Design of Shaped Beam Planar Arrays of Waveguide Longitudinal Slots

Casula, Giovanni Andrea; Mazzarella, Giuseppe; Montisci, Giorgio

doi:10.1155/2013/767342

Cited by 23 publications

(8 citation statements)

References 32 publications

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“…However, their relatively high cost and difficult integration prevent them from being used in low-cost, high-volume applications. In addition, the traditional waveguide technique cannot be used to reduce the weight and volume [1][2][3]. The concept of substrate integrated waveguide (SIW) technology makes it possible to realise the waveguide in a substrate and provides a sophisticated way to integrate the waveguide with microwave planar circuits using the conventional low-cost printed circuit technology.…”

Section: Introductionmentioning

confidence: 99%

Edge‐radiating slot antenna based on half‐mode substrate integrated waveguide

Xiong¹,

Tong

He³

et al. 2017

IET Microwaves, Antennas & Propagation

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Lots of substrate integrated waveguide (SIW) slot antennas appear to satisfy the extensive and intensive growth of wireless communication systems. However, there were few reports about edge‐radiating slot antenna based on SIW technology. In this study, a half‐mode SIW (HMSIW) edge‐radiating slot antenna is proposed for the first time by etching transversal slots both on the upper and lower surfaces of HMSIW. The radiation field of this antenna has been deduced from the field distribution of HMSIW. A 6‐slot‐pair antenna worked at 3.0 GHz with gain of 5.8 dBi is obtained by regulating the size and the number of slots. Through setting matching posts and a terminal load, the bandwidth can be expanded from 2 to 9.7%. The measured results show that the matching‐type antenna has radiation efficiency about 0.59, beam directions ranging from 0° to 53° and gains within 5.0–7.5 dBi in 3.05–3.35 GHz. This antenna has advantages of low profile, easy fabrication, wide bandwidth and frequency‐scanning property, which are great for microwave radar applications.

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Section: Introductionmentioning

confidence: 99%

Edge‐radiating slot antenna based on half‐mode substrate integrated waveguide

Xiong¹,

Tong

He³

et al. 2017

IET Microwaves, Antennas & Propagation

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show abstract

“…The device was simulated using Ansys HFSS, a finite element method commercial software, particularly suited for the simulation and design of waveguide structures and antennas [20]. Very good agreement with experimental measurements [21] was found, even at millimeter wave frequencies [22][23][24].…”

Section: Resultsmentioning

confidence: 99%

A Compact In-Line Waveguide-to-Microstrip Transition in the Q-Band for Radio Astronomy Applications

et al. 2018

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Abstract:A microstrip-to-waveguide transition has been realized for radio astronomy applications, designed to operate in the Q-band (33-50 GHz). As part of an array radio frequency (RF) receiver, the main requirement of such a transition is the reduction of transverse space occupation for the integration in the entire receiver chain, so an in-line configuration has been developed. Moreover, the high frequency band implies that an easy fabrication is a critical requirement if a good match between the two guiding structures is to be obtained in the desired band (with a relative bandwidth of 40%). The combination of CAD software and an optimization tool allows the device to achieve a good return loss over the entire band.

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“…They are 0.6 mm in width and 3.2 mm in length, and the approximate offset value from the waveguide centreline is calculated at 34 GHz using the equivalent circuit mode or termed Elliott's method [20,21]. Elliott's method has been successfully used for waveguide slot antenna arrays [22][23][24][25][26][27][28], although it yields the offset value to be approximately effective only. In order to get more accurate offset value and fully account for the coupling effect, it is necessary to optimize the monopulse antenna array by fullwave simulation.…”

Section: Design Fabrication and Testmentioning

confidence: 99%

Ka-Band Slot-Microstrip-Covered and Waveguide-Cavity-Backed Monopulse Antenna Array

Liu

Huang

et al. 2014

International Journal of Antennas and Propagation

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A slot-microstrip-covered and waveguide-cavity-backed monopulse antenna array is proposed for high-resolution tracking applications at Ka-band. The monopulse antenna array is designed with a microstrip with2×32slots, a waveguide cavity, and a waveguide monopulse comparator, to make the structure simple, reduce the feeding network loss, and increase the frequency bandwidth. The2×32slot-microstrip elements are formed by a metal clad dielectric substrate and slots etched in the metal using the standard printed circuit board (PCB) process with dimensions of 230 mm × 10 mm. The proposed monopulse antenna array not only maintains the advantages of the traditional waveguide slot antenna array, but also has the characteristics of wide bandwidth, high consistence, easy of fabrication, and low cost. From the measured results, it exhibits good monopulse characteristics, including the following: the maximum gains of sum pattern are greater than 24 dB, the 3 dB beamwidth of sum pattern is about 2.2 degrees, the sidelobe levels of the sum pattern are less than −18 dB, and the null depths of the difference pattern are less than −25 dB within the operating bandwidth between 33.65 GHz and 34.35 GHz for VSWR ≤ 2.

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Design of Shaped Beam Planar Arrays of Waveguide Longitudinal Slots

Cited by 23 publications

References 32 publications

Edge‐radiating slot antenna based on half‐mode substrate integrated waveguide

Edge‐radiating slot antenna based on half‐mode substrate integrated waveguide

A Compact In-Line Waveguide-to-Microstrip Transition in the Q-Band for Radio Astronomy Applications

Ka-Band Slot-Microstrip-Covered and Waveguide-Cavity-Backed Monopulse Antenna Array

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