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    • 3. 发明申请
    • HIGH-FREQUENCY CIRCUIT, HIGH-FREQUENCY DEVICE, AND COMMUNICATIONS APPARATUS
    • 高频电路,高频设备和通信设备
    • US20110110452A1
    • 2011-05-12
    • US13001302
    • 2009-06-17
    • Keisuke FukamachiShigeru Kemmochi
    • Keisuke FukamachiShigeru Kemmochi
    • H04B7/02
    • H04B1/0057H01L24/73H01L2224/32225H01L2224/48227H01L2224/73265H01L2924/1461H01L2924/19105H01L2924/30107H01L2924/3011H01L2924/3025H01P1/20336H04B1/48H01L2924/00012H01L2924/00
    • A high-frequency circuit comprising first and second antenna terminals, a transmitting terminal and first and second receiving terminals for first and second communications systems, and first and second switch circuits each having a common terminal and at least first and second switching terminals; the first antenna terminal being connected to a common terminal of the first switch circuit, the transmitting terminal for the first communications system being connected to the first switching terminal of the first switch circuit, the second antenna terminal being connected to a common terminal of the second switch circuit, the transmitting terminal for the second communications system being connected to the first switching terminal of the second switch circuit, each first receiving terminal for the first and second communications systems being connected to the second switching terminal of the first switch circuit via a first receiving-side multiplexer circuit, each second receiving terminal for the first and second communications systems being connected to the second switching terminal of the second switch circuit via a second receiving-side multiplexer circuit.
    • 包括第一和第二天线端子的高频电路,用于第一和第二通信系统的发送终端和第一和第二接收终端,以及每个具有公共终端和至少第一和第二切换终端的第一和第二开关电路; 所述第一天线端子连接到所述第一开关电路的公共端子,所述第一通信系统的发送端子连接到所述第一开关电路的第一开关端子,所述第二天线端子连接到所述第二天线端子的公共端子 开关电路,第二通信系统的发送端连接到第二开关电路的第一开关端,用于第一和第二通信系统的每个第一接收端通过第一和第二通信系统连接到第一开关电路的第二开关端 接收侧多路复用器电路,用于第一和第二通信系统的每个第二接收终端经由第二接收侧多路复用器电路连接到第二开关电路的第二开关端子。
    • 5. 发明授权
    • High-frequency circuit and communications apparatus comprising same
    • 包括该高频电路和通信装置的高频电路和通信装置
    • US07705692B2
    • 2010-04-27
    • US11397602
    • 2006-04-05
    • Keisuke FukamachiShigeru Kemmochi
    • Keisuke FukamachiShigeru Kemmochi
    • H01P5/18
    • G01R21/10
    • A high-frequency circuit for use in a dual-band wireless communications apparatus selectively using first and second frequency bands, comprising a diplexer connected to the output of a power amplifier for sending either one of transmission signals in the first and second frequency bands to an antenna, a coupler having a primary line connected to a common end of the diplexer and a secondary line, a detector comprising a detection diode for detecting a transmission power of a high-frequency signal sent from the secondary line of the coupler, and a harmonics-suppressing circuit disposed between the secondary line of the coupler and the detection diode.
    • 一种用于选择性地使用第一和第二频带的双频带无线通信设备中的高频电路,包括连接到功率放大器的输出的双工器,用于将第一和第二频带中的任一个发送信号发送到 天线,具有连接到双工器的公共端的主线的耦合器和次级线,包括用于检测从耦合器的次级线发送的高频信号的发送功率的检测二极管的检测器,以及谐波 设置在耦合器的次级线路和检测二极管之间的抑制电路。
    • 7. 发明申请
    • Switch circuit and high-frequency composite part
    • 开关电路和高频复合部件
    • US20070105506A1
    • 2007-05-10
    • US11592218
    • 2006-11-03
    • Shigeru KemmochiMitsuhiro WatanabeKeisuke FukamachiHiroyuki Tai
    • Shigeru KemmochiMitsuhiro WatanabeKeisuke FukamachiHiroyuki Tai
    • H04B1/44
    • H04B1/005H01P1/15H04B1/406H04B1/44H04B1/48
    • A switch circuit for selectively switching connection of an antenna side circuit with a reception circuit and a transmission circuit of two communication systems one of which has a reception frequency band partially overlapped with a transmission frequency of the other. The switch circuit includes (a) a first switch unit for switching connection to the antenna side circuit with the transmission circuit side of the first and the second communication systems and the reception circuit side of the first and the second communication system and (b) a second switch unit connected between the first switch unit and the reception circuit of the first end and the second communication system for switching connection of the antenna side circuit with the reception circuit of the first and the second communication system. (c) The transmission circuit side of the first and the second communication system of the first switch unit is connected to a transmission circuit shared by the first and the second communication system. (d) When the transmission circuit of the first and the second communication system is connected to the antenna side circuit, the second switch unit cuts off the connection between the reception circuit of the first communication system and the first switch unit.
