Title :
Broadband PXI local oscillator modules with low phase noise and fast switching speed
Author :
Chenakin, Alexander ; Ojha, Suresh ; Nediyanchath, Shyam ; Bykhovsky, Vladimir ; McClellan, Steven ; Ngo, Hue
Author_Institution :
Phase Matrix, Inc., San Jose, CA, USA
Abstract :
This paper presents two local oscillator modules developed for PXI instrumentation. The modules are based on a novel, patented PLL design that combines fast switching speed, low phase noise, and low spurious characteristics. The modules cover 3-10 and 2-20 GHz frequency ranges respectively. The step size is 0.1 Hz for both modules. The measured phase noise at 10 kHz offset is about -121 dBc/Hz at 10 GHz and -115 dBc/Hz at 20 GHz respectively. The switching time is less than 500 microseconds to be within °50 kHz from the final frequency for any frequency step within the entire operating range. Spurs do not exceed the -70 dBc level. Both developed modules occupy two standard 3-U PXI slots and can be used in a variety of synthetic instruments based on the PXI platform.
Keywords :
field buses; oscillators; phase locked loops; PLL design; PXI instrumentation; broadband PXI local oscillator module; fast switching speed; frequency 3 GHz to 20 GHz; low phase noise; Frequency synthesizers; Phase locked loops; Phase noise; Synthesizers; Voltage-controlled oscillators; PXI module; frequency synthesizer; local oscillator; microwave source; phase noise; switching speed; synthetic instrument;
Conference_Titel :
AUTOTESTCON, 2011 IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-9362-3
DOI :
10.1109/AUTEST.2011.6058754
