• Title/Summary/Keyword: dual-band antenna

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A Dual-Band Gap-Filler Antenna Design with a Phi-Shaped Slot

  • Park, Sang Yong;Park, Jong Kweon
    • Journal of electromagnetic engineering and science
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    • v.15 no.2
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    • pp.111-114
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    • 2015
  • In this paper, we have proposed dual-band Phi-shaped slot gap filler antenna for satellite internet service applications. Some properties of the antenna such as return loss, radiation pattern, and gain have been simulated and measured. The proposed antenna has a Phi-shaped slot on the circular patch and is fabricated on the TLX-9 substrate. The radius of the circular patch is 25 mm, and it has a coaxial feeding structure. The dual-band Phi-shaped slot gap filler antenna has high-gain, small-size, simple-structure, and good radiation patterns at each band. The operating frequency band can be tuned by adjusting the length AL and FL of the Phi-shaped slot.

Design of Dual-Band MIMO Antenna with High Isolation for WLAN Mobile Terminal

  • Lee, Jung-Nam;Lee, Kwang-Chun;Park, Nam-Hoon;Park, Jong-Kweon
    • ETRI Journal
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    • v.35 no.2
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    • pp.177-187
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    • 2013
  • In this paper, we propose a dual-band multiple-input multiple-output (MIMO) antenna with high isolation for WLAN applications (2.45 GHz and 5.2 GHz). The proposed antenna is composed of a mobile communication terminal board, eight radiators, a coaxial feed line, and slots for isolation. The measured -10 dB impedance bandwidths are 10.1% (2.35 GHz to 2.6 GHz) and 3.85% (5.1 GHz to 5.3 GHz) at each frequency band. The proposed four-element MIMO antenna has an isolation of better than 35 dB at 2.45 GHz and 45 dB at 5.2 GHz between each element. The antenna gain is 3.2 dBi at 2.45 GHz and 4.2 dBi at 5.2 GHz.

Dual Band Dipole Antenna with Tapered Microstrip Balun for WLAN Access Point (무선랜 AP(Access Point)용 테이퍼형 마이크로스립 발룬 구조 이중대역 다이폴 안테나)

  • Kim, Joung-Myoun;Kim, Jeong-Li;Yun, Je-Hoon;Kim, Nam
    • Proceedings of the IEEK Conference
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    • pp.219-220
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    • 2006
  • In this paper, we designed and implemented the Dual Band Dipole Antenna with Tapered Microstrip Balun for WLAN Access Point. Two dipole antennas with different resonant frequency and the antenna structure combined additional line were implemented for dual band performance. In order to feed the balun current, the tapered microstrip balun was used. Produced the Dual Band Antenna shows a special quality. The quality is that all VSWR is less than 1.5 in the 2.4GHz and 5GHz frequency bands in 802.11 standards, and it profits not less than 1.7dBi having typical Dipole Antenna pattern the very "a form of 8"pattern and Omni-directional pattern.

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Design a Dual-band Microstrip Antenna using Slots (슬롯을 이용한 이중 대역 마이크로스트립 안테나 설계)

  • Ko, Hyun-Jung;Kim, Won-Kyu;Shin, Jae-Cheol;Lee, Hak-Yong;Chung, Young-Seek;Cheon, Chang-Yul
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.58 no.10
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    • pp.2016-2021
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    • 2009
  • In this paper, a dual-band antenna aimed for a mobile communication repeater was designed and measured. The operating frequency ranges are GSM(870${\sim}$960 MHz) and WCDMA(1920${\sim}$2170 MHz) bands. Experimental and numerical studies are performed for various design variables such as slot lengths. Using two meandering slots in the ground plane, we can obtain two higher resonant frequencies significantly with broader bandwidths. The measured maximum gain of antenna is 2 dBi in the GSM band and 2.45 dBi in the WCDMA band.

