• Title/Summary/Keyword: 평면 배열

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A Study on the Derivation of isoflux Radiation Characteristics of Planar Array Antenna for CubeSAT (큐브위성용 평면배열안테나의 isoflux 방사특성 유도에 관한 연구)

  • Jung, Jinwoo;Pyo, Seongmin
    • Journal of IKEEE
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    • v.24 no.3
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    • pp.917-920
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    • 2020
  • In this paper, we studied the derivation method of isoflux radiation for a planar array antenna. The presented array antenna was designed for considering of 1U-sized CubeSAT with Ku-band communications. For the presented array antenna, 8×8 radiating elements were arranged, and the distance between radiating elements was set of half-wavelength. The excited current weighting for each radiating elements was calculated by the signal processing technique used in the design of the low-pass filter. As a result of analysis of the method proposed in this paper, it was confirmed that a seamless isoflux pattern can be derived.

A Study on the Beam forming method suitable receive area shape using planar array antenna (평면 배열 안테나를 이용한 수선 지역 형태에 적합한 빔 형성 방법에 관한 연구)

  • 이봉수;장재철;안도희
    • Journal of the Korea Society of Computer and Information
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    • v.8 no.1
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    • pp.90-96
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    • 2003
  • In this paper, arranged the isotropic point source of N number with the structure which is identical with the receive area. And against the array structure which has the radiation pattern which is identical with the receive area it researched. The arranged the element space flees grating lobe and in order to set the characteristic of optimum with half-wave equally space it selects. After inducing the array factor of each array structure, it calculated a radiation pattern. As a result of, the radiation pattern of the each Planar array antenna with structure of the receive area was similar and the possibility of getting an beam characteristic it was.

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Radiation Characteristics of an E-plane Linear Array Antenna Composed of Inductive Loaded Patch Antennas (Inductive loaded 마이크로스트립 패치 안테나를 이용한 E-평면 선형 배열 안테나의 방사 특성)

  • Yoon, Young-Min;Kwak, Eun-Hyuk;Kim, Jae-Hyun;Kim, Boo-Gyoun
    • Journal of the Institute of Electronics and Information Engineers
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    • v.50 no.7
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    • pp.59-67
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    • 2013
  • The radiation characteristics of an E-plane linear array antenna composed of inductive loaded patch antennas (ILPAs) are investigated. The radiation characteristics of an ILP array antenna are significantly improved compared to those of a conventional array antenna because the mutual coupling of an ILP array antenna is very small. The patch length of a $5{\times}2$ ILPA for the enhancement of the radiation characteristics of a 5-element E-plane linear array antenna composed of ILPAs is presented.

Mutual Coupling Characteristics of a 2-element Array Antenna using Inductor Loaded Patch Antennas (Inductor Loaded 패치안테나를 이용한 2 소자 배열 안테나의 상호결합 특성)

  • Kim, Gun-Su;Kim, Tae-Young;Yoon, Young-Min;Kim, Boo-Gyoun
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.48 no.4
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    • pp.92-99
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    • 2011
  • Effect of a finite grounded substrate on mutual coupling characteristics of a 2-element array antenna using inductor loaded patch antennas is investigated. The mutual coupling characteristics of a 2-element array antenna using inductor loaded patch antennas positioned along the E-plane are compared with those positioned along the H-plane. The magnitude of mutual coupling is very small and the distance between the center of element and the substrate edge on the E-plane for the minimum mutual coupling is similar regardless of the direction at which antenna elements are positioned in the case of a 2-element array antenna using inductor loaded patch antennas.

Radiation power estimation for the planar array acoustic sensor considering mutual coupling effects (상호간섭영향을 고려한 평면배열형 음향센서의 방사출력 예측)

  • Lee, Jong-Kil;Seo, In-Chang
    • Journal of Institute of Control, Robotics and Systems
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    • v.2 no.3
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    • pp.194-199
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    • 1996
  • 평면 배열형 소나 센서에서는 트랜스듀서 상호간의 간섭효과들이 음을 방사하는 각각의 트랜스듀서 및 평면 배열의 빔패턴에 영향을 주게된다. 따라서 음향 방사출력의 계산은 소나용 트랜스듀서의 성능및 효율을 평가하는데 필수적이다. 음향 방사출력을 예측하기 위하여 무한 강성 배플에 고정된 수개의 트랜스듀서를 이론해석의 대상으로 설정하였다. 각 트랜스듀서는 자기방사 임피던스 및 상호방사 임피던스로 구성되어 있으며 이것의 총 방사 임피던스 및 음향반사 출력의 추출은 등가 전기회로 모델을 이용하였다. 이론및 수치해석의 결과에 근거하여 음향방사 출력은 각 트랜스듀서 상호간의 간섭의 양에 의존함을 보였으며 상호간섭에 의한 음향출력 손실은 25.05%에서 최고 51.52%정도임을 확인하였다.

