Results 61 to 70 of about 418 (202)
International Journal of Circuit Theory and Applications, EarlyView.A co‐designed implicit‐reset phase‐frequency detector (PFD) and nonlinear amplifier‐assisted charge pump (CP) achieve dead zone‐free operation from 10 MHz to 4.7 GHz with < 0.5% current mismatch without calibration, enabling −80 dBc of reference spur and 0.50 ps of RMS jitter in a 180 nm of CMOS PLL.
A. Ghaemnia +3 more
wiley +1 more source
Low-complexity FTN receivers based on frequency domain iterative decision feedback equalization
Tongxin xuebao, 2017 Faster-than-Nyquist (FTN) signaling can improve the system effectiveness without reducing the system reliability,but the fierce inter-symbol interference (ISI) introduced by it may cause that the complexity of the optimal receiver is intolerable.An ...
Juan ZENG +4 more
doaj +2 more sources
Parallel Multi‐Operand Addition Using CPA‐Trees and Carry‐Select Adders
International Journal of Circuit Theory and Applications, EarlyView.A balanced parallel CPA‐tree architecture with CSLA reduces the critical‐path delay of multi‐operand addition while preserving structural regularity. ASIC results demonstrate delay reductions of up to 34% with low area overhead, providing an efficient and scalable solution for high‐performance arithmetic.
Lucas R. Kieslich +3 more
wiley +1 more source
Simulation and measurement of multi-carrier and single-carrier frequency domain equalization systems
Tongxin xuebao, 2009 Chinese national standard of digital terrestrial Television broadcasting（DTTB） was a block transmission system in which the orthogonal frequency-division multiplexing（OFDM） and single-carrier frequency domain equalization（SC-FDE） transmission ...
GAO Zhen1, PENG Ke-wu2, PAN Chang-yong2
doaj +2 more sources
An Ultra‐Low‐Power Biopotential Acquisition Analog Front‐End Chip for Wearable Devices
International Journal of Circuit Theory and Applications, EarlyView.A 0.8‐V, 1.2‐μW biopotential AFE combines a chopper‐stabilized CCIA with dual‐time‐scale EDO management. The slow DSL preserves > 1 GΩ input impedance, whereas an event‐triggered fast‐recovery path shortens return to the linear range after abrupt electrode‐offset disturbances. ABSTRACT A 0.8‐V, 1.2‐μW biopotential analog front‐end (AFE) IC is presented
Zhang Xin +4 more
wiley +1 more source
Time-frequency differential encoding and detection for cyclic prefix assisted CDMA system
Tongxin xuebao, 2007 A new differential encoding and detection scheme for cyclic prefix assisted CDMA system was proposed.Considering the correlation between channel impulse response in both time domain and frequency domain,a time-frequency differential encoding scheme and ...
FANG Zhao-xi +2 more
doaj +2 more sources
Laser‐Textured Field‐Engineered Interface for Robust Dry‐Processed Cathodes in Lithium‐Ion Batteries
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Laser‐patterned dry electrodes applied to current collectors could serve as a promising alternative to the limitations of conventional dry electrodes. Laser technology provides a fast and simple method to enhance the surface roughness of current collectors, improving the adhesion at the electrode–current collector interface.
Chaerin Jung +8 more
wiley +1 more source
SensorsTerahertz (THz) communication is regarded as a key technology for achieving high-speed data transmission and wireless communication due to its ultra-high frequency and large bandwidth characteristics.
Yunchuan Liu +8 more
doaj +1 more source
Research on single carrier frequency domain equalization system based on FQPSK modulation
ITM Web of Conferences, 2018 Feher-patented quadrature phase shift keying (fqpsk) modulation is proposed for single-carrier frequency domain equalization (sc-fde). this paper puts forward a new method modulation called cc-bcd-fqpsk.
Zhang Meng, Bie Zhisong
doaj +1 more source
Modeling and Output Optimization of Triboelectric Microphone for Acoustic Energy Harvesting
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.This work elucidates the fundamental multiphysics coupling mechanisms governing acoustic T‐phone, providing a critical theoretical foundation and a predictive design paradigm for the future engineering and deployment of next‐generation, self‐powered acoustic sensors.
Dan Liu +6 more
wiley +1 more source