    • 一种用于选择性地切换天线侧电路与接收电路的连接的开关电路和两个通信系统的发送电路,其中一个具有与另一个的发送频率部分重叠的接收频带。 开关电路包括:(a)第一开关单元,用于利用第一和第二通信系统的发送电路侧和第一和第二通信系统的接收电路侧切换与天线侧电路的连接,以及(b) 连接在第一开关单元和第一端的接收电路之间的第二开关单元和用于切换天线侧电路与第一和第二通信系统的接收电路的连接的第二通信系统。 (c)第一开关单元的第一和第二通信系统的发送电路侧连接到由第一通信系统和第二通信系统共享的发送电路。 (d)当第一和第二通信系统的发送电路连接到天线侧电路时,第二开关单元切断第一通信系统的接收电路和第一开关单元之间的连接。
    • 8. 发明申请
    • Multi-band high-frequency circuit, multi-band high-frequency circuit component and multi-band communication apparatus using same
    • 多频段高频电路,多频段高频电路组件和使用该多频段电路的多频段通信装置
    • US20070075803A1
    • 2007-04-05
    • US10596372
    • 2004-12-13
    • Shigeru KemmochiKeisuke FukamachiKazuhiro HagiwaraMasayuki Uchida
    • Shigeru KemmochiKeisuke FukamachiKazuhiro HagiwaraMasayuki Uchida
    • H03H7/46
    • H04B1/0057
    • A multi-band high-frequency circuit for performing wireless communications among pluralities of communication systems having different communication frequencies, comprising a high-frequency switch circuit comprising switching elements for switching the connection of pluralities of multi-band antennas to transmitting circuits and receiving circuits; a first diplexer circuit disposed between the high-frequency switch circuit and transmitting circuits for branching a high-frequency signal into frequency bands of the communication systems; a second diplexer circuit disposed between the high-frequency switch circuit and receiving circuits for branching a high-frequency signal into frequency bands of the communication systems; the first and second diplexer circuits each comprising a lower-frequency filter circuit and a higher-frequency filter circuit, a bandpass filter circuit being used as the lower-frequency filter circuit in the second diplexer circuit, or disposed between the lower-frequency filter circuit in the second diplexer circuit and the receiving circuit, so that there is a bandpass filter between the second diplexer circuit and a lower-frequency receiving circuit; the high-frequency switch circuit comprising first to fourth ports, the first port being connected to a first multi-band antenna, the second port being connected to a second multi-band antenna, the third port being connected to the first diplexer circuit, and the fourth port being connected to the second diplexer circuit; and the switching elements being controlled in an ON or OFF state to select a multi-band antenna for performing wireless communications and to switch the connection of the selected multi-band antenna to the transmitting circuit or the receiving circuit.
    • 一种用于在具有不同通信频率的多个通信系统之间执行无线通信的多频段高频电路,包括:高频开关电路,包括用于将多个多频带天线的连接切换到发送电路和接收电路的开关元件; 设置在高频开关电路和发送电路之间的第一双工器电路,用于将高频信号分支成通信系统的频带; 设置在高频开关电路和接收电路之间的第二双工器电路,用于将高频信号分支成通信系统的频带; 第一和第二双工器电路各自包括低频滤波器电路和较高频率滤波器电路,带通滤波器电路被用作第二双工器电路中的低频滤波器电路,或者设置在低频滤波器电路 在第二双工器电路和接收电路中,使得在第二双工器电路和低频接收电路之间存在带通滤波器; 所述高频开关电路包括第一至第四端口,所述第一端口连接到第一多频带天线,所述第二端口连接到第二多频带天线,所述第三端口连接到所述第一双工器电路,以及 所述第四端口连接到所述第二双工器电路; 并且开关元件被控制在ON或OFF状态,以选择用于执行无线通信的多频带天线,并且将所选择的多频带天线的连接切换到发射电路或接收电路。
    • 9. 发明申请
    • High-frequency circuit and communications apparatus comprising same
    • 包括该高频电路和通信装置的高频电路和通信装置
    • US20060229035A1
    • 2006-10-12
    • US11397602
    • 2006-04-05
    • Keisuke FukamachiShigeru Kemmochi
    • Keisuke FukamachiShigeru Kemmochi
    • H04B1/04
    • G01R21/10
    • A high-frequency circuit for use in a dual-band wireless communications apparatus selectively using first and second frequency bands, comprising a diplexer connected to the output of a power amplifier for sending either one of transmission signals in the first and second frequency bands to an antenna, a coupler having a primary line connected to a common end of the diplexer and a secondary line, a detector comprising a detection diode for detecting a transmission power of a high-frequency signal sent from the secondary line of the coupler, and a harmonics-suppressing circuit disposed between the secondary line of the coupler and the detection diode.
    • 一种用于选择性地使用第一和第二频带的双频带无线通信设备中的高频电路,包括连接到功率放大器的输出的双工器,用于将第一和第二频带中的任一个发送信号发送到 天线,具有连接到双工器的公共端的主线的耦合器和次级线,包括用于检测从耦合器的次级线发送的高频信号的发送功率的检测二极管的检测器,以及谐波 设置在耦合器的次级线路和检测二极管之间的抑制电路。