In this communication, a metasurface-based decoupling method (MDM) is proposed to reduce the mutual couplings at two independent bands of coupled multiple-input-multiple-output (MIMO) antennas. The metasurface superstrate composed pairs non-uniform cut wires with different lengths. It compact in size and effective nearby dual-band patch antennas that are strongly H-plane edge-to-edge spacing only 0.008 wavelength low-frequency band (LB). antenna fabricated measured results show isolation...

A ceramic superstrate-based decoupling method (CSDM) is proposed to reduce the mutual coupling between two closely packed dipole antennas while maintaining cross-polarization suppression. Compared with other methods, this can effectively without using any periodic structures on superstrate. The superstrate a 2 mm thin slab relative dielectric constant of 20.5 and suspended over coupled in H-plane spacing only 0.28 wavelength at 3.5 GHz. It demonstrated by both simulation measurement that...

In this paper, an extremely compact two-element linear polarized multiple-input-multiple-output (MIMO) antenna array with a metasurface superstrate is proposed. Instead of using periodic square split-ring resonators which occupy larger space and are incident angle variant, double-layer short wire utilized as the unit cell metasurface. The in size effective decoupling two nearby Bowtie antennas strongly coupled H-plane spacing only 0.27 wavelength. After decoupling, isolation between has been...

In this paper, meta-surface superstrates are used to decouple two linear polarized antennas coupled in H-plane and E-plane, respectively. By properly designing the geometry of double layer short wires as unit cell meta-surface, well height meta-superstrate, linearly can be decoupled Both antenna pairs E- H-planes with without meta-surfaces fabricated measured. The results demonstrate that superstrate able operate band 3.3-3.7 GHz reflection better than -15 dB isolation improved from 10 25...

A dual-band dual-circularly polarized transmitarray antenna (TA) operating in the 28/39 GHz millimeter-wave band is proposed this article. The TA unit consists of two parts: a broadband linearly (LP) receiving part and transmitting part. An over-2-bit phase compensation achieved by changing size U-shaped slot rotation status 24 × model with an aperture 88.8 mm built up using units fed wide-band corrugated horn antenna. simulated results show that maximum gain 26.28 dBic within low-band...

A novel dual-polarized 2D beam-steering antenna is proposed based on the reconfigurable double square loops (RDSLs). The composed of stacked patches with two ports and a surface consisting 2 × array RDSLs. Varactor diodes are integrated inner loop RDSL. steerable radiation beam can be continuously controlled by tuning four biasing voltages applied for both polarizations. experimental results show that scanning ranges up to ±32° in principal planes. has an average gain 7.87 dBi fluctuation...

A decoupling design based on metasurface partial reflective superstrate (M-PRDS) for closely arranged dual-polarized antennas with power combiners is proposed in this communication. Compared the coupling between each separate antenna element array, introduction of makes mutual subarrays rearranged and, consequently, more complicated. Therefore, M-PRDS technology required to consider abovementioned combining effect. The combined couplings are analytically calculated first place, and then, a...

This article introduces a simple decoupling structure to suppress the mutual coupling between two microstrip patch antennas. The introduced is implemented by coupled meander-line resonator and it on same plane of radiating patches so that can be suppressed without increasing profile. antennas are closely packed center distance only 0.22 wavelength at 2.6 GHz. results indicate port isolation enhanced more than 30 dB when proposed inserted antennas, which great enhancement compared initial...

In this paper, a mutual coupling reduction technique using filtering structures between two antennas resonating in adjacent frequency bands is proposed. Two patch at low band (4.8-5.0 GHz, part of 5G Band N79) and high (5.15-5.35 IEEE 802.11 ax 5 GHz Band), which are close to each other spectrum, used as an illustrative example. The decoupling structure consists open-loop resonators with function coupled the feed line on its edges. By loading structures, isolation improved from poorer than...

Abstract A new fitness function for the genetic optimization of broadband antennas is proposed. Compared with previous functions, one presented in this paper takes not only voltage standing wave ratio and gain but also frequency into consideration. In practical communication system, higher needed high band antenna, so it more suitable. An impedance matching network an antenna 30 MHz to 88 studied lastly.

This paper introduces a simple coupled meander-line resonator (CMLR) component to suppress the mutual coupling for microstrip patch antennas arranged in E-plane. The spacing between inner edges of two is only 3mm compact size, and proposed CMLRs are inserted symmetrically at edge antennas. simulated results illustrate that port isolation antenna better than 34 dB resonant frequency (2.6 GHz) with introduction under premise good matching. In addition, radiation patterns significantly improved...

In this paper, a reader antenna for near-field RFID system is proposed, which has the electromagnetic field distribution characteristics, and dead zone can be eliminated by certain technology near antenna. These zones are caused superposition of incident waves reflected waves, resulting in elimination fields. The proposed consists feedline lower layer rectangular waveguide meander line at top. two feedlines will produce standing with periodic zones, these adding line. Therefore, response...

This paper presents a small size V-band Antenna-on-Chip (AoC) with two switch controlled triangular radiating patches designed and based on 0.18 um TSMC Complementary Metal Oxide Semiconductor (CMOS) process. AoC performance is enhanced using rectangular ring Asymmetric Artificial Magnetic Conductor (AAMC). A pair of on-chip switches introduced in this design to achieve polarization reconfigurable. As AMC shields from the lossy CMOS substrate, simulated gain enhancement -1 dBi achieved at 60...

In this paper, a dual-polarized antenna with continuous 2D beam scanning is presented. The steerable achieved based on the active metasurface loaded varactor diodes. By tuning capacitance value of varactors, transmissive phase reconfigured thus deflecting direction proposed antenna. simulated steering ranges are -16°~18° and -32°~33° in E-plane H-plane respectively at 3.5GHz. Meanwhile, port refection lower than -12.7 dB operating band 3.4-3.6GHz isolation greater 20 when scanning. gain...

A new type of metasurface consisting double layer short wire for decoupling has been proposed which can solve the problem antennas arranged along H-plane. The |S21| antenna H-plane be reduced from about -10 dB to below -25 at a frequency band 3.3 GHz 3.7 while |S11| kept -15 by adding metasurface. Not only that, cross polarization also improved well.

This paper presents a meta-surface antenna array decoupling (MAAD) method for two extremely compact dual-band patch antennas. The covers 2.6GHz and 3.5GHz band is strongly coupled in H-plane with the edge-to-edge spacing of only 0.008 wavelength. High isolation between antennas obtained at both bands by using meta-surface. results proved that can be improved to more than 25dB bands.

This paper presents a low profile, multifunctional microwave device, which behaves either as dual-polarized filtering antenna or lowpass filter. For the antenna, two introduced quarter-wavelength open-circuit stubs can generate radiation null at lower frequency stopband to obtain good selectivity. Moreover, improve out-of-band suppression level high frequencies, C-shaped short-circuit and U-shaped metal strips are loaded feeding structures. In case of filter, network part patchwork together...