This paper presents a novel dual-band base station antenna array using filtering elements for size miniaturization. It consists of two 1 × 6 subarrays arranged side by side, which are designed Digital Cellular System (DCS: 1710-1880 MHz) and Wideband Code Division Multiple Access (WCDMA: 1920-2170 applications. The composed with high in-band radiation efficiency out-of-band rejection levels. the DCS subarray is suppressed in WCDMA band vice versa. Mutual coupling between subarrays,...

This paper presents a compact dual-band 4 × 8 antenna array with dual polarizations and two beams for basestation applications. It consists of 4×4 subarrays operating at 3G (1710-2170 MHz) long term evolution (2490-2690 bands. For size miniaturization, the elements are interleaved each other. The mutual coupling between different bands is suppressed by using filtering antennas out-of-band radiation suppression. And spacing them can be decreased, resulting in miniaturization. To obtain stable...

An extremely ultrawideband (UWB) antipodal Vivaldi antenna with a high gain and excellent impedance matching is proposed.An elliptical-shaped director embedded in an exponentially tapered slot employed to enhance the at high-frequency band, while metamaterial inspired structure around center frequency band symmetry of radiation pattern low-frequency band. Furthermore, two sets rectangular slits are symmetrically improve Based on this novel structure, good over UWB successfully designed.The...

A coplanar waveguide (CPW)-fed dual-wideband antenna formed by a triangular monopole and U-shaped is presented. The can generate two wide bands centered at about 2.5 GHz 5 to cover all the 2.4/5.2/5.8 WLAN 2.5/3.5/5.5 WiMAX bands. Furthermore, has simple planar structure occupies small size of 28 X 33 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> , including finite ground CPW feeding mechanism. Good dipole-like radiation...

A compact dual band-notched ultra-wideband slot antenna with sharp characteristics and controllable notched bandwidths is presented.The formed by a rectangular chamfered corners on printed circuit board ground plane, T-shaped stub two sets of compound bandnotched structures.The structures are employed to generate desired lower upper rejected bands satisfactory skirt sufficient rejection bandwidths.Moreover, the bandwidth either or band can be independently adjusted changing size location...

This article presents a wideband ±45° dual-polarized six-element antenna array with stable radiation pattern for base-station applications. Each element consists of four folded dipoles, parasitic patch, and convex-shaped reflector. To generate pattern, the close-in dipoles are arranged uniformly in square shape excited simultaneously by two integrated baluns. The patch is placed above to enhance impedance bandwidth reaching 64.7% (VSWR <; 1.5 within 1.4-2.77 GHz), while reflector designed...

This communication presents a broadband horizontally polarized (HP) omnidirectional antenna array with low gain variation for base-station applications. It consists of six units. In order to generate HP radiation patterns each unit, three wideband planar dipoles are employed as basic elements and they connected by three-way power divider equal magnitude phase, conducting loop antenna. Based on such configuration, the unit obtains an pattern well wide bandwidth 48.2% (VSWR <; 1.5 within...

A dual-broadband vertically polarized omnidirec-tional patch antenna with simple low-profile structure is proposed for mobile communication. The design formed by a wheel-shaped patch, circular ground reflector, four arc-shaped strips, feeding pins, eight shorting pins and 1-to-4 power divider. connected to the reflector shoring fed divider generate TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">01</sub> or...

ABSTRACT An ultrawideband double‐ridge horn (DRH) antenna having a high gain and excellent impedance matching is presented. Two metal reflectors are perpendicular to the two ridges for improving lower‐ center‐frequency gain, while sets of metallic gird sidewalls used fix together structural stability further increase lower frequency gain. Additionally, fork‐shaped dielectric plate, which fixed between ridges, improve higher To at 1–18 GHz, microstrip line smoothly tapered ground plane...

