A wideband subharmonically injection-locked frequency synthesizer for LMDS
Related Research Unit(s)
|Journal / Publication||Microwave and Optical Technology Letters|
|Publication status||Published - 5 Sep 2001|
|Link to Scopus||https://www.scopus.com/record/display.uri?eid=2-s2.0-0035812354&origin=recordpage|
A low-cost wideband subharmonically injection-locked frequency synthesizer for local multipoint distribution system (LMDS) down-converter applications is introduced in this letter. This synthesizer consists of a 2.0 GHz PLL synthesizer, and is a general-purpose bipolar transistor VCO at 5.8 GHz. The 5.8 GHz VCO is not only subharmonically injection locked by a 2.0 GHz PLL synthesizer, but also, the varactor diode's voltage is adaptively controlled by the 2.0 GHz PLL controlling voltage via a suitable converter at the same time. In this way, real-time wideband locking can be attained. When third subharmonically injection locked, the output power of the synthesizer is more than 7.5 dBm, with a bandwidth of more than 25%. At 5.8 GHz, the power is 8.5 dBm, and the phase noise is - 93 dBc / Hz at an offset frequency of 100 kHz. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett.
- Frequency synthesizer, LMDS, Microwave oscillator, Phase-locked loop, Subharmonically injection-locked oscillator
Microwave and Optical Technology Letters, Vol. 30, No. 5, 05.09.2001, p. 310-312.
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal
Xue, Q 2001, 'A wideband subharmonically injection-locked frequency synthesizer for LMDS', Microwave and Optical Technology Letters, vol. 30, no. 5, pp. 310-312. https://doi.org/10.1002/mop.1299
Xue Q. A wideband subharmonically injection-locked frequency synthesizer for LMDS. Microwave and Optical Technology Letters. 2001 Sep 5;30(5):310-312. https://doi.org/10.1002/mop.1299