天线开关

From the left, TILT tips the antenna dish up or down with the angle read on the meter above the tilt switch.

左边，TILT开关是控制碟形天线的仰俯，从开关上方的仪表可知道天线的姿态。

From the left, TILT tips the antenna dish up or down with the angle read on the meter above the tilt switch. SCANNER controls

左边，TILT开关是控制碟形天线的仰俯，从开关上方的仪表可知道天线的姿态。

It also described the basic technology of the RF system's packaging and a System-In-Packagemodule of RF system with LNA, PPA, filter and antenna switch.

对高速数据处理和高密度封装技术的特点及对射频系统封装的特殊要求进行论述，介绍了射频系统封装的基本技术和一种包含LAN、PPA、滤波器、天线开关等的射频系统级封装组件。

Procedure is design of an antenna switch module with LTCC technology has been applied in GSM handset.

bstract：本论文使用LTCC技术研制应用於GSM手机之三频天线开关模组，不但可减少零件的使用数目，降低手机整体得重量与成本，还简化了手机的组装过程。

Example embodiments of the CMOS antenna switch may provide for 35 dBm P 1 dB at both bands (e.g., 900 MHz and 1.9 GHz and 2.1 GHz).

CMOS天线开关的示例性的实施例可以在两个频带(例如，900MHz和1.9GHz和2.1GHz)提供35dBm P1 dB。

The CMOS antenna switch may operate at a plurality of frequencies, perhaps around 900 MHz 1.9 GHz and 2.1 GHz according to an embodiment of the invention.

根据本发明的实施例，CMOS天线开关可以在大约900MHz、1.9GH、以及2.1GHz的多个频率下工作。

The system comprises first and second antennas for receiving first and second RF signals of first and second frequencies, respectively; a mobile switch for measuring performance characteristics of the second antenna; and a switch circuit connected between the second antenna and the mobile switch for controlling flow of the first RF signal to the second antenna.

在移动通信终端内，一开关电路，用于根据工作模式控制CDMA天线的输入阻抗，该开关电路被连接在CDMA天线和移动开关之间，以便在GPS工作模式下维持CDMA天线的输入阻抗为高阻抗，来切断GPS信号的流入，以及在CDMA工作模式下维持CDMA天线的输入阻抗为低阻抗以接收CDMA信号。

Key products include: chip capacitors, tantalum capacitors quality, temperature compensation crystal oscillator, the antenna switch modules, EMI filters, connectors, high resistance chip resistors, chip fuse, and so on.

主要产品包括：贴片电容、钽质电容、温度补偿晶体振荡器、天线开关模块、EMI滤波器、连接器、高阻值贴片电阻、贴片保险丝等等。

Mobile phone RF system consists mainly of transceivers, power amplifier and antenna switch. PA might be set in the Front-End-Module or FEM. In 2G, the cost of RF system was only about US $1.5, while In 3G, the cost was increased to between US$6.0 and US$8.0, and the cost will further increased to about US$8.0 to US$10.0 in 4G, obviously, FR system had the highest cost growth during the upgrading of mobile phones.

手机射频系统有三个主要零组件，收发器、功率放大器（Power Amplifier，下简称PA）和天线开关，有时PA包含在前端模块（Front-End-Module，简称FEM）。2G时代的射频系统只占大约1.5美元的成本，3G时代则占大约6-8美元的成本，4G时代则占大约8-10美元的成本，也是手机升级换代成本增加最多的部分。

Antenna switch is also has high entry barriers. Although its price is rather lower than PA and receiver, usually requiring SiP packaing and LTCC underlay. Globally, antenna switches are mainly supplied by Japanese vendors such as MURATA, Renesas and New JRC etc.

天线开关也是一个高门槛领域，虽然其价格远低于PA和收发器，通常要使用LTCC衬底和SiP封装，全球主要由日本厂家供应，有村田、瑞萨和新日本无线。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。