A slot with variable coupling and its application to a linear array

Tang, R.

doi:10.1109/tap.1960.1144812

Cited by 34 publications

(15 citation statements)

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“…Such grating lobes may be eliminated by employing centered longitudinal slots. Special excitation ele ments, such as irises [4] or posts, are required to excite centered slots. We chose the conventional and predictable geometry shown in Figure 2 for simplicity.…”

Section: Array Architecturementioning

confidence: 99%

Waveguide-Slot Array Antenna Designs for Low-Average-Sidelobe Specifications

Rengarajan

Zawadzki

Hodges

2010

IEEE Antennas Propag. Mag.

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This paper discusses the design, analysis, and development of waveguide-fed planar slot arrays to achieve low-average side lobe specifications, as may arise in radiometer applications. Such antennas may be required to meet strict average sidelobe levels in different angular regions, and low average return loss over a specified bandwidth. In addition to Elliott's design technique, we used a Moment-Method analysis program, Ansoft's HFSS code, and results of tolerance studies using Monte Carlo simulations to meet the design objectives. Comparisons of simulated results and experimental results are also presented.

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Section: Array Architecturementioning

confidence: 99%

Waveguide-Slot Array Antenna Designs for Low-Average-Sidelobe Specifications

Rengarajan

Zawadzki

Hodges

2010

IEEE Antennas Propag. Mag.

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“…However it should be noted that all the research works, mentioned earlier, are concentrated on offset broad wall longitudinal waveguide slot radiator. Some attention also has been paid on the exploration of the possibilities and importance of centered broad wall longitudinal waveguide slot radiator in [10][11][12]. Centered longitudinal broad wall slots fed by L-shaped resonant irises were studied in [11].…”

Section: Introductionmentioning

confidence: 99%

“…Some attention also has been paid on the exploration of the possibilities and importance of centered broad wall longitudinal waveguide slot radiator in [10][11][12]. Centered longitudinal broad wall slots fed by L-shaped resonant irises were studied in [11]. This antenna array is disclosed in a article by R. Tang.…”

Section: Introductionmentioning

confidence: 99%

A novel virtually centered broad wall longitudinal slot for antenna application

Anand¹,

Das

2010

Int J RF and Microwave Comp Aid Eng

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A virtually centered broad-wall longitudinal slot antenna have been designed and studied using commercial Electromagnetic Simulation Software (CST Microwave Studio). The result obtained for the S 21 of such an antenna has been compared with the measured data to find the accuracy of the software. Also the results obtained for the slot have been compared with the more common offset broad-wall longitudinal slot. Different slot characteristics also have been studied by varying different slot parameters. V C 2010 Wiley Periodicals, Inc. Int J RF and Microwave CAE 20: 272-278, 2010.

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“…그러나 구형 도파관에서 비이격 LSS는   모 드의 전류 흐름을 방해할 수 없어서 자유공간으로 에너 지를 복사할 수 없다. 이러한 문제점을 해결하기 위해서 선행기술로서 비대칭 ⊔형 공진아이리스를 사용했다 [10] .…”

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Non-Offset Longitudinal Shunt Slot Exited by an Asymmetry Compound Iris

Kim¹,

Hong²,

Cho³

2016

The Journal of Korean Institute of Electromagnetic Engineering

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In this paper, a non-offset longitudinal shunt slot excited by an asymmetry compound iris on the broad wall of a rectangular waveguide is presented as an element for a waveguide slot-array antenna(WSAA). By properly adjusting the iris dimension, a resonance of the slot at a desired frequency can be achieved. The proposed resonant slot has some advantageous properties, such as a wide range of normalized resonant conductance, and minimum change of phase in the waveguide at the resonance. In addition, when the slots are arrayed for a waveguide slot antenna, the unwanted cross-polarization level can be reduced because each slot is placed in a straight line. A 8×1 WSAA with -20 dB side-lobe level(SLL) is designed, fabricated, and tested experimentally. The measured results are well agreed with the simulated ones and have an SLL of -18.13 dB and a cross-polarization level of -48.85 dB at 9.41 GHz, which was improved by about 15 dB of that of the conventional longitudinal slot array antenna.

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A slot with variable coupling and its application to a linear array

Cited by 34 publications

References 1 publication

Waveguide-Slot Array Antenna Designs for Low-Average-Sidelobe Specifications

Waveguide-Slot Array Antenna Designs for Low-Average-Sidelobe Specifications

A novel virtually centered broad wall longitudinal slot for antenna application

Non-Offset Longitudinal Shunt Slot Exited by an Asymmetry Compound Iris

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