Differential Dual-Band Antenna-in-Package With T-Shaped Slots

Wu, Hanwei; Zhang, Ji; Yan, Lianshan; Han, Liping; Yang, Rongcao; Zhang, Wenmei

doi:10.1109/lawp.2012.2228623

Cited by 25 publications

(19 citation statements)

References 7 publications

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“…The main techniques for generating a circular polarization with this type of aerial differ generally in the number of excitations that are considered: A simple excitation [1]- [5], a double excitation [6]- [9] and finally a quadruple excitation [16]- [17].…”

Section: Introductionmentioning

confidence: 99%

A New 30 GHz AMC/PRS RFID Reader Antenna with Circular Polarization

Necibi¹,

Guesmi²,

Gharsallah³

2017

ijacsa

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Abstract-The work on this guideline focus on the development and the design of a circularly polarized metallic EBG antenna fed by two microstrip lines. In order to achieve that purpose, a list of indicative specifications has been established, namely, obtaining an antenna operating from 29.5 to 30 GHz, with a high gain value, an ellipticity rate less than 3 dB and a secondary lobes less than -12 dB which is designed for Radio Frequency Identification (

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Section: Introductionmentioning

confidence: 99%

A New 30 GHz AMC/PRS RFID Reader Antenna with Circular Polarization

Necibi¹,

Guesmi²,

Gharsallah³

2017

ijacsa

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show abstract

“…Moreover, there is increasing interest in antennas with differential signal operation recently [12][13][14][15][16]. This is because the differential signal operation is more suitable for radio frequency integrated circuits [12].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, single-ended antennas and baluns which convert differential signals to single-ended signals can be replaced merely by differentially-driven antennas. Thus loss on chip baluns can be decreased, and better polarization purity is observed [14,15]. For example, a differential dual-band antenna is introduced in [14], and dual bands are achieved by multilayer structure.…”

Section: Introductionmentioning

confidence: 99%

“…Thus loss on chip baluns can be decreased, and better polarization purity is observed [14,15]. For example, a differential dual-band antenna is introduced in [14], and dual bands are achieved by multilayer structure. Another differentially-driven dual-polarized antenna is proposed in [15], and its cross-polarization level is very low due to the differentially-driven scheme.…”

Section: Introductionmentioning

confidence: 99%

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Dual-Band Circularly Polarized Antenna With Differential Feeding

Wu¹,

Yin²,

Wang³

et al. 2014

PIER C

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Abstract-A dual-band circularly polarized antenna is presented in this paper. A rectangular patch antenna with gap-feeding structure is firstly designed, and 3-dB axial-ratio bandwidth from 2.35 to 2.48 GHz is obtained. A parasitic square ring is placed on the rear of the rectangular patch as a band-notch unit operating around 2.4 GHz. Then an original wide circularly polarized band is split into two bands from 2.25 to 2.31 GHz and from 2.46 to 2.53 GHz. By adopting differential feeding, symmetrical patterns are achieved. Measurement results show that two 3-dB axial-ratio bands of 2.6% (2.25-2.31 GHz) and 2.0% (2.51-2.56 GHz) are obtained with a small frequency ratio of 1.11.

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“…It is found that higher-order mode can be suppressed greatly when the antenna is symmetrically driven using differential feeding systems [7]. Hence, in this Letter, a compact differential-fed microstrip antenna is presented for UWB applications.…”

mentioning

confidence: 99%

Differential‐fed UWB microstrip antenna with improved radiation patterns

Wang

Yin

2014

Electron. lett.

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A differential-fed microstrip antenna, which is characterised with an ultra-wideband (UWB) of 120% (3-12 GHz), improved radiation patterns, stable gains and compact size, is proposed. Two symmetrical trapezoid-shaped slots and four triangle-cut corners on the ground are used to improve the impedance matching over the UWB frequency band. To clarify the improved radiation characteristics, the simulated 3D radiation patterns of the proposed antenna are also shown. The measured results show that, in the entire frequency band, the designed antenna exhibits a stable radiation pattern and the gain variation is < 2.5 dB. Furthermore, the polarisation purity is increased compared with the conventional ones, especially in the high-frequency band.Introduction: Since the Federal Communication Commission (FCC) released the frequency band 3.1-10.6 GHz for commercial ultrawideband (UWB) systems, both industry and academia have conducted tremendous efforts on the UWB radio technology. As an important component of the communication system, the UWB antenna is required to have a simple structure, wide impedance bandwidth, easy integration, stable radiation patterns, constant gain and so on. Planar monopole antennas, as one of the most attractive candidates for UWB antennas, have recently been paid more attention due to their small size and easy integration. So far, various single-ended feed planar UWB antennas have been presented [1][2][3]. Although this type of antenna can be matched over the entire UWB bandwidth with ease, there exists a common deficiency of deterioration of radiation pattern. The radiation patterns of these antennas may deviate from the broadside direction at high frequencies (above 9 GHz), which may cause problems for the applications that require a stable radiation pattern. To alleviate this problem, several techniques have been proposed to improve the radiation pattern of the UWB antenna [4][5][6]. However, although the radiation pattern in the upper frequency band has improved to some extent, the cross-polarisation of the antennas is in high level in the H-plane, and the polarisation purity still needs to be improved.To reduce the cross-polarisation, which is caused by the transverse currents of higher-order mode, some efforts have been made by the researchers. It is found that higher-order mode can be suppressed greatly when the antenna is symmetrically driven using differential feeding systems [7]. Hence, in this Letter, a compact differential-fed microstrip antenna is presented for UWB applications. Furthermore, owing to the differential feeding technique, the balun is not needed when the antenna is driven using differential signals. More importantly, over the entire UWB band, the proposed antenna presents stable omnidirectional radiation patterns in the H-plane, compared to dipole-like radiation patterns in the E-plane. By employing the differential feeding systems, the crosspolarisation level is kept low over the whole operating frequencies, which result in high polarisation purity of the antenna.

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Differential Dual-Band Antenna-in-Package With T-Shaped Slots

Cited by 25 publications

References 7 publications

A New 30 GHz AMC/PRS RFID Reader Antenna with Circular Polarization

A New 30 GHz AMC/PRS RFID Reader Antenna with Circular Polarization

Dual-Band Circularly Polarized Antenna With Differential Feeding

Differential‐fed UWB microstrip antenna with improved radiation patterns

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