Broadband waveguide slot array for SAR

Zhao, Han-Jun; Xu, Rongrong; Wu, Wen

doi:10.1049/el.2010.3009

Cited by 27 publications

(11 citation statements)

References 5 publications

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“…3. To obtain a wider bandwidth and appropriate radiation in the array, elliptical slots have been used [7]. The antenna is simulated using time domain solver of CST.…”

Section: Ridge Gap Waveguide Designmentioning

confidence: 99%

2D slot array antenna in ridge gap waveguide technology

Ramezan

Khaleghi

2014

The 8th European Conference on Antennas and Propagation (EuCAP 2014)

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this paper describes a new design of a two dimensional slot antenna array on ridge gap waveguide (RGW) technology. The designed antenna operated in Ku frequency band at 13.5 GHz with a bandwidth of about 800 MHz. The antenna consists of an RGW power divider and two branches transmission lines which feed a series of two parallel slots. The slots are elliptical shaped that provided wide impedance matching. The antenna characteristics, including return loss, radiation patter and efficiency are presented.

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“…3. To obtain a wider bandwidth and appropriate radiation in the array, elliptical slots have been used [7]. The antenna is simulated using time domain solver of CST.…”

Section: Ridge Gap Waveguide Designmentioning

confidence: 99%

2D slot array antenna in ridge gap waveguide technology

Ramezan

Khaleghi

2014

The 8th European Conference on Antennas and Propagation (EuCAP 2014)

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“…The IF phase shifting is implemented in this research because it can provide much better performance compared to RF and LO phase shifting [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. The slotted waveguide antenna array is selected because it can provide high power handling capability, low loss, small size, narrow beamwidth, good bandwidth, and high gain [15][16][17][18][19][20][21][22][23][24][25]. This paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

Design and simulation of an analog beamforming phased array antenna

Elhefnawy

2020

IJECE

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In this paper, a phased array antenna is designed and simulated. The antenna array consists of four circularly polarized slotted waveguide elements. The antenna array is simulated using CST MWS. The simulation results for the proposed antenna array at different values of progressive phase shift demonstrate that the S‒parameters for all four ports are less than ‒10 dB over at least 2% bandwidth, the simulated maximum gain is 13.95 dB, the simulated beamwidth can be 19˚ or narrower based on the value of the progressive phase shift. , the range of frequencies over which the simulated Axial Ratio (AR) is below 3 dB is not fixed and varied according to the selected progressive phase shift. The proposed four-element RF front-end is simulated using Advanced Design System (ADS) at operating frequency of 9.6 GHz. The obtained simulation results by ADS indicate the feasibility of implementing the proposed RF-front end for feeding the antenna array to realize analog beamforming.

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“…Due to the desirable advantages, such as high radiation gain, low loss, high power handling capacity, and simple feeding, waveguide slot antennas have been widely used in modern telecommunication systems [1]. Various slot antennas based on annular [2], cylindrical [3], and rectangular waveguides [4] have been reported in open literature. However, such reported antennas suffer from intrinsically narrow operation bandwidth duo to only a single radiation mode excited and employed, which will restrict their applications in the high data-rate wireless communication systems.…”

Section: Introductionmentioning

confidence: 99%

A 3-D Printed Spherical Antenna With Bandwidth Enhancement Under Operation of Dual Resonance

Zhu

Zhang

et al. 2020

IEEE Access

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In this paper, a three-dimensional (3-D) printed spherical antenna with bandwidth enhancement under the operation of TM 101 and TM 211 modes is presented. The antenna is started from a metallized spherical cavity with a rectangular feed waveguide. Then, some slots are suitably introduced on its sidewall. With the help of these introduced slots, two resonant modes (TM 101 and TM 211) can be excited simultaneously and merged with each other, resulting in a wideband radiation characteristic with two resonances. An antenna prototype operating at X and Ku bands is designed and implemented as proof of concept. The antenna is additively manufactured by incorporating polymer-based stereolithography and electroless copper plating techniques. Measured results show that the antenna not only owns a wide impedance bandwidth of 40.9% from 9.77 to 14.81 GHz, but also maintains stable radiation patterns over the operating band. Besides, the measured average gain is as high as 10.1 dBi. As the measured results are in good agreement with the simulated ones, a simple and effective design of 3-D printed wideband spherical antenna with high radiation performances is verified. INDEX TERMS Spherical antenna, 3-D printed, waveguide-fed, wideband antenna.

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Broadband waveguide slot array for SAR

Cited by 27 publications

References 5 publications

2D slot array antenna in ridge gap waveguide technology

2D slot array antenna in ridge gap waveguide technology

Design and simulation of an analog beamforming phased array antenna

A 3-D Printed Spherical Antenna With Bandwidth Enhancement Under Operation of Dual Resonance

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