ABSTRACT A patch filtenna with high out‐of‐band suppression levels is presented in this letter. The proposed antenna configured a parasitic and driven fed by rectangular strip connected to vertical coaxial probe. Etching four slots on the rhombus‐shaped can introduce high‐frequency radiation null. One open ring feeding will produce low‐frequency null resonance mode, making operating bandwidth wider. Meanwhile, placed above further improve impedance filtering performance. designed 0.62 λ 0 ×...

With wide impedance bandwidth (IBW), axial-ratio (ARBW), stable AR beamwidth, and half-power beamwidth (HPBW), a dual-circularly polarized (DCP) crossed-dipole antenna is proposed. Each dipole consisting of two patches fed by pair parallel transmission lines, leading to IBW. To enhance the ARBW quadrature wideband coupler used, overlapping IBW up 100%. The integrated with pairs line, are printed on substrates, which squeezed into space between radiators reflector, resulting compact...

A compact broadband patch filtenna with enhanced stopband suppression is presented in this letter. The designed antenna configurated a simple structure having two substrates of 0.04λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> spacing (λ the free space wavelength at center frequency). rectangular Π-, Γ-, and inverted Γ-shaped slots printed on top substrate fed by coaxial probe. abovementioned three create additional resonance modes...

Targeting the high-quality signal and transmission robustness of sensing communications in future intelligent vehicles, this paper proposes an ultra-wideband compact antenna which can work at left-hand circular polarization (LHCP) right-hand (RHCP). It consists two cross-arranged dipoles, four parasitic elements, a feeding network, ground plane. The radiation arm dipoles is shaped truncated elliptical form to broaden 3-dB axial ratio bandwidth. To stabilize pattern improve higher frequencies...

A compact wideband dual-polarized omnidirectional antenna array for base-station applications is proposed. It consists of ten units. To generate ±45° ominidirectional radiation with low gain variation each unit, three close-in crossed-dipole elements are uniformly arranged in a regular triangle shape and excited by two 1-to-3 power dividers equal magnitude phase, acting as loop antenna. obtain wide impedance bandwidth the dipole element divider designed to operate well-matched band....

A dual-wideband dual-polarized dipole antenna for base-station applications is proposed. This consists of a pair crossed dipoles, circular director, and metallic reflector. The dipoles are fed by two 50 Ω coaxial cables to achieve ±45° polarized radiation over wide frequency band, while four T-shaped slots cut in the arms produce operating bands. director employed located above enhance impedance matching further stabilize pattern at higher band. To pattern, baffles added along edge square...

This letter presents a dual-wideband dual-polarized magnetoelectric dipole (ME) antenna, which works at the prominent frequency bands of 1.7–2.7 GHz and 3.3–5.0 in Sub-6 GHz. A cross ME excites radiation, strip under embeds notched band from 2.7–3.3 Furthermore, patch above crossdipole metal baffle around ground improve wideband impedance matching stable radiation pattern. As result, prototype proposed antenna is fabricated measured. The measured results exhibit characteristics 1.66–2.6...

Strict symmetry limits the application of differential port (diff-port) magnetic field probing system (DMPS). Asymmetric calibration is very meaningful for DMPS. Ultrawindband asymmetric theory was first proposed and applied to electromagnetic measurement system. However, not clear DMPS because only concerned. This article proposes an ultrawideband method (UACM) The output voltage factor are redefined using UACM. Compared with previous method, based on a calibrator grounded coplanar...

This communication presents an ultrawideband dual-polarized antenna consisting of a main radiator, parasitic elements, and ground plane. The radiator is composed two pairs dual dipoles, which are cross-arranged fed by coplanar-strip lines in order to achieve <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\pm \mathrm{45}^{\circ }$ </tex-math></inline-formula> dual-polarization within wide frequency band....

A low-profile wideband antenna with extremely high isolation is proposed for in-band full-duplex applications. It designed in a coplanar structure periodic array of nonuniform metamaterial cells, hook-like feeding probe, and four mushroom-like structures. The cells are excited by probe to achieve horizontal polarization. Meanwhile, two slots at the end ground coupled microstrip feed lines vertical As result, leakage currents between symmetrical structures suppressed realize wide operation...