The application of magnetoelectric (ME) dipole to achieve wideband and low cross-polarization transmitarray design is presented in this article. First, a novel meandering-probe-fed ME that exhibits matching, central feeding configuration, symmetrical antenna structure developed. These preferred features are borrowed address the narrowband potential element-displacement issues 1 bit element design. Numerical simulations proposed ME-dipole show wide dB insertion-loss bandwidth 47% level -40...

This article presents a millimeter-wave (mmWave) dual-band dual-polarized filtenna, which can achieve desirable out-of-band rejection for 5G applications. The antenna element consists of two fully-shielded quarter-mode substrate integrated waveguide (FSD-QMSIW) cavities and stacked ring antenna. Two parts are coupled through the slot on ground. completely enclosed by metal holes copper cover to eliminate radiation loss. loaded slots tune frequencies first modes in FSD-QMSIW cavity operation....

In this communication, a dual-polarized millimeter-wave (mmWave) phased array antenna is proposed for the fifth-generation (5G)/B5G smartphones. The configuration of highly integrated with up-to-date industry design (ID) ultranarrow side frame, 3-D curved display, and covers, which are widely adopted in flagship smartphones popular among consumers. contains minor portion slotted metal frame cavity-backed module. air cavity multiple slots employed to enhance bandwidth. A strip bump...

A wideband millimeter-wave reflectarray antenna is investigated. First, using the microstrip technique, a new dualresonance unit cell proposed for reflectarray, which provides an approximately linear phase response of 0°-360° range. Additionally, its curves are nearly parallel within broad band, can widen operating bandwidth antenna. Then, cells, 1296-element designed, fabricated, and measured. Finally, measured results show that boresight gain 31.9 dBi 1-dB greater than 29.3% at Q-band....

In this article, a millimeter-wave (mmWave) endfire phased array antenna with ±45° linear polarizations is proposed for fifth generation (5G)/B5G mobile communications. The achieves by utilizing modified substrate integrated waveguide (SIW) slot polarizer. polarizer generates dual orthogonal modes equal amplitudes and 0°/180° phase difference, thereby yielding <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math...

A wideband, wide-scanning-angle, and high-efficiency 2 bit circularly polarized (CP) reconfigurable reflectarray (RRA) is presented for 2-D dynamic beam control. The achieved using tunable elements based on crossed-bowtie patches with annually distributed p-i-n diode loadings. By squeezing two interlaced into a single unit-cell making them strongly coupled, doubled phase state drastically extended element bandwidth are simultaneously obtained. In addition, simple biasing circuitry low-loss...

This letter presents a 26/38-GHz dual-band filtering balanced power amplifier (PA) using 100-nm GaAs process. Dual-band branch-line couplers are proposed for the PA, which also engage into input–output impedance matching and provide out-of-band rejection simultaneously. The PA achieves saturation output ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$P_{\text {sat}}$ </tex-math></inline-formula> ) of...

In the era of 5G and beyond, strategic utilization both sub-6 GHz millimeter-wave (mmWave) spectrums supports diverse communication services. Through smartphones, consumers can conveniently access a wide range 5G/6G-enabled Internet Things (IoT) scenarios anytime anywhere. this paper, mmWave aperture-shared antenna array are proposed for mobile terminals. For design, slot radiating is integrated into metallic frame smartphone. This design incorporates differential square-ring feeder utilizes...

Linearly polarized (LP) circularly (CP) array antennas using broadband 3D folded strip elements which can easily realize diverse polarizations in millimeter-wave (mm-Wave) band are developed. The operating principles, analyses, and corresponding design processes of the proposed LP CP provided. Both these two different excited by slot coupling a microstrip line laid on an ultrathin (i.e., 0.127 mm) substrate, contributing to possibility straightforward integration with mm-Wave front-end...

