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How to acquire the input frequency from an unlocked state A phase locked loop (PLL) by itself cannot become useful until it has acquired the applied signal's frequency. Often, a PLL will never reach frequency acquisition (capture) without explicit assistive circuits. Curiously, few books on PLLs treat the topic of frequency acquisition in any depth or detail. Frequency Acquisition Techniques for Phase Locked Loops offers a no-nonsense treatment that is equally useful for engineers, technicians, and managers. Since mathematical rigor for its own sake can degenerate into intellectual «rigor mortis,» the author introduces readers to the basics and delivers useful information with clear language and minimal mathematics. With most of the approaches having been developed through years of experience, this completely practical guide explores methods for achieving the locked state in a variety of conditions as it examines: Performance limitations of phase/frequency detector–based phase locked loops The quadricorrelator method for both continuous and sampled modes Sawtooth ramp-and-sample phase detector and how its waveform contains frequency error information that can be extracted The benefits of a self-sweeping, self-extinguishing topology Sweep methods using quadrature mixer-based lock detection The use of digital implementations versus analog Frequency Acquisition Techniques for Phase Locked Loops is an important resource for RF/microwave engineers, in particular, circuit designers; practicing electronics engineers involved in frequency synthesis, phase locked loops, carrier or clock recovery loops, radio-frequency integrated circuit design, and aerospace electronics; and managers wanting to understand the technology of phase locked loops and frequency acquisition assistance techniques or jitter attenuating loops. Errata can be found by visiting the Book Support Site at: http://booksupport.wiley.com

A MOTHER’S SECRETWhen she ran away from the juvenile home she was raised in, Cat Barker left more than an unstable childhood behind. She also left her first love, Jake Stone. The two had more in common than anyone understood, but neither knew how to trust.Now Cat needs help, and there’s only one person she can turn to—Jake, her daughter’s secret father. Though Cat can see the tender man she once cared for, she still fears love and marriage. Until a daunting challenge renews her faith—and teaches them all a lesson about trust.Return to Dry Creek: A small Montana town with a heart as big as heaven.

Daughter of a prominent nineteenth-century Maine shipbuilder, Cherish Winslow had a deep love for ships, the ocean–and her father's apprentice, Silas van der Zee. Once his childhood companion in Haven's End, Cherish wished Silas could see she was no longer a girl in pigtails but a woman in love.To Silas, Cherish was a beacon of light, illuminating his lonely life…yet he doubted a lowly apprentice could win the heart of such an elegant young lady. A stolen kiss brought a moment's hope…but he soon found himself tossed out on the street, with no job, no home, no chance of a future. In his darkest hour, Silas must find the strength to fight for his life–and for his beloved Cherish.