Results 1 to 10 of about 61,579 (120)

A Ku-Band Miniaturized System-in-Package Using HTCC for Radar Transceiver Module Application

open access: yesMicromachines, 2022
This paper introduces a miniaturized system in package (SIP) for a Ku-band four-channel RF transceiver front-end. The SIP adopts the packaging scheme of an inner heat-dissipation gasket and multi-layer substrate in the high temperature co-fired ceramics (
Fan Yang, Bowen Zhang, Leijun Song
doaj   +1 more source

Microwave Passive Direction-Finding Method Based on NV Color Center in Diamond

open access: yesMicromachines, 2023
In this study, we established a passive direction-finding scheme based on microwave power measurement: Microwave intensity was detected using microwave-frequency proportion integration differentiation control and coherent population oscillation effect ...
Qi Wang   +4 more
doaj   +1 more source

Low-Profile Frequency-Reconfigurable LTE-CRLH Antenna for Smartphones

open access: yesIEEE Access, 2020
This paper presents a monopole antenna loaded with one frequency-reconfigurable composite right/left-handed (CRLH) unit cell. This antenna is designed by means of two varactor diodes and with changing capacitance operating at LTE700 (698-798 MHz), LTE850
A. Shahgholi, G. Moradi, A. Abdipour
doaj   +1 more source

Imaging Simulation and Damage Assessment Feature Analysis of Ku Band Polarized SAR of Buildings

open access: yesLeida xuebao, 2020
Building damage assessment is important in disaster emergency monitoring. In recent years, with the increase of multi-polarization capability of Synthetic Aperture Radar (SAR), Polarimetric Synthetic Aperture Radar (PolSAR) provides more possibilities ...
PANG Lei   +7 more
doaj   +1 more source

Microwaves in Chemistry

open access: yesIEEE Journal of Microwaves, 2021
The unique properties of microwaves make them useful in many diverse applications across a wide range of fields, spanning much of engineering and science. In the chemical sciences, microwaves provide a toolkit of electric and magnetic effects with which,
Daniel R. Slocombe, Adrian Porch
doaj   +1 more source

Photonic Approach for Measuring AOA of Multiple Signals With Improved Measurement Accuracy

open access: yesIEEE Photonics Journal, 2020
The objective of this paper is to present a microwave photonic system that can measure the angle of arrival (AOA) of multiple microwave signals with improved measurement accuracy.
Hao Chen   +2 more
doaj   +1 more source

All-Optical Pulsed Signal Doppler Frequency Shift Measurement System

open access: yesIEEE Photonics Journal, 2021
A simple and all-optical Doppler frequency shift (DFS) measurement system is presented. It is based on a dual-drive Mach Zehnder modulator (DDMZM) driven by a transmitted signal and an echo signal received by an antenna.
Chongjia Huang, Erwin H. W. Chan
doaj   +1 more source

Intercalibration of FY-3D MWTS Against S-NPP ATMS Based on Microwave Radiative Transfer Model

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Accurate and stable in-orbit radiometric calibration of a satellite instrument is fundamental to Earth geophysical parameter estimation. This article addresses the intercalibration of the microwave temperature sounder (MWTS) on the Chinese second ...
Xian-Hui Su, Geng-Ming Jiang
doaj   +1 more source

New Technique for Improving Modal Filter Performance by Using an Electromagnetic Absorber

open access: yesIEEE Access, 2022
This paper presents a novel technique for improving modal filter (MF) performance by using an electromagnetic absorber which shows a significant improvement in attenuation of ultra-wideband interference. The authors analyzed the effect of the absorber on
Yevgeniy S. Zhechev   +2 more
doaj   +1 more source

Instantaneous Microwave Frequency Measurement Using Programmable Differential Group Delay (DGD) Modules

open access: yesIEEE Photonics Journal, 2010
We propose and experimentally demonstrate a photonic approach for the measurement of microwave frequencies with adjustable measurement range and resolution.
Songnian Fu   +3 more
doaj   +1 more source

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