit 200 for turning on when the second control signal outputted by the RF signal processing circuit 100 is received, and is turned off when the second control signal is not received. In the embodiment, the second switch circuit 400 includes a third transmission line 410, a second diode D2, and a fourth transmission line 420.
第三傳輸線410一端用於接收射頻訊號處理電路100所輸出之第二控制訊號。第二二極體D2之陽極連接於第三傳輸線410之另一端與單刀雙擲開關600之第二擲位，其陰極連接於公用放大器電路200之輸入端，用於當接收到第二控制訊號時導通，當未接收第二控制訊號時截止。第四傳輸線420連接於第二二極體D2之陰極與地之間。One end of the third transmission line 410 is configured to receive the second control signal output by the RF signal processing circuit 100. The anode of the second diode D2 is connected to the other end of the third transmission line 410 and the second throw of the single-pole double-throw switch 600, and the cathode thereof is connected to the input end of the common amplifier circuit 200 for receiving the second control signal. Turns on when the second control signal is not received. The fourth transmission line 420 is connected between the cathode of the second diode D2 and the ground.
在本實施例中，第三傳輸線410與第四傳輸線420皆為微帶線，其長度皆為無線收發器所接收之射頻訊號之四分之一波長。藉由第三傳輸線410與第四傳輸線420，第二控制訊號相對於地之間短路，從而可驅動第二二極體D2導通。例如，第二控制訊號可為3V電壓訊號，其大於第二二極體D2之開啟電壓0.7V。In this embodiment, the third transmission line 410 and the fourth transmission line 420 are both microstrip lines, and the lengths thereof are all a quarter wavelength of the radio frequency signal received by the wireless transceiver. By the third transmission line 410 and the fourth transmission line 420, the second control signal is short-circuited with respect to the ground, so that the second diode D2 can be driven to be turned on. For example, the second control signal can be a 3V voltage signal that is greater than the turn-on voltage of the second diode D2 by 0.7V.
藉由第三傳輸線410與第四傳輸線420，無線收發器所接收之射頻訊號相對於電源及地之間開路，從而可防止所接收之射頻訊號洩漏到電源及地。With the third transmission line 410 and the fourth transmission line 420, the RF signal received by the wireless transceiver is opened between the power source and the ground, thereby preventing the received RF signal from leaking to the power source and the ground.
發送功率放大器500之輸入端連接於第一開關電路300之另一端，其輸出端連接於單刀雙擲開關600之第一擲位，用於當第一開關電路300導通時對公用放大器電路200所前置放大之射頻訊號進一步放大。在本實施例中，當無線收發器發送射頻訊號時，公用放大器電路200先將射頻訊號前置放大到發送功率放大器500所能接受之輸入範圍，然後發送功率放大器500再將前置放大之射頻訊號進一步放大。其中，發送功率放大器500所能接受之最佳輸入範圍由其功率增益等性能參數來決定。The input end of the transmit power amplifier 500 is connected to the other end of the first switch circuit 300, and the output end thereof is connected to the first throw position of the single-pole double-throw switch 600 for the common amplifier circuit 200 when the first switch circuit 300 is turned on. The preamplified RF signal is further amplified. In this embodiment, when the wireless transceiver transmits the RF signal, the common amplifier circuit 200 first amplifies the RF signal to an input range acceptable to the transmission power amplifier 500, and then transmits the power amplifier 500 to the preamplified RF. The signal is further enlarged. The optimal input range that the transmit power amplifier 500 can accept is determined by performance parameters such as its power gain.
單刀雙擲開關600之公共端連接於濾波器700，其第一擲位連接於發送功率放大器500之輸出端，其第二擲位連接於第二開關電路400之另一端，用於根據第一控制訊號連接其公共端與第一擲位以及根據第二控制訊號連接其公共端與第二擲位，亦即：根據第一控制訊號連接濾波器700與發送功率放大器500以及根據第二控制訊號連接濾波器700與第二開關電路400。The common terminal of the single-pole double-throw switch 600 is connected to the filter 700, the first throwing position is connected to the output end of the transmitting power amplifier 500, and the second throwing position is connected to the other end of the second switching circuit 400 for The control signal is connected to the common terminal and the first throwing position, and the common terminal and the second throwing position are connected according to the second control signal, that is, the filter 700 and the transmitting power amplifier 500 are connected according to the first control signal, and according to the second control signal The filter 700 is connected to the second switching circuit 400.
