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Examine

  • Essentials+of+Radio+Wave+Propagation

    The objective of this book is to allow the reader to predict the received signal power produced by a particular radio transmitter. The first two chapters Examine propagation in free space for point-to-point and point-to-area transmission, respectively. This is combined with a dis- cussion regarding the characteristics of antennas for various purposes. In chapter 3, the effect of obstacles, whether buildings or mountains, is discussed and analytical methods, whereby the strength of a signal is the shadow of an obstacle can be predicted, are presented. 

    標(biāo)簽: Propagation Essentials Radio Wave of

    上傳時(shí)間: 2020-05-27

    上傳用戶:shancjb

  • spi協(xié)議英文詳解

    In this presentation, we will look at what the Serial Peripheral Interface, otherwise known as the SPI, is. and how it is used to communicate data to and from the PICmicro microcontroller.SPl is frequently used when few 1/O lines are available, but communication between two or more devices must be fast and easy to implement.In this presentation, we will discuss the following topics: We will first cover an Overview of SPI This section of the tutorial will introduce you to SPI and its concepts.Next, we will Examine the use of SPI on the PICmicro MCU.The details of how SPI is implemented on a PICmicro device will be Examined.Then, a Code Walkthrough will be given.The walkthough will explore code for both an SPI Master and SPI Slave. The example will have the Master generate data for sending to the slave.Finally, there will be a few resources given at the end of the presentation. These resources will allow you to explore in more detail the SPI interface

    標(biāo)簽: spi協(xié)議

    上傳時(shí)間: 2022-06-20

    上傳用戶:

  • 學(xué)習(xí)用PSPICE設(shè)計(jì)模電實(shí)驗(yàn)

    1.創(chuàng)建一個(gè)新項(xiàng)目:激活Design Manager,在菜單File中選擇New Workspace,然后填入項(xiàng)目名稱expl。2.輸入網(wǎng)單文件:在Tools菜單中選擇TextEdit,輸入如下所示的網(wǎng)單文件。3.保存文件:將文件命名為expl.cir。4.對(duì)電路進(jìn)行模擬:在Tools菜單中選擇PspiceA/D,再在PspiceA/D的File菜單中選擇Open,打開(kāi)已保存過(guò)的輸入文件expl.cir。5.檢查出錯(cuò):如果文件中出現(xiàn)了語(yǔ)法錯(cuò)誤,PspiceA/D就會(huì)彈出錯(cuò)誤提示框,并運(yùn)行Message Viewer,告訴用戶錯(cuò)誤信息。如果輸入文件沒(méi)有語(yǔ)法錯(cuò)誤,PspiceA/D就顯示正確模擬的對(duì)話框,如圖3-3類似,從圖中可讀出電路標(biāo)題、元器件個(gè)數(shù)以及計(jì)算中所耗內(nèi)存信息。6.查看輸出文件:在File菜單中選擇Examine 0utput,就可以通過(guò)Text Editor來(lái)瀏覽輸出文件。輸出文件中的各節(jié)點(diǎn)電壓如下所示。由此可得出如下所示的靜態(tài)工作點(diǎn)參數(shù):Vw=2.9646V,Vow=7.1878-2.1919=4.9959V,Tg=Va/R.=2.1919/2.3=0.953mA。7.觀察輸出波形:在PspiceA/D的File菜單中選擇Run Probe,或者在Design Manager 中選擇Tools下的Probe,都可以調(diào)出Probe。Probe自動(dòng)設(shè)置橫坐標(biāo),縱坐標(biāo)必須通過(guò)手動(dòng)添加。在菜單Trace中選擇Add,在Add Traces對(duì)話框的Trace Expression中輸入V(6)/V(1),測(cè)量放大倍數(shù)。8.在Probe中,單擊Plot菜單下的Add YAxis,增加一個(gè)新縱軸。9.單擊Trace菜單下的Add,在Trace Expression中輸入V(1)/I(V1),測(cè)量輸入電阻,輸出曲線如圖2-2所示。

    標(biāo)簽: pspice

    上傳時(shí)間: 2022-07-02

    上傳用戶:

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