Title :
A frequency agile fast switching hybrid synthesizer for radar applications
Author :
Kashif, Muhammad ; Malik, Zahid Yaqoob ; Yasin, Mubashar ; Nawaz, Muhammad Imran
Author_Institution :
Centre for Wireless Commun., Nat. Eng. & Sci. Comm., Islamabad, Pakistan
Abstract :
Design and development of a frequency agile fast switching hybrid synthesizer in the X-band is described. Direct Digital Synthesizer (DDS) technology offers very fine (sub-hertz) frequency tuning and very fast frequency switching due to its digital structure. On the other hand DDS cannot produce frequencies higher than a few hundred megahertz. Conventional PLL circuits can operate at very high frequencies but they lack in fine frequency tuning and fast switching as compared to DDS. The purpose of this development is to combine the benefits of both the technologies into a single hybrid synthesizer.
Keywords :
direct digital synthesis; phase locked loops; radar; PLL circuits; X-band; digital structure; direct digital synthesizer technology; frequency agile fast switching hybrid synthesizer; radar applications; very fast frequency switching; very fine frequency tuning;
Conference_Titel :
Applied Sciences and Technology (IBCAST), 2009 6th International Bhurban Conference on
Conference_Location :
Islamabad
Print_ISBN :
978-1-4244-8650-2
Electronic_ISBN :
978-969-8741-07-5
