本文關(guān)鍵詞：一種新型超短波寬帶校正時(shí)鐘源研制　出處：《電子科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 校正信號(hào)源 梳狀譜 脈沖波 倍頻器 鎖相環(huán)

【摘要】：通信技術(shù)的飛速發(fā)展,推動(dòng)了通信設(shè)備的快速更新?lián)Q代。多通道測(cè)向設(shè)備逐漸向小型化升級(jí),從而對(duì)其核心組成部件校正信號(hào)源提出了更高的要求。因此多功能的校正源研制愈發(fā)必要。本文主要設(shè)計(jì)制作了一款多功能的校正時(shí)鐘模塊,其核心本質(zhì)為頻率源。共有3路輸出信號(hào)。其一是600~1600 MHz的寬帶梳狀譜輸出,即時(shí)頻譜帶寬大于16 MHz,頻譜間隔為500 KHz,輸出功率覆蓋-30dBm~-90dBm。其二是600~1600MHz的脈沖信號(hào)源輸出,脈沖周期為100?s,脈沖寬度為3?s。第三是80 MHz的固定點(diǎn)頻信號(hào),相位噪聲達(dá)到-120dBc/Hz@10KHz。論文對(duì)階躍二極管方案和計(jì)數(shù)器方案進(jìn)行對(duì)比,選取了計(jì)數(shù)器方案制作梳狀譜;譜線寬度能夠精確控制。脈沖發(fā)生器則采用的典型的鎖相環(huán)加射頻開(kāi)關(guān)切換的方式實(shí)現(xiàn),切換時(shí)間由復(fù)雜可編程邏輯器件(CPLD)精確控制。80 MHz的高相噪頻率源則通過(guò)對(duì)比鎖相環(huán)方案和倍頻器方案,選擇了三極管參量倍頻的方式實(shí)現(xiàn)。最終設(shè)計(jì)并制作完成了具有工程實(shí)用價(jià)值的樣品。校正時(shí)鐘模塊的設(shè)計(jì)具有一些新的特點(diǎn),提出了有別于傳統(tǒng)校正源的梳狀譜校正方法。而且實(shí)現(xiàn)輸出信號(hào)的寬帶調(diào)整,應(yīng)用范圍大大拓寬。模塊也由單一功能向復(fù)合功能發(fā)展,實(shí)現(xiàn)多功能合一,節(jié)省了接收機(jī)寶貴的空間資源;此外數(shù)字可編程器件的引入也方便了系統(tǒng)日后的升級(jí);最后對(duì)校正源工程樣品進(jìn)行了詳細(xì)的測(cè)試,并對(duì)測(cè)試結(jié)果進(jìn)行了分析。針不足之處進(jìn)行了總結(jié),并提出了可以改進(jìn)的工作意見(jiàn)。
[Abstract]:The rapid development of communication technology has promoted the rapid upgrading of communication equipment. Multi-channel direction-finding equipment is gradually upgraded to miniaturization. Therefore, it is necessary to develop a multi-function correction source. A multi-function correction clock module is designed and manufactured in this paper. Its core nature is a frequency source. There are three output signals. One is the broad band comb spectrum output of 600 ~ 1 600 MHz. The real-time spectrum bandwidth is more than 16 MHz. The frequency spectrum interval is 500kHz, the output power coverage is -30dBmmg-90dBm. the second is the output of 600,600MHz pulse signal source, the pulse period is 100? S, the pulse width is 3? The third is the fixed point frequency signal of 80 MHz with phase noise of -120dBc / Hz@ 10kHz. This paper compares the step diode scheme with the counter scheme. The counter scheme is selected to make comb spectrum. The spectral line width can be controlled accurately. The pulse generator uses a typical phase-locked loop and RF switch switching mode. The switching time is precisely controlled by the complex programmable logic device (CPLD). The high phase noise frequency source of .80 MHz is compared with the phase locked loop scheme and the frequency multiplier scheme. The parametric frequency doubling method of Triode is chosen to realize. Finally, the sample with practical engineering value is designed and made. The design of calibration clock module has some new characteristics. Different from the traditional correction source, the comb spectrum correction method is proposed, and the wideband adjustment of the output signal is realized, and the application range is greatly broadened. The module is also developed from a single function to a composite function to realize the integration of multiple functions. The valuable space resources of the receiver are saved; In addition, the introduction of digital programmable devices also facilitates the upgrade of the system in the future; Finally, the calibration source engineering samples are tested in detail, and the test results are analyzed. The shortcomings of the needle are summarized, and some suggestions for improvement are put forward.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN78

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本文編號(hào)：1433164