This invention discloses a duplexer and a multiplexer of the communication system and a method to realize them on a PCB circuit, which applies a 3db bridge and a low pass filter to constitute a hopstreet duplexer without waste band channels, in which, the signals are shunted and combined by the design of the circuit structure and power distribution of the 3-db bridge and phase offset function, the band filter of the low pass filter and the reflection function of a stopband to make up of a costless duplexer in theory to merge the two channels of different frequencies and reduce loss to increase volume and working bandwidth, then a multiplexer is formed by cascading multiple duplexers.

本發(fā)明涉及通信設(shè)備天天色天天操天天摸天天抽，公開了一種通信系統(tǒng)雙工器和多工器以及雙工多工方法黄片一级免费观看，使得雙工器和多工器能夠在PCB電路上實(shí)現(xiàn)，并且體積小黄色视频免费网上站、損耗小日韩综艺精品视频在线观看、成本低、容量大黄色在线操。本發(fā)明中caopeng视频在线，采用三分貝電橋、低通濾波器構(gòu)成無(wú)損耗頻帶信道合路的雙工器国产精品久久福利网站，其中通過電路結(jié)構(gòu)的設(shè)計(jì)并利用三分貝電橋的功率分配和相位偏移功能將各路信號(hào)進(jìn)行分路和組合亚洲Av片久久综合网，利用低通濾波器的頻帶濾波和阻帶反射功能聯(lián)合三分貝電橋構(gòu)造一個(gè)理論無(wú)耗的雙工器，使兩路不同頻率的信道合路在线视频草，降低的損耗久久久久久九九99精品伊人、提高容量和工作帶寬。通過多個(gè)上述雙工器的級(jí)聯(lián)構(gòu)成多工器欧美视频免费在线。

Duplexers These products have been widely used in the field of mobile communication.

雙工器 以上產(chǎn)品廣泛應(yīng)用于移動(dòng)通信領(lǐng)域日韩综合在线草草。

Design and simulation results show that these two kinds of 3 dB-couplers are consistent with general requirements of parameter indexes, and can be respectively suitable for narrowband and broadband in the adjacent-channel duplexers.

設(shè)計(jì)和仿真結(jié)果表明，這兩種結(jié)構(gòu)的三分貝耦合器符合一般的指標(biāo)要求黄色工厂网久久综合，分別適用于窄帶和寬帶的數(shù)字鄰頻雙工器中麻豆精品三级视频在线播放。

Can develop filters /duplexers or other functional modules independently.

能獨(dú)立開發(fā)濾波器雙工器及其他射頻前端模塊。

According to the requirements of 3 dB-coupler in adjacent-channel duplexers and the basic principles of 3 dB-coupler, a narrow band 3 dB-coupler is analyzed which can applied to digital TV field.

根據(jù)數(shù)字鄰頻雙工器中對(duì)三分貝耦合器的要求和三分貝耦合器的基本原理26uuu国产在线精品，對(duì)應(yīng)用于數(shù)字電視領(lǐng)域的一款窄帶三分貝耦合器進(jìn)行了分析精品久久久一级毛片。

This technology can be employed to create advanced frequency shaping components and devices including filters,duplexers,and resonators for oscillators.

薄膜體聲波諧振器采用一種先進(jìn)的諧振技術(shù)，它是通過壓電薄膜的逆壓電效應(yīng)將電能量轉(zhuǎn)換成聲波而形成諧振国产一本之道高清中文在线，這一諧振技術(shù)可以用來(lái)制作薄膜頻率整形器件等先進(jìn)元器件黄片最色软件在线观看入口。

For instance, it was apparent that new microwave pulse requirements were needed, bringing about the invention of the multi-cavity Magnetron, which in turn required new duplexers and receivers, which then made even higher-frequency magnetrons desirable round and round it went, to the benefit of all radar uses.

例如對(duì)微波雷達(dá)的需求導(dǎo)致了多腔磁控管的發(fā)明，而這又帶來(lái)了對(duì)收發(fā)雙工機(jī)與接收器的需要人人看人人干人人看，反過來(lái)又需求更高頻率的磁控管…就這樣轉(zhuǎn)來(lái)轉(zhuǎn)去韩国最新三级，雷達(dá)因此獲益良多。

Apparent that new microwave pulse requirements were needed, bringing about the invention of the multi-cavity Magnetron, whichin turn required new duplexers and receivers, which then made even higher-frequency magnetrons desirable round and round itwent, to the benefit of all radar uses.

例如對(duì)微波雷達(dá)的需求導(dǎo)致了多腔磁控管的發(fā)明亚洲一级黄色录像，而這又帶來(lái)了對(duì)收發(fā)雙工機(jī)與接收器的需要色色色.com，反過來(lái)又需求更高頻率的磁控管…就這樣轉(zhuǎn)來(lái)轉(zhuǎn)去，雷達(dá)因此獲益良多操操日小说。

Ltd, which was founded in 2002, designs and manufactures a series of passive devices, such as filters, duplexers, couplings and multi-frequency band mixers in communication frequency bands of DCS, GSM, CDMA and 3G.

南京震宇通信技術(shù)有限公司成立于2002年日本人妻黄色三级小视频，創(chuàng)業(yè)以來(lái)年轻人看的黄色视频人妻无码，公司先后在DCS、GSM国产人人搞人人舔、CDMAwww欧美com、3G通信頻段內(nèi)設(shè)計(jì)生產(chǎn)了一系列濾波器、雙工器自拍野战视频、耦合器谁有免费黄色网站?、多頻合路器等無(wú)源器件。

GaAs RF switch MMICs for cellular phone; GaAs RF power amplifier MMICs for cellular phone; GaAs RF switch MMICs for base station; GaAs RF attenuator MMICs for base station; RF module for base station; GaAs power amplifier MMICs for CATV; MOSFET power devices;SAW resonators; SAW filters; SAW duplexers; N type and P type 4＂-6＂silicon epitaxial wafers.

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