Gain-Phase Error-Calibrated Piezoelectric Sensor Array-Based Impact Localization on Stiffened Curved Composite Structures [PDF]
Sensors, 2022 Stiffened structure-induced gain-phase errors degrade the performance of the high-resolution two-dimensional multiple signal classification (2D-MUSIC) algorithm, which makes it impossible to ensure the high accuracy of impact localization results.
Zhiling Wang +3 more
doaj +2 more sources
Adaptive Sparse Representation for Source Localization with Gain/Phase Errors
Sensors, 2011 Sparse representation (SR) algorithms can be implemented for high-resolution direction of arrival (DOA) estimation. Additionally, SR can effectively separate the coherent signal sources because the spectrum estimation is based on the optimization ...
Huadong Meng +3 more
doaj +2 more sources
A K-Band Four-Channel Beamformer with Temperature Compensation Based on 65 nm CMOS Process [PDF]
MicromachinesThis paper presents a K-band four-channel phased array beamformer with temperature compensation in 65 nm CMOS for 5G and satellite communications. The beamformer includes a four-way power divider/combiner, four RF channels, and digital control circuits ...
Cetian Wang +8 more
doaj +2 more sources
Gain-gain and gain-lossless PT-symmetry broken from PT-phase diagram
, 2022 Parity-time (PT) symmetry and broken in micro/nano photonic structures have been investigated extensively as they bring new opportunities to control the flow of light based on non-Hermitian optics.
Yali Jia (251680) +7 more
core +1 more source
Gavestinel does not improve outcome after acute intracerebral hemorrhage: an analysis from the GAIN International and GAIN Americas studies [PDF]
, 2005 <p><b>Background and Purpose:</b> Glycine Antagonist in Neuroprotection (GAIN) International and GAIN Americas trials were prospectively designed, randomized, placebo-controlled trials of gavestinel, a glycine-site antagonist and ...
Lees, K.R. +32 more
core +1 more source
E‐band broadband digital controlled phase‐inverting variable gain amplifier in 65‐nm CMOS
Electronics Letters, 2021 This letter reports an E‐band phase‐inverting variable gain amplifier in 65‐nm complementary metal‐oxide‐semiconductor (CMOS) technology. A fractional bit based structure with replica cells is proposed to minimise the phase error and ensure the tuning ...
Yikun Feng, Dixian Zhao
doaj +1 more source
Joint Angle Estimation and Array Calibration Using Eigenspace in Monostatic MIMO Radar
IEEE Access, 2020 In this article, aiming at the presence of the unknown gain-phase uncertainties in monostatic multiple-input multiple-output (MIMO) radar, an eigenspace based algorithm for joint parameter estimation is proposed to achieve angle and array calibration ...
Liangliang Li +5 more
doaj +1 more source
Correction of transmitter gain and phase errors at the receiver [PDF]
, 2002 This paper explores the benefits of compensating transmitter gain and phase inbalances in the receiver for quadrature communication systems. It is assumed that the gain and phase imbalances are introduced at the transmitter only.
Morling, R.C.S., Cetin, E., Kale, I.
core +1 more source
Strip-Mode Microwave Staring Correlated Imaging with Self-Calibration of Gain–Phase Errors
Sensors, 2019 Microwave staring correlated imaging (MSCI) can realize super resolution imaging without the limit of relative motion with the target. However, gain–phase errors generally exist in the multi-transmitter array, which results in imaging model ...
Rui Xia +3 more
doaj +1 more source
Binary phase detector gain in bang-bang phase-locked loops with DCO jitter [PDF]
, 2010 Bang-bang phase-locked loops (BBPLLs) are hard nonlinear systems due to the nonlinearity introduced by the binary phase detector (BPD). In the presence of jitter, the nonlinear loop is typically analyzed by linearizing the BPD and applying linear ...
Gleeson, James +5 more
core +1 more source