Results 31 to 40 of about 518,836 (208)

Image-Rejected Multi-Band Frequency Down-Conversion Based on Photonic Sampling

Photonics, 2022
An image-rejected multi-band frequency down-conversion scheme is proposed and experimentally demonstrated based on photonic sampling. The multi-band radio-frequency (RF) signals to be processed are copied into two replicas in quadrature, which are then ...
Liuzhu Xu, Di Peng, Yuwen Qin, Jianping Li, Meng Xiang, Ou Xu, Songnian Fu   +6 more
doaj   +1 more source

Digital-phase-shifter performance

Electronics Letters, 1973
The performance of a new type of digital phase shifter is compared with that of analogue systems of comparable complexity. The digital method results in greater stability and precision and is particularly applicable to digitally controlled systems that require a large number of phase-shifted signals.
openaire   +2 more sources

A Self-Body-Biasing Network of Vector Sum Phase Shifter for Reduction of Output Capacitance Variation and Supply Current Variation

IEEE Access
This paper presents the self-body-biasing effects of a vector-sum phase shifter(VSPS) in 0.13- $\mu $ m CMOS technology. The self-body-biasing network is simply implemented by connecting the drain and body terminals of a vector-sum MOSFET amplifier ...
Junhan Lim, Gwanghyeon Jeong, Songcheol Hong   +2 more
doaj   +1 more source

Electronically Controlled 35-bit Substrate Integrated Waveguide Phase Shifter

IEEE Access
A 35-bit electronically-controlled digital substrate integrated waveguide (SIW) phase shifter with high phase resolution and large phase shift range is proposed in this paper. The main part of phase shifter contains two rows of metallic vias in each side
Xingyu Pang, Yunjie Geng, Junhong Wang, Xi Li, Lin Yang, Hongwei Cai   +5 more
doaj   +1 more source

Reconfigurable K-Band MIMO Transmission With On-Board Vector Calibration

IEEE Access, 2018
This paper presents a reconfigurable multi-input and multi-output amplifier architecture with on-board multiport vector calibration (MVC) for flexible multi-channel transmission in K-band.
Seong-Mo Moon, Han Lim Lee, In-Bok Yom, Moon-Que Lee   +3 more
doaj   +1 more source

A Ka-Band Balanced Four-Beam Phased-Array Receiver With Symmetrical Beam-Distribution Network in 65-nm CMOS

IEEE Access, 2021
This paper demonstrates a Ka-band CMOS phased-array receiver capable of generating four balanced beams from two inputs. A passive four-beam symmetrical differential network is proposed to distribute two input signals to eight channels and facilitate beam
Na Peng, Peng Gu, Dixian Zhao
doaj   +1 more source

A New Look at the Coding in Time-Modulated Arrays

International Journal of Information and Communication Technology Research, 2021
In this paper, we show that the digital code bits used in the coded time-modulated arrays (TMA) can be interpreted as vector elements, and with this new interpretation, a better understanding of the relationship between the codes and the amplitude/phase ...
Mehdi Gholami, Ehsan Sadeghi, Mohammad Neshat   +2 more
doaj  

A 24 GHz Waveguide based Radar System using an Advanced Algorithm for I/Q Offset Cancelation [PDF]

Advances in Radio Science, 2017
Precise position measurement with micrometer accuracy plays an important role in modern industrial applications. Herewith, a guided wave Six-Port interferometric radar system is presented.
C. Will, S. Linz, S. Mann, F. Lurz, S. Lindner, R. Weigel, A. Koelpin   +6 more
doaj   +1 more source

FPGA-Based Implementation of All-Digital QPSK Carrier Recovery Loop Combining Costas Loop and Maximum Likelihood Frequency Estimator

International Journal of Reconfigurable Computing, 2014
This paper presents an efficient all digital carrier recovery loop (ADCRL) for quadrature phase shift keying (QPSK). The ADCRL combines classic closed-loop carrier recovery circuit, all digital Costas loop (ADCOL), with frequency feedward loop, maximum ...
Kaiyu Wang, Zhiming Song, Xianwei Qi, Qingxin Yan, Zhenan Tang   +4 more
doaj   +1 more source

A Low-Loss and Full-360° Reflection-Type Phase Shifter for WLAN Wireless Backhaul Applications

IEEE Access, 2023
This paper presents a reflective-type phase shifter (RTPS) capable of a full 360° phase shift range with low-loss and compact for 5.47–5.85-GHz WLAN wireless backhaul.
Wenjian Ma, Pei Zou, Libing Bai, Kai Chen   +3 more
doaj   +1 more source