Title :
A balanced injection-locked, phase-locked loop array for spectrum analysis
Author :
Gathman, Timothy D. ; Buckwalter, James F.
Author_Institution :
Dept. of ECE, Univ. of California at San Diego, La Jolla, CA, USA
Abstract :
A balanced ILPLL array is demonstrated to provide an orthogonal basis to estimate the frequency and power of an unknown in-band signal. The opposite loop gains cause the VCOs to be tuned in opposite directions around the injected frequency. The injection frequency is then the average of the two detuned frequencies and the injected amplitude is proportional to the difference in tuning voltages. Low power consumption can be achieved by integrating the balanced ILPLL array on chip.
Keywords :
phase locked loops; spectral analysis; voltage-controlled oscillators; VCO; balanced ILPLL array; balanced injection-locked loop array; frequency estimation; injection frequency; phase-locked loop array; power consumption; power estimation; spectrum analysis; tuning voltage; unknown inband signal; Amplitude estimation; Bandwidth; Frequency estimation; Injection-locked oscillators; Phase detection; Phase frequency detector; Phase locked loops; Phased arrays; Signal resolution; Tuning;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-3647-7
DOI :
10.1109/APS.2009.5172033
