TY - JOUR
T1 - Amplitude Offset Estimation by Phase Comparison in Suppression Loops
AU - Warr, Paul A
PY - 2010/5/24
Y1 - 2010/5/24
N2 - In this paper, a new architecture for an RF amplitude comparator circuit is introduced. The technique employs a trigonometric relationship enacted by passive RF components to map the amplitude ratio between two co-spectral RF signals into a phase difference. The theory of operation of the circuit is discussed in detail and the results of a practical investigation are presented, validating the approach. The results demonstrate an accuracy advantage over commercially available products. Over the frequency range of 1600-2100 MHz, amplitude offset measurements to within 0.08 dB of that of a calibrated vector signal analyzer are shown.
AB - In this paper, a new architecture for an RF amplitude comparator circuit is introduced. The technique employs a trigonometric relationship enacted by passive RF components to map the amplitude ratio between two co-spectral RF signals into a phase difference. The theory of operation of the circuit is discussed in detail and the results of a practical investigation are presented, validating the approach. The results demonstrate an accuracy advantage over commercially available products. Over the frequency range of 1600-2100 MHz, amplitude offset measurements to within 0.08 dB of that of a calibrated vector signal analyzer are shown.
U2 - 10.1109/TMTT.2010.2049679
DO - 10.1109/TMTT.2010.2049679
M3 - Article (Academic Journal)
SN - 1552-5031
VL - 58
JO - Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering
JF - Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering
IS - 7
ER -