Wideband Matching of Full-Wavelength Dipole With Reflector for Base Station

Ding, Can; Jones, Bevan; Guo, Y. Jay; Qin, Pei-Yuan

doi:10.1109/tap.2017.2738068

Cited by 39 publications

(26 citation statements)

References 19 publications

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“…Then the S1p file can be connected with ideal matching circuit based on filter design. This matching method described in [8] is an optimal way to match dipole antennas and is easy to be implemented on PCB. Future work will show how a cross-dipole with excellent performance are obtained following this design procedure.…”

Section: Discussion and Design Proceduresmentioning

confidence: 99%

A general design and optimization method of tightly-coupled cross-dipoles for base station

Ding¹,

Sun²,

Guo³

et al. 2018

12th European Conference on Antennas and Propagation (EuCAP 2018)

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This paper investigates the working mechanism of dual-polarized tightly-coupled cross-dipoles that are widely used in cellular base station applications. The effects of couplings between sub-dipoles on the performance indexes of concern are observed. A theory of considering this type of cross-dipole as an array is proposed and validated. The proposed theory explains why a stable radiation pattern can be achieved by this kind of structure. The array model can be used to guide the introduction and optimization of a simplified cross-dipole structure for base station application.

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Section: Discussion and Design Proceduresmentioning

confidence: 99%

A general design and optimization method of tightly-coupled cross-dipoles for base station

Ding¹,

Sun²,

Guo³

et al. 2018

12th European Conference on Antennas and Propagation (EuCAP 2018)

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“…4 is short-circuit at the centre frequency f 0 . Therefore, the CM signals are reflected completely at frequency f 0 , implying a transmission zero [36].…”

Section: Suppressionmentioning

confidence: 99%

Simple ladder‐like single‐layer balanced wideband phase shifter with wide phase shift range and appropriate common‐mode suppression

Alizadeh¹,

Shamsi

Tavakoli³

et al. 2020

IET Microwaves, Antennas & Propagation

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In this study, a single‐layer balanced wideband phase shifter with a wide phase shift range of 45°–315° and acceptable common‐mode (CM) suppression is proposed. The main branch has a simple ladder‐like structure and the reference branch utilises a coupling structure. The main branch electrical length is constant for any desired differential‐mode (DM) phase shift. Assuming a specific return loss (e.g. 16, 20, and 25 dB), the phase shifter is carefully analysed and a design procedure is given leading to an ultra‐low phase error design. Then by making a trade‐off between the CM and DM bandwidths at the cost of higher phase error, more design solutions for the phase shifter are given. To validate both the proposed structure as well as its design procedure, a balanced wideband phase shifter with the DM phase shift of 180°±4.2° (1.851–4.017 GHz) and the CM suppression of better than 15 dB (1.81–4 GHz) is fabricated, resulting in 73.82 and 75.25% fractional bandwidth, respectively. The fabricated balanced phase shifter has a return loss of ||S11dd<−14.87thinmathspacedB and insertion loss of ||S21dd>−0.95thinmathspacedB. The synthesised, simulated, and measured results are in good agreement with each other.

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“…The input impedance Z of each dipole is firstly transformed to 100 Ω (Zʹ) by an impedance matching circuit, and then connected in parallel to match to a standard 50-Ω coaxial cable. The impedance matching circuit for each dipole consists of two transmission lines (TL 1 and TL 2 ), and a wideband balun formed by one open line (OL) and one short line (SL), as suggested in [18]. The feed networks were implemented using the microstrip structure, as shown in Fig.…”

Section: The Planar Dual-linearly-polarized Antennamentioning

confidence: 99%

Wideband Planarized Dual-Linearly-Polarized Dipole Antenna and Its Integration for Dual-Circularly-Polarized Radiation

Sun

Zhu

Ding

et al. 2018

Antennas Wirel. Propag. Lett.

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A planarized dual-linearly-polarized (dual-LP) antenna and an integrated dual-circularly-polarized (dual-CP) antenna are proposed in this letter. For the dual-LP antenna, two groups of dipoles are fed by two balun-included feed networks to achieve ±45˚ polarizations. The feed networks and the radiators are printed on two sides of a substrate, forming a fully planar structure. Taking advantage of its planar configuration, the dual-LP antenna is further integrated with a wideband coupler to realize dual-CP radiation. The coupler is bent and squeezed into the space between the radiators and the reflector, leading to a compact structure. Both the dual-LP antenna and the dual-CP antenna have very stable radiation performances across a wide operating band > 66%.

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Wideband Matching of Full-Wavelength Dipole With Reflector for Base Station

Cited by 39 publications

References 19 publications

A general design and optimization method of tightly-coupled cross-dipoles for base station

A general design and optimization method of tightly-coupled cross-dipoles for base station

Simple ladder‐like single‐layer balanced wideband phase shifter with wide phase shift range and appropriate common‐mode suppression

Wideband Planarized Dual-Linearly-Polarized Dipole Antenna and Its Integration for Dual-Circularly-Polarized Radiation

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