DIAGONAL HORN GAUSSIAN EFFICIENCY ENHANCEMENT BY DIELECTRIC LOADING FOR SUBMILLIMETER WAVE APPLICATION AT 150 GHz

Xu, Ou

doi:10.2528/pier10120603

Cited by 11 publications

(9 citation statements)

References 24 publications

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“…Thus, the requirements of the communication systems and terminals are very severe, as it can be easily seen in the literature [5][6][7][8][9]. The severe requirements usually imply the use of higher and higher working frequencies, such as microwave or even millimeter band [10,11]. One important issue related to the radiating terminals is its proper and accurate characterization [12] and one usual problem is the accurate determination of the radiation pattern and the phase center of the antenna.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Different Methods for the Experimental Antenna Phase Center Determination Using a Planar Acquisition System

Torre¹,

Fernández-González²,

Padilla³

et al. 2013

PIER

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Abstract-This work provides the comparison of different methods for the experimental determination of the phase center location of an antenna. The phase center position is determined by means of measured data obtained with a planar scanning system and computed with different methods: a least-squares fit method with and without weighting coefficients and a directivity-based plane wave spectrum (PWS) analysis method. A study of the phase center position for different microwave antennas is provided. The results of the different methods are presented and compared, along with the confidence interval of the phase center values due to the uncertainties of the acquisition system.

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Section: Introductionmentioning

confidence: 99%

Comparison of Different Methods for the Experimental Antenna Phase Center Determination Using a Planar Acquisition System

Torre¹,

Fernández-González²,

Padilla³

et al. 2013

PIER

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“…Within this range, a considerable research effort is currently concentrated on technological developments aiming to improve characteristics and performance of devices for emitter and receiver systems. A very important number of comprehensive reviews [1,2] on the state-of-the-art of THz technology [3][4][5] can be found in the literature . A non-exhaustive list of applications includes astronomy [6], security scanning [7], explosives detection [8], medical imaging and biology [9,10] and atmospheric remote sensing [11].…”

Section: Introductionmentioning

confidence: 99%

Atmospheric Propagation at 100 and 300 Ghz: Assessment of a Method to Identify Rainy Conditions During Radiosoundings

Soria¹,

Riera²,

Garcia‐del‐Pino³

et al. 2012

PIER

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Abstract-The influence of atmospheric gases and tropospheric phenomena becomes more relevant at frequencies within the THz band (100 GHz to 10 THz), severely affecting the propagation conditions. The use of radiosoundings in propagation studies is a well established measurement technique in order to collect information about the vertical structure of the atmosphere, from which gaseous and cloud attenuation can be estimated with the use of propagation models. However, some of these prediction models are not suitable to be used under rainy conditions. In the present study, a method to identify the presence of rainy conditions during radiosoundings is introduced, with the aim of filtering out these events from yearly statistics of predicted atmospheric attenuation. The detection procedure is based on the analysis of a set of parameters, some of them extracted from synoptical observations of weather (SYNOP reports) and other derived from radiosonde observations (RAOBs). The performance of the method has been evaluated under different climatic conditions, corresponding to three locations in Spain, where colocated rain gauge data were available. Rain events detected by the method have been compared with those precipitations identified by the rain gauge. The pertinence of the method is discussed on the basis of an analysis of cumulative distributions of total attenuation at 100 and 300 GHz. This study demonstrates that the proposed method can be useful to identify events probably associated to rainy conditions. Hence, it can be considered as a suitable algorithm in order to filter out this kind of events from annual attenuation statistics.

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“…Hence, the confinement of power in a region of air by non-conducting materials may decrease noticeably the attenuation of the waveguide. The resulting structure may be specially useful in highly sensitive applications [13], in the design of horn antennas with an enhanced efficiency [14] or in near-field probing systems [15].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the E-Plane Loaded Rectangular Waveguide for Low-Loss Propagation

Sánchez‐Escuderos¹,

Ferrando‐Bataller²,

Herranz³

et al. 2013

PIER

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Abstract-The insertion of vertical slabs in a metallic rectangular waveguide distorts the power distribution of the waveguide, producing new modes and modifying the existing ones. The resulting waveguide, known as E-plane loaded rectangular waveguide, is studied in this paper, focusing the attention on the TE-type modes in a symmetrical case. A quasi-TE 10 is found which may confine the energy in the central air region by suitably choosing the dielectric slabs' dimensions. An algorithm to optimize these dimensions is proposed in order to maximize the confinement of power in the air region and minimize the attenuation of the mode. This minimization is specially important at high frequencies, where the ohmic losses and the dielectric absorption become extremely high. This paper includes an example at THz frequencies and presents the design of several devices using the E-plane loaded rectangular waveguide.

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DIAGONAL HORN GAUSSIAN EFFICIENCY ENHANCEMENT BY DIELECTRIC LOADING FOR SUBMILLIMETER WAVE APPLICATION AT 150 GHz

Cited by 11 publications

References 24 publications

Comparison of Different Methods for the Experimental Antenna Phase Center Determination Using a Planar Acquisition System

Comparison of Different Methods for the Experimental Antenna Phase Center Determination Using a Planar Acquisition System

Atmospheric Propagation at 100 and 300 Ghz: Assessment of a Method to Identify Rainy Conditions During Radiosoundings

Optimization of the E-Plane Loaded Rectangular Waveguide for Low-Loss Propagation

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