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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Gheidi, H. Banai, A. |
| Copyright Year | 2008 |
| Description | Author affiliation: Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran (Gheidi, H.; Banai, A.) |
| Abstract | In this paper a new method for measuring phase noise of microwave oscillators based on delay line frequency discriminator is proposed. Elimination of phase shifter is the major advantage of this technique over the traditional delay line technique. By using this new technique, manual or electronic tuning of phase shifter to reach phase quadrature at the phase detector input ports is not needed anymore. A 90-degree hybrid is used in this technique and another path including a phase detector and LNA is added. Finally by using a dual channel FFT analyzer and performing some processing over the sampled data of the two channels, the phase noise of the oscillator will be extracted. A setup based on the proposed method was constructed and the phase noise of a 3 GHz phase locked oscillator was measured via three methods; the traditional delay line method, the phase shifter-less method and direct spectrum reading from spectrum analyzer. Comparison of the measured data of the three methods shows the validity of the proposed method. |
| Starting Page | 325 |
| Ending Page | 328 |
| File Size | 455682 |
| Page Count | 4 |
| File Format | |
| ISBN | 9782874870064 |
| DOI | 10.1109/EUMC.2008.4751454 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-10-27 |
| Publisher Place | Netherlands |
| Access Restriction | Subscribed |
| Rights Holder | EUROPEAN MICROWAVE ASSOCI |
| Subject Keyword | Delay lines Phase noise Microwave measurements Noise measurement Phase measurement Microwave theory and techniques Microwave oscillators Phase shifters Phase detection Detectors |
| Content Type | Text |
| Resource Type | Article |
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