圖3係本發明無線收發器發送射頻訊號一實施方式之示意圖。在本實施方式中，當無線收發器發送射頻訊號時，射頻訊號處理電路100發送第一控制訊號至第一開關電路300與單刀双擲開關600以使第一開關電路300導通，單刀雙擲開關600連接發送功率放大器500與濾波器700。第二開關電路400由於未接收到第二控制訊號而處於斷開狀態。此時，射頻訊號處理電路100先發送射頻訊號至公用放大器電路200，公用放大器電路200對射頻訊號進行前置放大。前置放大之射頻訊號經由第一開關電路300被傳送至發送功率放大器500，發送功率放大器500再將前置放大之射頻訊號進一步放大。進一步放大之射頻訊號經由單刀雙擲開關600被傳送至濾波器700，濾波器700再將該進一步放大之射頻訊號進行濾波。最後，天線800將所濾波之射頻訊號發射出去。3 is a schematic diagram of an embodiment of a wireless transceiver of the present invention for transmitting an RF signal. In this embodiment, when the wireless transceiver transmits the RF signal, the RF signal processing circuit 100 sends the first control signal to the first switch circuit 300 and the single-pole double-throw switch 600 to turn on the first switch circuit 300, and the single-pole double-throw switch 600 connects the transmit power amplifier 500 to the filter 700. The second switch circuit 400 is in an off state because the second control signal is not received. At this time, the RF signal processing circuit 100 first transmits an RF signal to the common amplifier circuit 200, and the common amplifier circuit 200 preamplifies the RF signal. The preamplified RF signal is transmitted to the transmit power amplifier 500 via the first switch circuit 300, and the transmit power amplifier 500 further amplifies the preamplified RF signal. The further amplified RF signal is transmitted to filter 700 via single pole double throw switch 600, which in turn filters the further amplified RF signal. Finally, antenna 800 transmits the filtered RF signal.
圖4係本發明無線收發器接收射頻訊號一實施方式之示意圖。在本實施方式中，當無線收發器接收射頻訊號時，射頻訊號處理電路100發送第二控制訊號至第二開關電路400與單刀双擲開關600以使第二開關電路400導通，單刀雙擲開關600連接濾波器700與第二開關電路400。第一開關電路300則由於未接收到第一控制訊號而處於斷開狀態。此時，天線800先接收射頻訊號，濾波器700再將所接收之射頻訊號進行濾波。所濾波之射頻訊號經由單刀雙擲開關600與第二開關電路400被傳送至公用放大器電路200，公用放大器電路200再將所濾波之射頻訊號進行放大。最後，射頻訊號處理電路100接收所放大之射頻訊號。4 is a schematic diagram of an embodiment of a wireless transceiver of the present invention for receiving an RF signal. In this embodiment, when the wireless transceiver receives the RF signal, the RF signal processing circuit 100 sends the second control signal to the second switch circuit 400 and the single-pole double-throw switch 600 to turn on the second switch circuit 400, and the single-pole double-throw switch 600 connects the filter 700 to the second switching circuit 400. The first switch circuit 300 is in an off state because the first control signal is not received. At this time, the antenna 800 first receives the RF signal, and the filter 700 filters the received RF signal. The filtered RF signal is transmitted to the common amplifier circuit 200 via the single-pole double-throw switch 600 and the second switch circuit 400, and the common amplifier circuit 200 amplifies the filtered RF signal. Finally, the RF signal processing circuit 100 receives the amplified RF signal.
因此，在本發明無線收發器中，發送端之前置放大器與接收端之低雜訊放大器可共用一組公用放大器電路200，從而減少了一組放大器電路所需要的零件，不僅精簡電路，減少所佔據的空間，且降低了無線收發器之成本。另，在第一開關電路300與第二開關電路400中，利用了第二傳輸線320與第四傳輸線420之四分之一波長特性來達到射頻訊號隔絕的目的(即防止射頻訊號洩漏到電源及地)，從而使電路設計簡單且容易實現。Therefore, in the wireless transceiver of the present invention, the low-noise amplifier of the transmitting end preamplifier and the receiving end can share a common amplifier circuit 200, thereby reducing the number of components required for a group of amplifier circuits, not only streamlining the circuit, but also reducing The space occupied and the cost of the wireless transceiver is reduced. In addition, in the first switch circuit 300 and the second switch circuit 400, the quarter-wavelength characteristic of the second transmission line 320 and the fourth transmission line 420 is utilized to achieve the purpose of RF signal isolation (ie, preventing RF signals from leaking to the power source and Ground), which makes the circuit design simple and easy to implement.
綜上所述，本發明符合發明專利要件，爰依法提出專利申請。惟，以上所述者僅為本發明之較佳實施例，舉凡熟悉本案技藝之人士，在爰依本案發明精神所作之等效修飾或變化，皆應包含於以下之申請專利範圍內。In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art of the present invention should be included in the following claims.
