查询词典 antenna switch

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

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。

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。

A more detail research of antenna switch module has been described the system is consists of diplexer, RF switches, and low pass filters.

分频器提到它的设计方法， SPDT和SP3T两种射频开关电路主要指出了其传送回路插入损失的影响因素，而省略型式的滤波器的被选择是由於它的简易电路结构。

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。

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。

In this thesis, we utilize the bond wire for compensation on the input impedance matching of buried circuits. With proper design, the module has compact size, omni-directional radiation pattern, and low insertion loss of passive circuits. The proposed antenna switch module is suitable for applications of IEEE 802.11a WLAN.

本篇论文把此磅线的效应加以考虑并利用磅线近似电感的现象设计所有内埋的被动电路与天线，让此前端天线模组具有体积小、全向性辐射场型、以及被动电路特性良好之特色，频段适合於无线区域网路(IEEE 802.11a)的应用中。

Chapter 5 improves the antenna switch, phase-locked loop and frequency modulator circuits of the existing VHF FM transceiver so that the improved VHF FM transceiver can combine with the hardware composed of a high speed DSP chip TMS32010 and a single -chip microcomputer 8031 to become the TD-SFD digital radio set.

第五章对现有超短波单工电台的天线转换开关、锁相环、调频等电路进行了改造以使得改造后的电台配接TMS32010、8031组成的硬件系统成为数字时分同频双工电台。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