Design a dual-band antenna for GSM/WCDMA (GSM/WCDMA 이중대역 안테나 설계)

  • Ko, Hyun-Jung;Kim, Won-Kyu;Lee, Vea-O;Shin, Jae-Cheol;Lee, Hak-Yong;Chung, Young-Seek;Cheon, Chang-Yul
    • 한국정보통신설비학회:학술대회논문집
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    • pp.433-436
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    • 2008
  • In this paper, a novel compact broadband dual frequency microstrip antenna is presented. The meander type patch has been designed to have dual resonant frequencies, and the ground with slot was employed to expand the bandwidth in WCDMA band. The simulated results were obtained using HFSS, and the measurement on the proposed antenna was conducted in an anechoic chamber equipped with a network analyzer and a far field measurement system. As a result, measured maximum gain of antenna is 2.07$\sim$2.87 dBi in the GSM band and 3.91$\sim$5.61 dBi in the WCDMA band.

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Design of microstrip antenna for Dual-band applications (이중대역용 마이크로스트립 안테나 설계)

  • Park, Sea-Pil;Kim, Kab-Ki
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.12 no.5
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    • pp.213-217
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    • 2012
  • In this paper, we design dual-band microstrip antenna for IEEE 802.16e mobile WiMAX standard IEEE 802.11 WLAN band at the same time. To solve interference at the desired operating frequency band, impedance matching is improved and simple production method showed the characteristics of the omni-directional and compact size. The proposed structure is considered to bring the effect of the installation costs, and show the antenna for dual-band communication.

Design of Dual Band Microstrip H-shaped Patch Antenna using Shorting Pin (단락핀을 이용한 이중대역 마이크로스트립 H형 패치 안테나 설계)

  • Chang, Se-Wook;Ko, Jae-Hyeong;Kim, Hyeong-Seok
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.57 no.10
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    • pp.1835-1840
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    • 2008
  • In this paper, a dual band H-shaped microstrip patch antenna is designed for RFID application. Using shorting pin and H shaped for dual resonators and control dual frequency independently. The antenna shows a good performance at the frequency, 912MHz and 2.45GHz for the radiation characteristic and input impedance matching, as well. The reflection is lower than -10dB and a good directivity higher than 3dB is achieved for both frequency.

Dual band antenna for RFID application of 433MHz and 2.45GHz (RFID에 적용 가능한 433MHz, 2.45GHz 이중대역 안테나)

  • Chang, Se-Wook;Ko, Jae-Hyung;Choi, Jin-Kyu;Kim, Hyeong-Seok
    • Proceedings of the KIEE Conference
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    • pp.157-158
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    • 2008
  • In this paper, a dual band microstrip patch Antenna is designed for RFID Application. The antenna shows a good performance at the frequencys, 433MHz and 2.45GHz for the radiation characteristics and input impedance matching as well. The reflection factor is lower than 15dB and a good directivity higher than 3dB is achieved for both frequency.

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Microwave Properties of Ag Conducting Paste with Various Preparation Conditions (Ag가 함유된 전도성 도료의 제조 조건에 따른 고주파 특성)

  • Park, Sang-Hoon;Kim, Jeong-Pyo;Seong, Won-Mo
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.18 no.9
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    • pp.827-832
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    • 2005
  • Dual band internal antennas were fabricated with Ag conducting paste of various preparation conditions and different print thickness by silk screen print. We have investigated microwave properties were compared Ag conducting paste antenna with copperplate antenna at 800 MHz and 1,800 MHz. Gain of Ag conducting paste antenna was improved when preparation conditions were the single size Ag particle, using dry type resin and high Ag containing percent. However, it was lower than that of copperplate antenna within $0.1\~2.0dBi$ at 800MHz. In addition, it was improved at 800MHz when thickness of Ag conducting paste was printed more than skin depth but it was held after critical print thickness. On the other hand, it was reached level of copperplate antenna at 1,800MHz.