• Title, Summary, Keyword: Microstrip Patch Array Antenna

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The Design of microstrip line-probe feeding patch array antenna (마이크로스트립 라인-프로브 급전 패치 배열 안테나의 설계)

  • 박종렬;이윤경;윤현보
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
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    • pp.285-289
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    • 2002
  • In this paper, microstrip line-probe feeding patch array antenna with center frequency 5.8㎓ is designed and manufactured. The microstrip line - probe feeding structure has broadband characteristic and be able to modify the array structure for improving antenna gain. In this result, microstrip line-probe feeding patch array antenna has 17.6% bandwidth and 8㏈i antenna gain, respectively.

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Mecrostrip Array Antenna Directly Coupled to E-Plane (E-면으로 직접 결합된 마이크로스트립 어레이 안테나)

  • Kim, Tae-Hyung;Hong, Jae-Pyo;Pak, Chin-Taek;Cho, Young-Ki;Son, Hyon
    • Journal of the Korean Institute of Telematics and Electronics A
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    • v.28A no.1
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    • pp.23-29
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    • 1991
  • In order to improve the radiation characteristics of the microstrip antenna, microstrip array antenna consisting of one center patch fed by a coaxial probe and several patches directly coupled to the E-plane by microstrip line is analyzed. The equivalent circuit of the array antenna is represented by the conventional transmission line and the various parameters, such as the mdicrostrip line length, the patch length and the feed point location are calculated to improve the radiation pattern for 5-patch array antenna which has the equal patch width. The 5-patch array antenna with the radiation pattern which has low sidelobe level and narrow beam width is fabricated and then the measured results are compared with the computed values and the results of the single patch microstrip antenna too.

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The Design of $4{\times}4$ Microstrip Patch Array Antenna of K-Band for the High Gain (고이득 구현을 위한 K-밴드 $4{\times}4$ 마이크로스트립 패치 어레이 안테나의 설계)

  • Lee Ha-Young;Braunstein Jeffrey;Kim Hyeong-Seok
    • 한국정보통신설비학회:학술대회논문집
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    • pp.193-196
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    • 2006
  • In this paper, two $4{\times}4$ rectangular patch array antennas operated at 20 GHz are implemented for the satellite communication. Two $2{\times}2$ sub-arrays are designed and used for the design of $4{\times}4$ patch array. The sixteen patch antennas and microstrip feeding line are printed on the single-layered substrate. The spacing between the array elements is chosen to be $0.736{\lambda}$. The HPBW(Half Power Beam Width) of the $4{\times}4$ microstrip patch array is 17.01 degrees in the E-plane and 17.71 degrees in the H-plane with a gain of 11.6dB in the experimental results. The HPBW of the recessed $4{\times}4$ microstrip patch array is 18.66 degrees in E-plane and 17.12 degrees in the H-plane with a gain of 12.55dB in the experimental results.

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Design of beam tilting microstrip patch array antenna using H-plane coupling (H-면 결합을 이용한 빔 틸팅 마이크로스트립 패치 배열 안테나 설계)

  • 하재권;최성수;박동철
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
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    • pp.293-296
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    • 2002
  • In this paper, we proposed a beam tilting microstrip patch array antenna for the reception of satellite signals by using low cost copper etched polyester films and foams. The configuration and coupling mechanism of the proposed antenna are similar to the dipole Yagi-Uda antenna. It is composed of 3 layers of polyester films and three layers of foam. In order to prevent unwanted radiation and coupling loss by microstrip feeding networks and parasitic patches, a stacked layer with rectangular slots above the driver patch array is inserted. The 16${\times}$8 element microstrip Patch way antenna is Presented by experimental results. Its beam patterns are affected by many parameters such as sizes of the patches, gap between the patches. characteristics of the substrates, feeding method, etc. Owing to its complexities of various design parameters, both simulation and experiment were performed. The fabricated antenna received DBS signal from KOREASAT 3 by doing nothing but adjusting azimuth direction.

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The Design of a K-Band 4$\times$4 Microstrip Patch Array Antennas with High Directitvity (고지향성 구현을 갖는 K-밴드 4$\times$4 마이크로스트립 패치 어레이 안테나의 설계)

  • Lee, Ha-Young;Kim, Hyeong-Seok
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.56 no.1
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    • pp.161-166
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    • 2007
  • In this paper, two 4$\times$4 rectangular patch array antennas operating at 20 GHz are implemented for the satellite communication. The sixteen patch antennas and microstrip feeding line are printed on a single-layered substrate. The design goal is to achieve high directivity and gain by optimizing design parameters through permutations in element spacing. The spacing between the array elements is chosen to be 0.736$\lambda$. Numerical simulation results indicate that the HPBW(Half-Power Beam Width) of the 4$\times$4 patch array antenna is 18.78 degrees in the E-plane and 18.48 degrees in the H-plane with a gain of 17.18 dBi. Numerical simulations of a 4$\times$4 recessed patch array antenna yield a HPBW of 18.71 degrees in the E-plane and 17.82 degrees in the H-plane with a gain of 19.43 dBi.

