While liquid crystal elastomers (LCEs) show promise for diverse soft actuators due to their strong stimulus responsiveness, limited investigation into light perception and processing restricts wider use in intelligent systems. This study employs a hollow double-layer structure design light-controlled logic switches based on LCEs. The realizes digital circuits including AND gates, OR NOT as well an optical switch array capable of converting signals visualized signals. These exhibit...

Modern, intensive, high-density farming practices cause elevated concentrations of particulate matter (PM) inside livestock barns. PM in barns is predominantly biological, hence, it contains abundant microorganisms. Understanding the microbial composition crucial for assessing hazards air emitted from PM10 and PM2.5 a pig barn were collected winter spring, morphological, chemical, analyses performed. The samples exhibit diverse morphological characteristics. top three elements detected O, C,...

A single-layer dual-band shared-aperture antenna for vehicular communications is proposed in this article, which adopts a coplanar millimeter-wave (mm-Wave) band embedded microwave antenna. In the Vehicle-to-Everything (V2X) (5.905–5.925 GHz), an annular-ring patch based on TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">12</sub> mode designed. pair of slots are etched out radiating to reshape current distribution mode, making it more...

A dual-band structure reused aperture-sharing antenna is proposed in this letter. The mm-Wave substrate integrated waveguide (SIW) slotted cavity backed array, operating TE440 mode, embedded into the microwave annular-ring patch antenna, TM12 to share radiation aperture. Furthermore, SIW slot radiator as field regulator for effectively canceling out electric opposite inner patch. As a result, sidelobe caused by high-order mode successfully suppressed. Experimental results show that bandwidth...

Abstract Conventionally, both electrically larger (EL) arrays and sparse offer the advantage of element number reduction but disadvantage high sidelobe levels. A new scheme planar EL array antenna based on a genetic algorithm (GA) to achieve low with is proposed. To begin with, optimisation models GA for linear are analysed. Then, an slot 3 × substrate integrated waveguide cavity designed. An 8‐element designed compared uniform antenna, demonstrating in maximum level (MSLL) by nearly 4.6 dB....

To increase system capacity in the full bandwidth beam hopping satellite systems, a resource allocation algorithm based on spatial clustering is proposed. According to proportion of required available resources, allocates corresponding amount timeslots each beam, increasing premise satisfying relative fairness. A distance threshold calculated that when between beams greater than threshold, influence interference signal quality can be ignored. Thus, controlling illuminated simultaneously...

The beam spreading and evolution behavior of a partially coherent, Hermite-cosine-Gaussian (HcosG) rectangular multi-Gaussian correlated Schell-model propagating in oceanic turbulence is studied. Analytical expressions for the cross-spectral density function, as well root mean square (rms) width spectral degree coherence, are derived based on extended Huygens-Fresnel principle. HcosG exhibits multi-lobe pattern at short propagation distances. dependencies number, size, shape, centroid lobes...

In order to get a better mapping effect and use it in robot navigation, this paper first established the kinematic model dynamic of wheeled mobile used experimental research, determined relationship between relevant parameters equipment. After comparing analyzing advantages disadvantages different SLAM (Simultaneous Localization Mapping) algorithms such as HectorSLAM, LagoSLAM, Cartographer, GMapping, Monte Carlo adaptive positioning laser (GMapping) were selected for results. And aiming at...

In this letter, a novel grooved metasurface (MS) is proposed to realize wideband low radar cross section (RCS) transmitarray with high aperture efficiency. Through grooving on MS, the radiation performance of low-RCS can be improved. For transmission characteristic, MS provide higher amplitude in wide bandwidth by grooving. reflection produces gentle reflective phase curve. The designed used achieve high-performance and scattering simultaneously. A prototype fabricated measured. Measurements...

Summary Space information network (SIN) is difficult to fully utilize the limited on‐board resource due its dynamic and heterogeneous nature, while traditional management methods cannot adapt increasingly diverse task requirements. cloud architecture an effective technology reduce pressure on satellite resources. To effectively manage space resources, we design a resources allocation strategy based clustering. Firstly, propose architecture. Then, genetic algorithm cluster Finally, method...

In this paper, a planar high-gain millimeter-wave (mmW) slotted substrate integrated waveguide (SIW) cavity antenna array with low sidelobe and grating lobe levels is proposed. The consists of SIW resonator an transmission line (TL). To achieve high gain simplify the structure element, resonated in high-order mode. Then, implemented only four such elements. By analyzing pattern multiplication principle accurately adjusting element spacing, level caused by large spacing mode considerably...

A miniaturized open-loop resonator bandpass filter with suppression of second and third harmonics is demonstrated in this paper. This novel based on the common capacitive terminations to achieve size minimization, while spurious response are suppressed by low characteristic impedance microstrip open stub lines as terminations. The simulations measurements a 0.9GHz prototype presented. measured results agree well simulation. Compared filter, upper stopband from 1GHz 3GHz including below...

A 24-GHz frequency modulation continuous-wave radar sensor with a novel type, low-profile, and low cost array antenna, is presented. Gunn voltage-controlled oscillator the driver amplifier MMIC act as transmitter Rat-race hybrid mixer receiver, respectively, connected by hexferrite microstrip circulator. 100-patch antenna high gain narrow beam width operates at system in k-band. This made 10/spl times/10 elements (90/spl times/90 mm/sup 2/) ,the E-plane has 3 dB beam-width /spl plusmn/...

This paper presents the design of novel 1D compact microstrip resonant cells (CMRC). Several thin line arrays in 50Ω with special configurations are fabricated without requirement any additional process. Three proposed structure can provide a wide stopband −10 dB from 12.7 to 35.9 GHz and −30 13.8 GHz, respectively. CMRC be used for various wideband microwave-circuit applications. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 386–387, 2005; Published online InterScience...

Laser direct writing (LDW) as a significant maskless lithography technique has been widely applied in scientific research and industrial manufacture. However, low fabrication resolution restricts its application nanofabrication due to optical diffraction limit. This work presents simple novel way improve the LDW by multiple-exposure method with energy laser beam. Experiments indicate that could increase 33.3% for same exposure depth, is close simulation results. It should be pointed out...

In order to extract effectively detection signals in the noise background for non-stationary signal.On basis of EEMD, improved EEMD is put forward, improve threshold reduction researched this paper.The simulation signal compared effect wavelet,EMD,EEMD,and EEMD. The have best result , highest signal-to-noise ratio, smallest standard deviation error.After measurement time domain waveform smooth. More high frequency was obviously reduced Hilbert time- spectrum. Signal-to-noise ratio...

Abstract To achieve multi‐function integration and independent performance regulation of microwave millimetre‐wave (mm‐Wave) shared‐aperture antennas, a design method based on embedded structure fusion is proposed. In the Sub‐6G band, high‐order mode annular‐ring patch antenna designed. transform non‐broadside characteristics, current distribution TM 31 12 modes reconstructed by slotting in centre patch. Additionally, electric field modified loading shorting pins to beam broadening. 5G...