The THz frequency band offers an exceptionally wide bandwidth, making it ideal for ultra-high-data-rate communication using simple modulation schemes like amplitude-shift-keying (ASK) [1–5]. By avoiding complex schemes, we can simplify the system architecture, reducing complexity of analog mixed-signal processing components, including high-speed multi-bit ADCs and DACs, which tend to be power-hungry area-consuming. However, challenges arise due amplitude nonlinearity, significantly reduce...

In the realm of fifth-generation (5G)-enabled Internet Things (IoT), smartphone plays a pivotal role in providing users access to various IoT scenarios. With emergence millimeter-wave (mmWave) technology 5G mobile terminals, it is feasible realize an ultrabroadband, ultrahigh speed, and ultralow latency communication for advanced applications. However, smartphone, end-fire mmWave radiation blocked by metal frame. To solve this problem without altering industrial design (ID) we present new...

In this article, an on-chip aperture antenna in indium phosphide (InP) technology is proposed for terahertz transceivers. Terahertz antennas are often directly connected to the amplifier, and bulky substrate of active circuits affects impedance radiation characteristics antenna. order obtain robust performances against uncertain chip size simultaneously enhance gain efficiency, through vias (TSVs) utilized form quasi-substrate integrated waveguide (SIW) cavity. Furthermore, a dual-mode with...

In this letter, a wideband millimeter-wave (mmWave) differentially fed (DF) dual-polarized (DP) magneto-electric (ME) dipole antenna is proposed for the fifth- and sixth-generation (5G/6G) wireless communications. Benefitting from delicately designed cross-overlap differential feeding scheme deployed at center of perfectly symmetrical antenna, ME-dipole can be effectively excited to achieve operation both orthogonal polarizations. Meanwhile, radiation structures located same metallic layer...

A 300-GHz modified Gilbert upconverter with high output power and wide bandwidth (BW) in a 130-nm SiGe BiCMOS process is presented. low-impedance transmission line (low- <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$Z_{0}$ </tex-math></inline-formula> TL) introduced to achieve impedance matching between the mixer core RF/LO balun. This low-loss low- TL eliminates need for lossy capacitors ground at...

In this paper, a 300 GHz on-chip patch antenna with an off-chip package for gain enhancement in 130 nm SiGe BiCMOS is proposed. design, the bottom metal Ml and top TM2 are employed as ground radiating respectively to enhance bandwidth gain. An offchip block etched slot cavity designed antenna. The helps increase stabilize radiation pattern. simulated results show has achieved of 5.3 dBi at package, indicating of1.7 dB compared free space.

Recently in a paper by Lin, Dai and Tibboel, it was shown that the third fourth Painlevé equations have tronquée tritronquée solutions.We obtain global information about these find their sectors of analyticity, Borel summed representations as well asymptotic position singularities near boundaries analyticity sectors.We also correct slight errors mentioned.

A wideband single-layer microstrip reflectarray is investigated. Firstly, a new dual-resonance unit cell proposed for the reflectarray, which provides an approximately linear phase response during 0-360° range. Additionally, its curves are nearly parallel within broad band, can widen bandwidth. Then, 576-element of size 12λ×12λ using designed and analyzed. Simulation results show that boresight gain 27.9 dBi 1-dB bandwidth greater than 39.78% at Q band.

This article presents a fully packaged 94-GHz 16-channel local oscillator (LO) phase-shifting transmitter (TX) and single-channel receiver (RX). The implementation is accomplished using hybrid integration scheme, combining high-output-power 100 nm GaAs pHEMT front-end chips highly-integrated 130 SiGe BiCMOS beamformer chips. High-accuracy LO phase shifting achieved with the utilization of commercial SiGe-based four-channel chips, offering 7-bit control at 24–28 GHz. A 26-to-78 GHz tripler...

In this paper, three compact dual-polarized millimeter-wave antenna array designs for 5G mobile handset are presented, including an end-fire array, a broadside and tilted-beam array. The environmental effects also considered in the designs. validation, these designed arrays can effectively cover N257 (26.5 GHz −29.5 GHz) N258 (24.25 −27.5 frequency bands both polarizations with different radiation directions. Especially, beams of dual polarization similar tilted angle 45°. For better...