Design and Fabrication of Right Hand Circular Polarization Microstrip Patch Array Antenna for Ka Band with Mono-Pulse Feed (모노펄스 급전 구조를 갖는 Ka 대역 우회선 원편파 마이크로스트립 패치 배열 안테나 설계 및 제작)

  • Bae, Ki-Hyoung
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
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    • pp.297-302
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    • 2005
  • Right hand circularly polarized Ka band microstrip patch array antenna was designed, manufacture and measurement were carried out. In order to lower axial ratio performance sequential rotation array technique was used. With mono-pulse feed There are sum and delta channel. Waveguide to microstrip transition was used. The 512 array antenna was performed which axial ratio is about 1.ldB in the half power beam width and also 1.ldB at the normal direction. Directivity gain of designed antenna is 32dB.

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A Broadband Microstrip Array Antenna for 3G Smart Antenna System Testbed

  • Rashid, Zainol Abidin Abdul;Islam, Mohammad Tariqul;Jiunn, Ng Kok
    • Journal of The Institute of Information and Telecommunication Facilities Engineering
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    • v.7 no.1
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    • pp.41-58
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    • 2007
  • A compact and broadband $4{\times}1$ array antenna was developed for 3G smart antenna system testbed. The $4{\times}1$ uniform linear array antenna was designed to operate at 1.885 to 2.2GHz with a total bandwidth of 315MHz. The array elements were based on the novel broadband L-probe fed inverted hybrid E-H (LIEH) shaped microstrip patch, which offers 22% size reduction to the conventional rectangular microstrip patch antenna. For steering the antenna beam, a commercial variable attenuator (KAT1D04SA002), a variable phase shifter (KPH350SC00) with four units each, and the corporate 4-ways Wilkinson power divider which was fabricated in-house were integrated to form the beamforming feed network. The developed antenna has an impedance bandwidth of 17.32% ($VSWR{\leq}1.5$), 21.78% ($VSWR{\leq}2$) with respect to center frequency 2.02GHz and with an achievable gain of 11.9dBi. The design antenna offer a broadband, compact and mobile solution for a 3G smart antenna testbed to fully characterized the IMT-2000 radio specifications and system performances.

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Microstrip Line Fed Rectangular Microstrip Patch Antenna and its Array (마이크로스트립 전송선으로 급전되는 사각형 마이크로스트립 패치 안테나 및 배열 안테나에 관한 해석 및 실험)

  • 박동국
    • Proceedings of the Optical Society of Korea Conference
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    • pp.152-156
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    • 1989
  • Parameters of a microstrip patch antenna such as the resonant frequency, radiation conductance, and the bandwidth are calculated. The rectangular microstrip patch antenna fed by a microstrip transmission line is fabricated and its resonant frequency, radiation pattern, and input voltage standing wave ratio are measured. The measured resonant frequency for 13.0mm$\times$9.7mm copper clad woven PTFE/glass laminate plate is 9.06Ghz, where the calculative is 9.00Ghz. And the measured vswr shows that the bandwidth of the antenna is 225MHz for vswr less then 2.0 which the calculated quality factor of the patch gives the bandwidth OF 280ghZ. The measured radiation pattern for 5 element as well as 4 element patch array shows less then 4dB deviation in the first side lobes from the designed values for both E and H plane pattern. This diviation is believed to be the power division errors of the power divider.

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A High-Gain Microstrip Patch Array Antenna Using a Superstrate Layer

  • Choi, Won-Kyu;Cho, Yong-Heui;Pyo, Cheol-Sik;Choi, Jae-Ick
    • ETRI Journal
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    • v.25 no.5
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    • pp.407-411
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    • 2003
  • A dielectric superstrate layer above a microstrip patch antenna has remarkable effects on its gain and resonant characteristics. This paper experimentally investigates the effect of a superstrate layer for high gain on microstrip patch antennas. We measured the gain of antennas with and without a superstrate and found that the gain of a single patch with a superstrate was enhanced by about 4 dBi over the one without a superstrate at 12 GHz. The impedance bandwidths of a single patch with and without a superstrate for VSWR < 2 were above 11%. The designed $2{\times}8$ array antenna using a superstrate had a high gain of over 22.5 dB and a wide impedance bandwidth of over 17%.

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A Broadband Microstrip Array Antenna for 3G Smart Antenna System Testbed

  • Rashid, Zainol Abidin Abdul;Islam, Mohammad Tariqul;Jiunn, Ng Kok
    • Journal of The Institute of Information and Telecommunication Facilities Engineering
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    • v.5 no.1
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    • pp.43-59
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    • 2006
  • A compact and broadband $4\times1$ array antenna was developed for 3G smart antenna system testbed. The $4\times1$ uniform linear away antenna was designed to operate at 1.885 to 2.2GHz with a total bandwidth of 315MHz. The array elements were based on the novel broadband L-probe fed inverted hybrid E-H (LIEH) shaped microstrip patch, which offers 22% size reduction to the conventional rectangular microstrip patch antenna. For steering the antenna beam, a commercial variable attenuator (KAT1D04SA002), a variable phase shifter (KPH350SC00) with four units each, and the corporate 4-ways Wilkinson power divider which was fabricated in-house were integrated to form the beamforming feed network. The developed antenna has an impedance bandwidth of 17.32% $(VSWR\leq1.5)$, 21.78% $(VSWR\leq2)$ with respect to center frequency 2.02GHz and with an achievable gain of 11.9dBi. The design antenna offer a broadband, compact and mobile solution for a 3G smart antenna testbed to fully characterized the IMT-2000 radio specifications and system performances.

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