10、100．．．射頻訊號處理電路10,100. . . RF signal processing circuit
20．．．前置放大器20. . . Preamplifier
30．．．低雜訊放大器30. . . Low noise amplifier
50．．．功率放大器50. . . Power amplifier
60、600．．．單刀雙擲開關60,600. . . Single pole double throw switch
70、700．．．濾波器70, 700. . . filter
80、800．．．天線80,800. . . antenna
200．．．公用放大器電路200. . . Common amplifier circuit
210．．．輸入匹配電路210. . . Input matching circuit
220．．．公用放大器220. . . Common amplifier
230．．．輸出匹配電路230. . . Output matching circuit
300．．．第一開關電路300. . . First switching circuit
310．．．第一傳輸線310. . . First transmission line
320．．．第二傳輸線320. . . Second transmission line
400．．．第二開關電路400. . . Second switching circuit
410．．．第三傳輸線410. . . Third transmission line
420．．．第四傳輸線420. . . Fourth transmission line
500．．．發送功率放大器500. . . Transmit power amplifier
D1．．．第一二極體D1. . . First diode
D2．．．第二二極體D2. . . Second diode
圖1係現有的無線收發器之架構圖。Figure 1 is a block diagram of an existing wireless transceiver.
圖2係本發明無線收發器一實施方式之架構圖。2 is a block diagram of an embodiment of a wireless transceiver of the present invention.
圖3係本發明無線收發器發送射頻訊號一實施方式之示意圖。3 is a schematic diagram of an embodiment of a wireless transceiver of the present invention for transmitting an RF signal.
圖4係本發明無線收發器接收射頻訊號一實施方式之示意圖。4 is a schematic diagram of an embodiment of a wireless transceiver of the present invention for receiving an RF signal.
100．．．射頻訊號處理電路100. . . RF signal processing circuit
200．．．公用放大器電路200. . . Common amplifier circuit
210．．．輸入匹配電路210. . . Input matching circuit
220．．．公用放大器220. . . Common amplifier
230．．．輸出匹配電路230. . . Output matching circuit
300．．．第一開關電路300. . . First switching circuit
310．．．第一傳輸線310. . . First transmission line
320．．．第二傳輸線320. . . Second transmission line
400．．．第二開關電路400. . . Second switching circuit
410．．．第三傳輸線410. . . Third transmission line
420．．．第四傳輸線420. . . Fourth transmission line
500．．．發送功率放大器500. . . Transmit power amplifier
600．．．單刀雙擲開關600. . . Single pole double throw switch
700．．．濾波器700. . . filter
800．．．天線800. . . antenna
D1．．．第一二極體D1. . . First diode
D2．．．第二二極體D2. . . Second diode
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW98109068A TWI390861B (en) | 2009-03-20 | 2009-03-20 | Wireless transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW98109068A TWI390861B (en) | 2009-03-20 | 2009-03-20 | Wireless transceiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201036349A TW201036349A (en) | 2010-10-01 |
| TWI390861B true TWI390861B (en) | 2013-03-21 |
Family
ID=44856205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW98109068A TWI390861B (en) | 2009-03-20 | 2009-03-20 | Wireless transceiver |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI390861B (en) |
-
2009
- 2009-03-20 TW TW98109068A patent/TWI390861B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| TW201036349A (en) | 2010-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101841346B (en) | Wireless transceiver | |
| US9083289B2 (en) | Dual band amplifier | |
| CN101282110B (en) | Low-power consumption single-ended input difference output low-noise amplifier | |
| CN107994918B (en) | Single-pole double-throw switch for radio frequency receiving and transmitting switching | |
| KR101675342B1 (en) | Apparatus and method for power amplifying in portable terminal | |
| US10547345B2 (en) | Radio-frequency transceiver front-end circuit | |
| US20080207256A1 (en) | Concurrent impedance matching of a wireless transceiver | |
| CN103532497B (en) | A kind of ultra-wideband low-noise amplifier using inductance compensation technology | |
| CN110995310B (en) | Radio frequency front-end circuit and control method thereof | |
| CN102611472A (en) | Multiband wireless signal transceiver system | |
| CN111294000B (en) | Multifunctional power amplifier with reconfigurable matching network and radar system | |
| JP2009290411A (en) | Low-noise receiver | |
| US20160043858A1 (en) | Amplifier supporting multi mode and amplifying method thereof | |
| CN109525203B (en) | Intermediate frequency amplifier based on GaAs pHEMT process | |
| CN101908881B (en) | Directional coupler and radio-frequency power amplifier containing same | |
| US20230015927A1 (en) | Radio Frequency (RF) Amplifier Circuit for Antenna Systems having a Modal Antenna | |
| WO2018209876A1 (en) | Radio frequency amplification processing circuit and communication terminal | |
| US20130303091A1 (en) | Method and apparatus for transmitting and receiving high frequency | |
| US8970445B2 (en) | Radio device | |
| CN103716062A (en) | Radio-frequency circuit integrating low-noise amplifier, power amplifier, and antenna switch | |
| WO2023160431A1 (en) | Low-noise amplification circuit and radio-frequency front-end module | |
| TWI390861B (en) | Wireless transceiver | |
| WO2023088002A1 (en) | Substrate matching circuit, radio frequency power amplifier, and radio frequency chip | |
| CN104158504B (en) | A kind of wideband low noise amplifier | |
| US20110177789A1 (en) | Low noise amplifier and the uses thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |