The Si2494/39 solution includes a silicon DAA using Skyworks Solutions’ proprietary thirdgeneration DAA technology. This highly-integrated DAA can be programmed to meet worldwide PTT specifications for ac termination, dc termination, ringer impedance, and ringer threshold. In addition, the Si2494/39...
PURPOSE:To stably perform stereophonic demodulation by passing a subcarrier signal component receiving the influence of frequency fluctuation obtained by a PLL circuit through a PLL circuit with low responsiveness as a PLL in which a crystal oscillator is used as an oscillator. CONSTITUTION:Since a ...
FM传输系统及仿真学院:专业:姓名:指导老师:信息学院通信工程黎梓林学号:职称:160108104500刘爱民副教授中国·珠海二○二〇年五月北京理工大学珠海学院2020届本科生毕业设计诚信承诺书本人郑重承诺:本人承诺呈交的毕业设计《FM传输系统及仿真》是在指导教师的指导下,独立开展研究取得的成果,文中引用他人的观点和材料,均在...
Si2494-39 V.9 2 A N D V.3 4 I S O M O D E M ® W I T H G LO BAL D A A Features EEPROM interface Commercial or industrial temperature range DTMF detection/generation Si3000 Voice Codec Interface Hardware su...
It is well known in the art that frequency synthesizers play a key role in generation of such high quality signals. It is also well known that a frequency discriminator (or frequency comparator) is an integral part of frequency synthesizers. A general discussion of phase lock loop (PLL) based...
Whilst it is very useful to have an understanding of the broad principles of the generation of sidebands within an FM signal, it is sometimes necessary to determine the levels mathematically.The calculations are not nearly as simple as they are for amplitude modulated signals and they involve ...
Demodulation and decoding for frequency modulation (FM) receivers with radio data system (RDS) or radio broadcast data system (RBDS). An example of a method for processing a signal
A frequency shift keying (FSK) demodulator includes a band-pass filter, an auto-calibration loop, a phase comparator, and an analog-to-digital converter. The band-pass filter is use
(57)< Abstract > < Objective > As for this device, the voltage which is added to the voltage controlled oscillatorTo make precision high, the switching signal for accurate synchronous detectionThe PLL circuit for FM stereo demodulation which it can be generated is offeredru. < Constitution > ...
Click for automatic bibliography generation Assignee: U.S. Philips Corporation (New York, NY) Primary Class: 381/13 Other Classes: 329/326 International Classes: H03D1/22;H04B1/10;H04B1/16;H04B1/26;H04H20/88; (IPC1-7): H04H5/00 ...