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- microwave phase locked loops (PLL) 微波鎖相環(huán)（PLL）
- Resolution of Systematic Design Trouble with PLD Interior Phase Lock Loop. 使用PLD內部鎖相環(huán)解決系統設計難題。
- Abstract：The Phase Lock Loop (PLL) Circuits are widely used in electronic systems especially in receivers. 鎖相環(huán)路是在現代各種電子系統中，特別是在接收機中應用廣泛的一種基本電路。
- The coupling visibilities(CV) of temperature sensor heads were measured with phase lock loop technique. 采用鎖相環(huán)技術(shù)測試了各傳感器的分光可見(jiàn)度隨溫度的變化關(guān)系。
- The frequency and phase lock loop has been applied for the carrier recovery of VSB transmission system in high definition TV. 目前，鎖頻鎖相環(huán)在高清晰度電視VSB傳輸系統載波恢復中得到了應用。
- The signal processing circuses, including the low-noise pre-amplifier, the filter and the phase lock loop(PLL) demodulation were designed. 分析并研制了系統的信號調理電路，其中包括低噪聲前置放大、濾波、鎖相環(huán)解調。
- To meet the requirements of the target radio frequency (RF) hardware-in-the-loop simulation of the radio detonator, a method using a special phase lock loop (PLL) is presented. 摘要針對某型導彈無(wú)線(xiàn)電引信目標射頻半實(shí)物仿真的需要，提出了一種特殊的環(huán)路鎖相方法。
- To meet the requirements of the target radio frequency(RF) hardware-in-the-loop simulation of the radio detonator, a method using a special phase lock loop(PLL) is presented. 針對某型導彈無(wú)線(xiàn)電引信目標射頻半實(shí)物仿真的需要,提出了一種特殊的環(huán)路鎖相方法。
- One example is the phase comparator of a phase locked loop. 一個(gè)例子是相鎖環(huán)狀態(tài)下的相位比較器。
- The phase noise in microwave receiver and the measured parameter of source frequency instability are described in this paper, and the technology of frequency-synthesizing and theory of Phase Locked Loop (PLL) are also briefly introduced. 摘要闡述了微波接收機中的相位噪聲概念及本振源頻率不穩定度的實(shí)際測量參數，并簡(jiǎn)要介紹了頻率合成技術(shù)和鎖相環(huán)路工作原理。
- Through the research of direct digital synthesizer (DDS) used as a divider in phase lock loop (PLL), a frequency synthesizer with small frequency resolution ratio and high purity frequency spectrum can be realized. 摘要通過(guò)對直接數字合成器在鎖相環(huán)路中作為分頻器應用的研究，使頻率合成器可以在實(shí)現超細頻率分辨率的同時(shí)達到高的頻譜純度。
- The PLL (phase lock loop) is realized by form of charge pump, its loop filter is passive two-order LPF. Compared to other form of active filter, this CP PLL has less noise, which does some good to its output spectrum. 微波鎖相環(huán)采用電荷泵的形式,其環(huán)路濾波器為無(wú)源二階低通濾波器,相比采用有源濾波器的鎖相環(huán),它不會(huì )附加有源噪聲,而且濾波器結構簡(jiǎn)單,便于調試。
- PLL (phase lock loop) with PFD (phase-frequency detector) have been widely used in recent years.Reason for their popularity include extended tracking range, lower tracking time and low cost. 摘要鎖相環(huán)(PLL)是一個(gè)閉環(huán)相位自動(dòng)控制系統，能夠利用一個(gè)精確且穩定的頻率產(chǎn)生一系列頻率準確的信號，為系統內部的其它模塊提供穩定的高頻時(shí)鐘。
- In order to satisfy the flow measurement precision for big-pipe,multi-paths ultrasonic flow measurement system based FPGA(Field Programmable Gate Array) and phase lock loop(PLL) was developed. 為了滿(mǎn)足大管徑流量的測量精度,研制了基于現場(chǎng)可編程門(mén)陣列器件FPGA和鎖相環(huán)路的多聲路超聲波流量測量系統。
- Phase locked loop (PLL) has been widely used in communication system. 鎖相環(huán)路在通信系統中得到了廣泛的應用。
- The phase jitter of output signal of the PLL( phase locked loop) frequency doubler is analyzed. 定量分析了數字式鎖相倍頻器輸出信號的相位抖動(dòng).
- It also incluses a phase locking loop (PLL) simulation used for frequency tracking of CMF. 還包括用于頻率跟蹤的鎖相環(huán)仿真 ,鎖相環(huán)可以極好地平滑噪聲 ,跟蹤頻率變化 ,最終用于計算兩路信號相位差。
- Design of RF Modem Based on Double Phase Lock Loop 基于雙鎖相環(huán)路的RF調制解調器設計
- Accurate IP Behavioral Modeling of Phase Lock Loop 一種精確的鎖相環(huán)IP模塊行為級建模
