公开(公告)号：US20080309415A1

公开(公告)日：2008-12-18

申请号：US12199871

申请日：2008-08-28

Applicant: Tomohide ARAMATA

Inventor： Tomohide ARAMATA

IPC: H03B5/12

CPC classification number: H03B5/1231 ,  H03B5/1203 ,  H03B5/1262 ,  H03B2200/0048 ,  H03B2201/0266

Abstract: In a high-frequency oscillator, a first resonance circuit and a second resonance circuit are respectively connected to a first amplifier circuit and a second amplifier circuit. A selection circuit includes a first switch circuit and a second switch circuit which selectively operate one of the first amplifier circuit and the second amplifier circuit. A grounded capacitor is connected to output sides of the first amplifier circuit and the second amplifier circuit. The grounded capacitor is commonly used by both the first amplifier circuit and the second amplifier circuit. An auxiliary grounded capacitor is connected between the first switch circuit and the first amplifier circuit. Accordingly, the grounded capacitor and the auxiliary grounded capacitor are connected to each other in parallel only when the first amplifier circuit is activated.

Abstract translation: 在高频振荡器中，第一谐振电路和第二谐振电路分别连接到第一放大器电路和第二放大器电路。 选择电路包括选择性地操作第一放大器电路和第二放大器电路之一的第一开关电路和第二开关电路。 接地电容器连接到第一放大器电路和第二放大器电路的输出侧。 接地电容器通常由第一放大器电路和第二放大器电路两者使用。 辅助接地电容器连接在第一开关电路和第一放大器电路之间。 因此，只有当第一放大器电路被激活时，接地电容器和辅助接地电容器彼此并联连接。

公开(公告)号：US20130051287A1

公开(公告)日：2013-02-28

申请号：US13584961

申请日：2012-08-14

Applicant: Tomohide ARAMATA ,  Hidemori AKAGI

Inventor： Tomohide ARAMATA ,  Hidemori AKAGI

IPC: H04B1/44 ,  H04L5/14

CPC classification number: H04L5/14 ,  H04B1/525

Abstract: An RF front-end module includes power amplifiers, transmission-side filters, a reception-side filter, and a switch IC. A first transmission signal is output from a first transmission signal input terminal to a first common terminal via the power amplifier and the transmission-side filter. A second transmission signal is output from a second transmission signal input terminal to a second common terminal via the power amplifier and the transmission-side filter. A first reception signal input from the first common terminal and a second reception signal input from the second common terminal are input via the switch IC to the reception-side filter, common to the first and second reception signals, and are output from the reception-side filter to a reception signal output terminal.

Abstract translation: RF前端模块包括功率放大器，发送侧滤波器，接收侧滤波器和开关IC。 第一发送信号经由功率放大器和发送侧滤波器从第一发送信号输入端子输出到第一公共端子。 第二发送信号经由功率放大器和发送侧滤波器从第二发送信号输入端子输出到第二公共端子。 从第一公共端子输入的第一接收信号和从第二公共端输入的第二接收信号经由开关IC输入到与第一和第二接收信号共同的接收侧滤波器，并从接收 - 侧滤​​波器到接收信号输出端子。