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Effect of the Pin Radius on the Radiation Characteristics of a Patch Antenna with an Array of Pins Interconnecting the Patch and the Ground (패치와 접지면 사이에 삽입된 핀 배열을 가지는 안테나의 방사특성에 핀 반경이 미치는 효과)

  • Lee, Woo-Ram;Kim, Tae-Young;Kim, Boo-Gyoun;Shin, Jong-Dug
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.45 no.10
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    • pp.80-89
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    • 2008
  • Patch antennas with an array of pins interconnecting the patch and the ground (Pin array patch antennas) are fabricated and their characteristics are measured. The radiation characteristics of pin array patch antennas are compared to those of conventional patch antennas. The suppressions of the radiation in horizontal directions in E-plane and H-plane are more than 10 dB and 4 dB, respectively. The forward radiation is increased, while the backward radiation is decreased. The directivity is improved because the half-power beamwidth of radiation patterns in both E-plane and H-plane is reduced. The resonance frequency of a pin array patch antenna increases as the pin radius of a pin amy patch antenna increases. An optimum pin radius of a pin array patch antenna exists for the maximum suppression of the radiation in horizontal directions.

A Multibeam Pattern Synthesis of Planar Array Antenna (평면 배열 안테나에 의한 다중 빔 복사 패턴의 합성)

  • Hur, Moon-Man;Lee, In-Jae;Yoon, Hyun-Bo
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.17 no.10 s.113
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    • pp.1007-1019
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    • 2006
  • In this paper, the synthesis method of multibeam radiation pattern with multi-directional beams and nulls is proposed. Genetic algorithm is applied for the optimization of amplitude and phase of the feeding signal into each element that is structured in planar array of single patch antenna with an arbitrary field distribution. To verify the validity of the proposed method, $2{\times}2$ planar array antenna is used for the measurement and the measured far field radiation pattern is compared with the simulation result. As a result, the synthesis of multibeam radiation pattern is implemented by the optimization of amplitude and phase of the feeding signal into each element of $8{\times}8$ planar array antenna system.

A study on the reduction of crosstalk in a two-dimensional planar array of underwater acoustic transducers (2차원 평면배열 수중 음향 트랜스듀서 내 상호간섭 저감 방안 연구)

  • Park, Haejune;Roh, Yongrae
    • The Journal of the Acoustical Society of Korea
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    • v.35 no.5
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    • pp.349-357
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    • 2016
  • In this work, we proposed various structural methods to reduce the crosstalk between elements in a planar array of underwater acoustic transducers and investigated the efficacy of each method through finite element analysis. It is shown that the effects of crosstalk reduction increase as the depth of the kerf among elements and the width of the kerf increase, and the elastic stiffness of the kerf filler decreases. Results of this study are expected to be useful in designing the structure of underwater acoustic planar array transducers to maximize their performance.

Performance Analysis of AOA Estimation for Concentric Ring Array Antenna in Beamforming Satellite System (빔형성 위성 시스템의 동심원 배열 안테나에 대한 도래각 추정 성능 분석)

  • Kim, Tae-Yun;Lee, Dongbin;Hwang, Suk-Seung
    • The Journal of the Korea institute of electronic communication sciences
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    • v.15 no.4
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    • pp.643-650
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    • 2020
  • The phased array antenna has an advantage enabling rapid beam aim without the mechanical rotation of the antenna, because it arranges multiple elements in a linear or planer (grid or circular) and electronically controls the phase for each element. The planar array antenna is generally used a grid array and a circular array, and the circular form has the higher resolution comparing to the grid form due to the its structural characteristics. However, a concentric circular array (CCA) or a concentric ring array (CRA) with multiple circular arrays which each has different radius is used in the limited area, because the entire radius should be increased for the circular array with a number of elements. In this paper, we introduce the angle-of-arrival (AOA) estimator for an adaptive beamforming satellite system based on CRA and provide the simulation results for performance evaluation. In addition, simulation results are compared and analyzed to the case for the circular array antenna.

STUDY ON THE OPTIMAL PLANAR ARRAY STRUCTURE WITH TRIANGULAR LATTICE FOR SIDE-LOBE REDUCTION (삼각 격자구조를 갖는 평면배열 안테나의 부엽 레벨 감소를 위한 최적 평면배열 형상에 관한 연구)

  • 배지훈;성낙선;이태윤;김종면;표철식
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
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    • 2002.11a
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    • pp.250-254
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    • 2002
  • In this paper, we design an optimized planar array structure with triangular lattice for side-lobe reduction using a genetic algorithm. A constraint optimization is implemented by optimally removing some outer array elements far from the array center. It is shown that only the proper array shape without optimizing the magnitudes and phases of each array antenna can give low side-lobe level with a slight main beam broadening.

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