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http://dx.doi.org/10.5515/KJKIEES.2011.22.3.292

Voltage Controlled Injection-Locked Oscillator Design at 2.4 GHz Band for Wideband Applications  

Yoon, Won-Sang (Communication R&D Center, Samsung Thales)
Lee, Hun-Sung (Department of Radio Communication Engineering, Korea University)
Lee, Hee-Jong (Department of Information and Communication Engineering, Soonchunhyang University)
Pyo, Seong-Min (Department of Radio Communication Engineering, Korea University)
Kim, Young-Sik (Department of Radio Communication Engineering, Korea University)
Han, Sang-Min (Department of Information and Communication Engineering, Soonchunhyang University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.22, no.3, 2011 , pp. 292-298 More about this Journal
Abstract
In this paper, a voltage controlled injection-locked oscillator(VC-ILO) is proposed for wideband applications. From the control of the free-running frequency by a varactor diode, the wide frequency locking range can be obtained for low-level injected signals. The proposed VC-ILO is implemented on an FR-4 substrate with a thickness of 0.8 mm. The free-running frequencies of the oscillator is 2.39~2.52 GHz at the control voltage of 0~5 V. While the frequency locking range of over 50 MHz is presented for -10 dBm injected signal level at a fixed frequency, the locking range of over 90 MHz can be achieved for -30 dBm by controlling the free-running frequency.
Keywords
Injection-Locked Oscillators; Injection-Locking; Voltage-Controlled Oscillators; Varactor Diodes;
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