Zobrazeno 1 - 10
of 140
pro vyhledávání: '"Zhongjun Yu"'
Publikováno v:
Case Studies in Thermal Engineering, Vol 63, Iss , Pp 105250- (2024)
To increase the power density of the original generator, it is desired to boost the generator's power to 1.2 times its original capacity. However, the cooling structure of the original generator cannot meet the heat dissipation requirements of the up
Externí odkaz:
https://doaj.org/article/7f83e404bdbe4f798e5d00f2629a66c1
Publikováno v:
IET Microwaves, Antennas & Propagation, Vol 18, Iss 4, Pp 188-195 (2024)
Abstract This article presents a millimetre‐wave (MMW) wideband multibeam antenna array with a pillbox transition using multilayer low‐temperature cofired ceramic (LTCC) technology. The mushroom structure with dual resonant modes offers wideband
Externí odkaz:
https://doaj.org/article/b4c30faf36984a60bf4972ed2fb6f456
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 12031-12047 (2024)
Multiband synthetic aperture radar (SAR) image fusion combines the scattering characteristics of targets from different bands to provide a comprehensive and informative output. However, the conventional SAR denoise and fusion separation framework oft
Externí odkaz:
https://doaj.org/article/a5cba91336f8459493c3b5a1ed56282a
An Enhanced Shuffle Attention with Context Decoupling Head with Wise IoU Loss for SAR Ship Detection
Publikováno v:
Remote Sensing, Vol 16, Iss 22, p 4128 (2024)
Synthetic Aperture Radar (SAR) imagery is widely utilized in military and civilian applications. Recent deep learning advancements have led to improved ship detection algorithms, enhancing accuracy and speed over traditional Constant False-Alarm Rate
Externí odkaz:
https://doaj.org/article/ff114b4cfcdb4772a81cd54a98b26038
Publikováno v:
Remote Sensing, Vol 16, Iss 19, p 3554 (2024)
Translational motion compensation constitutes a pivotal and essential procedure in inverse synthetic aperture radar (ISAR) imaging. Many researchers have previously proposed their methods to address this requirement. However, conventional methods may
Externí odkaz:
https://doaj.org/article/7d787d4b7e664b14a8163f28caa2f990
Publikováno v:
IET Microwaves, Antennas & Propagation, Vol 17, Iss 7, Pp 574-582 (2023)
Abstract A broadband substrate integrated cavity (SIC) antenna array based on high‐order mode is proposed for low‐temperature cofired ceramic (LTCC) integrated systems in W‐band. To improve the gain of antenna element, a large SIC is adopted to
Externí odkaz:
https://doaj.org/article/83e7332fbb66453695187596ab0e509b
Publikováno v:
Micromachines, Vol 15, Iss 6, p 669 (2024)
With the continuous development of wireless communication technology, the frequency band of 6G communication systems is moving towards higher frequencies such as millimeter waves and terahertz. In such high-frequency situations, wireless transmission
Externí odkaz:
https://doaj.org/article/f03666b5c7eb496396b7df4b0de0fb39
Analysis and Design of a 2-40.5 GHz Low Noise Amplifier With Multiple Bandwidth Expansion Techniques
Publikováno v:
IEEE Access, Vol 11, Pp 13501-13509 (2023)
This paper analyzes the main factors limiting the bandwidth expansion of low-noise amplifiers (LNA) and designs a broadband LNA with a bandwidth of 2-40.5 GHz. The LNA is designed using multiple bandwidth expansion methods, including cascode, resista
Externí odkaz:
https://doaj.org/article/ce2d5bec01044b198f3729989c52d5d7
Publikováno v:
IEEE Access, Vol 11, Pp 3872-3880 (2023)
This paper presents a high-accuracy multifunction chip (MFC) with amplitude and phase control in X-band. The MFC is designed with a common leg structure and incorporates a 6-bit attenuator (ATT), a 6-bit phase shifter (PS), two gain compensation ampl
Externí odkaz:
https://doaj.org/article/346a5b4200784665ab8b9a6f355d5f7a
Publikováno v:
Case Studies in Thermal Engineering, Vol 47, Iss , Pp 103068- (2023)
This study focuses on investigating an axial-radial hybrid ventilation generator. The stator and rotor of the generator experience high losses. They are mitigated through simultaneous cooling air blown in from both sides of the generator. The stator
Externí odkaz:
https://doaj.org/article/6e4a647ff6ea43109cff5e9d96b5d13f