Title :
Low Phase Noise 92 GHz Phase-Locked Source for Passive Millimeter Wave Imaging System
Author :
Zhou, Cao ; Xiaohong, Tang ; Yu, Yan
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
This paper presents a low phase noise 92 GHz phase-locked source module with four output ports. This millimeter wave source is used as local oscillators (LO) in a passive millimeter wave imaging system. It achieves a -90.46 dBc/Hz (at 10 kHz offset 92 GHz carrier frequency) phase noise performance, the spur level is lower than -60 dBc. A well matched low insertion loss waveguide four-way power divider is designed, and its output power is more than 12 mW at each output port. In addition, analysis indicates that the wideband LO noise performance is critical in passive millimeter wave imaging systems. Therefore, a transmission type cylinder cavity is arranged before the power divider, which can effectively reduce the wide band noise of the millimeter wave source.
Keywords :
millimetre wave imaging; millimetre wave oscillators; power dividers; waveguides; cylinder cavity; four-way power divider; frequency 92 GHz; local oscillators; low insertion loss waveguide; low phase noise; millimeter wave source; passive millimeter wave imaging; phase-locked source; Frequency; Image analysis; Insertion loss; Local oscillators; Noise reduction; Performance analysis; Phase noise; Power dividers; Power generation; Wideband;
Conference_Titel :
Millimeter Waves, 2008. GSMM 2008. Global Symposium on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-1885-5
Electronic_ISBN :
978-1-4244-1886-2
DOI :
10.1109/GSMM.2008.4534666
