This article describes a high-efficiency harmonic suppression metasurface (HSMS) energy collector, which is insensitive to frequency, input power, and load. A method of integrating function into collection (MS) improve system conversion efficiency proposed. Integrated RF synthesis channels in HSMS diode power availability turn-on time. An <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$8\times 8$...

A flexible nonsymmetrical metamaterial tag with high gain, efficiency, and wide readable angle range is proposed here, whose working band 900–930 MHz. We improved impedance match between tag's antenna chip to reduce the mismatch loss increase radiation efficiency of by loading border cross units top or bottom defaulted above below central folded dipole. Furthermore, in size 95 mm×57 mm×0.23 mm, it can realize 5 dBi realized 89.13%, 54 m reading distance when reader's effective isotropic...

A new dual-broadband printed dipole antenna for base station applications is proposed in this communication. This has three different dipoles with the same feed point and an extra parasitic strip. The two arms of are on opposite sides substrate symmetrical centerline, but strip at end just put one side. Besides, a U-shaped reflector designed bottom to realize good radiation characteristics working frequency. simulated measured results show agreement. studied bands both broadened which,...

This letter proposes a new method of maintaining the half-power beamwidth (HPBW) in H-plane for printed-strip dual-broadband dipole antenna by loading dielectric lens. The lens is perpendicularly placed direction radiation from antenna. In order to reduce loss and volume, Fresnel structure used solution broadband, covering entire 2G/3G/LTE spectrum 690-1000 MHz 1710-2770 MHz. measured results show that lens, HPBW maintained at 120° without affecting working frequency range antenna, gain...

Pulse oxygen saturation is an important physiological parameter for monitoring content and respiratory function. It very inconvenient that the pulse oximeter in hospital use transmission probe data measurement have to be done close range. Therefore, this paper designed a reflection tele-monitoring system. Firstly, which based on sensor DCM03 microcontroller MSP430 designed. Subsequently, Zigbee wireless module integrated circuit board realize remote measurement. Finally, second derivative of...

This paper presents a miniaturized Dielectric resonator antenna (DRA) array of 3D-coverage for the 5G mobile terminal applications. To realize beam scan with less linear array, two subarrays are used which placed at both ends substrate, respectively. Here, one subarray has 8 elements and works as phased then these responsible radiation on different regions, vertical substrate. And each element is DRA whose size reduced to be half original by loading metal sheet. The simulated results show...

This paper presents a substrate integrated waveguide (SIW) bandpass filter with continuously tunable center frequency and bandwidth (BW). The is based on combline SIW resonators loaded varactors to tune the frequency. Surface mount between two coupled control inter-resonator coupling bandwidth. are also used load feedline adjust external at different frequencies bandwidths. A two-pole electrically reconfigurable designed, simulated optimized. shows 3 dB BW range of 82-260 MHz around 4.5 GHz,...

We present the idea and design of a metasurface based on ring slot element for electromagnetic energy harvesting. The receiving efficiency near unity can be realized, wave from each polarization direction received. metamaterial cell consists four arranged in rotating central symmetry'. impedance harvester is engineered to match with free space, so that incident EM captured minimum reflection, then introduce into load resistance through through-hole. simulation results show capture over 98%...

In this paper, two kinds of high gain and low sidelobe emission array antennas are presented. The designed by dloph-chebyshev synthesis Taylor respectively, microstrip antenna is obtained designing feed network with unequal amplitude power divider. simulation results show that the transmitter using method at 5.8GHz has 23.2 dBi gain, beam Angle plane yoz xoz respectively 12° 12°, 23.3 face 11° side lobe have good performance. They can be used in wireless energy transmission.

In this paper, a new beamforming algorithm for phased array antennas is proposed, the plant growth gene algorithm. The consists of three steps. Firstly, according to excitation relation unit before and after local fine-tuning antenna radiation pattern, model solving difference established. Secondly, Taylor series expansion used solve model, established based on this, beam tuning network designed realize model. Finally, obtained by neural algorithm, called multiple times high-precision...

A passive, high gain and efficiency RFID tag antenna with two kinds of enhanced complementary spilt ring resonator (ECSRR) units is proposed in this paper. The composed a centered folded dipole period-arrayed metamaterials bilaterally, which named top /bottom bad circle ECSRR (TBCSRR/BBCSRR) units. Simulated results show that the tag's working band 908 MHz-927MHz. return loss 33.7dB, realized 3.92dBi, 3dB beam width 184°, total power transmission coefficient are 82.4% 0.9996, respectively,...

In this paper, a new metamaterial lens antenna for the compact test range (CATR) system is proposed. CATR design, feed source choke coil horn antenna, and unit formed by etching slotted metal sheet on single-layer dielectric substrate. The size of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$5\text{mm}\times 5\text{mm}$</tex> , overall xmlns:xlink="http://www.w3.org/1999/xlink">$53\text{cm}\times 53\text{cm}$</tex> number units 101×101....

In this paper, a reflective compact antenna test range based on low profile meta material array is proposed, aiming to reduce the cost of traditional range. The system comprises choke coil horn and formed by triple-ring electromagnetic Metamaterial units. half-power beam width 46°, ensuring uniform electric field distribution within main coverage area rapidly decreasing zero at edges, minimizing impact edge effects quiet zone. metamaterial units employ structure, providing 360° phase shift...

In this paper, a design of metasurface array antenna that combines PCB circuit board and ITO glass for mobile phone back cover is proposed. The element mainly consists feed structure printed on the radiation patch glass. proposed can realize ± 45° dual-polarization one single gain higher than 7.91dBi, operation bandwidth covers 24.125 30.15GHz, isolation between two polarization ports $18 \mathrm{~dB}$. A $1 \times 4$ which composed designed to achieve 5° beam scanning.

In this paper, a 1 × 4 power divider capable of implementing any phase difference output based on slow-wave substrate integrated waveguide is designed at X-band. The upper surface the port SIW loaded with microstrip multi-segment line unit periodically. current distribution different ports and electromagnetic field in dielectric are changed, so that each has velocities, thus achieving outputs. For four consecutive have shift 30 ± 1°, S11 below - 10dB S21 6 0.2dB over frequency band 9.9 to...

In this paper, millimeter-wave transmitter based on FPGA is designed. The consists of intermediate frequency (IF) module, local oscillator (LO) module and mixing module. IF an two DACs, DAC communicate through the JESD204B protocol to output multi-channel signals. LO a VCO evaluation board that provides signal for PCB mainly includes four mixers power divider. uses upconvert band. Tests show can realize phase adjustment digital baseband signal. adjust by numerically controlled (NCO)....

this paper, a tool software for beamforming of phased array antenna is designed. The has clear GUI, visualizes the radiation pattern, supports direct adjustment pattern beamforming, provides an effective solution shortcomings optimization algorithm and can be used as new solution.

A novel wideband, low loss and full phase adjustable metamaterial unit is proposed in this paper. The simple structure can reduce the simulation time antenna production cost. consists of only two fork elements on both surfaces a piece thin dielectric substrate. Its transmission coverage over <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$360^{\circ}$</tex> , reflection coefficient better than - 10dB -0.5dB. lens with capability beam scanning...