W band axially displaced monopulse dual‐reflector antenna for inter‐satellite communications

Wang, Yanxun; Wang, Dou; Bi, Bo

doi:10.1049/iet-map.2015.0559

Cited by 16 publications

(9 citation statements)

References 25 publications

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“…Both devices are 11.16 mm in height, denoting considerable compactness with respect to standard solutions where the difference port is perpendicular to the other three ports. The use of a half‐height WR‐90 waveguide leads to a lower profile also when compared to other designs adopting slot coupling …”

Section: Magic‐t Designmentioning

confidence: 99%

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An X‐band compact and low‐profile waveguide magic‐T

Gatti

Rossi

Dionigi

et al. 2019

Int J RF Microw Comput Aided Eng

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An X‐band low‐profile waveguide magic‐T is presented as a combination of two compact and co‐planar E‐plane and H‐plane T‐junctions. Two architectures are proposed according to the sum and difference ports lying on the same side or on opposite sides. This can be an attractive feature in the design of compact architectures. A proof of concept is manufactured with low‐cost 3D printing technology and electroplated. Good agreement between simulated and measured results is observed.

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Section: Magic‐t Designmentioning

confidence: 99%

“…Slot coupling is adopted to further compact the magic‐T structure . The difference port is folded to be parallel with the sum port in order to achieve low profile.…”

Section: Introductionmentioning

confidence: 99%

An X‐band compact and low‐profile waveguide magic‐T

Gatti

Rossi

Dionigi

et al. 2019

Int J RF Microw Comput Aided Eng

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“…Monopulse array systems are one of the most favorite structures used in SSR systems [4]. The monopulse anten-nas are available in planar array type [5,6,7], modal Horn Type [8], [9], reflector type [10][11][12] or even waveguide arrays [13]. Use of monopulse methods [10], [4] for ranging and angle of the arrival estimations which necessitate generation of two SUM and Difference (DIFF), and for more reliability in SSR, use of Control (CTRL) beams out of its antenna system.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Multi-Beam Array Architecture for L-Band Secondary Surveillance Radars

Aliakbarian¹,

Khak²,

Shahpari³

et al. 2019

RADIOENGINEERING

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In this paper, the design and fabrication of a large array antenna with three required, Sum, Difference and Control beams for a monopulse Secondary Surveillance Radar (SSR) is presented. A special array element, which is a high gain dual dipole structure, is designed and tested. This element has 9.6 dB gain in 1060 MHz and does not need any balun. The main challenge of extracting three beams out of one beam feeding networks (BFN) has been resolved efficiently by maximum integration of all three in one network, reducing the number of required modules to one half. The complete 33-element array, working in 1030 MHz and 1090 MHz is designed based on the Taylor array factor. The complex feed network of this 6-meter long array has successfully been synthesized as modular as possible. Sum pattern was designed for 2.7 o azimuth beam width and -20 dB side lobe level and Diff pattern with a deep null in the boresight of the Sum pattern. The Ctrl beam was also designed in order to cover the Sum beam except in the direction of the main lobe.

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“…They can provide a narrow beamwidth for high angular accuracy with a relatively small aperture size [4]. To reach a narrow beamwidth for highgain monopulse tracking radars, reflector antennas are typical candidates, due to their simple design and good performance [5], [6]. However, reflector antennas are bulky due to their three-dimensional structure.…”

Section: Introductionmentioning

confidence: 99%

<inline-formula> <tex-math notation="LaTeX">$W$ </tex-math> </inline-formula>-Band Low-Profile Monopulse Slot Array Antenna Based on Gap Waveguide Corporate-Feed Network

Vosoogh

Haddadi²,

Zaman

et al. 2018

IEEE Trans. Antennas Propagat.

103

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This paper presents a gap waveguide based compact monopulse array antenna, which is formed with four unconnected layers, for millimeter-wave tracking applications at W-band (85-105 GHz). Recently developed gap waveguide technology removes the need for galvanic contact among metallic layers of waveguide structures, and thereby, makes the proposed antenna suitable for easy and low-cost manufacturing. In this context, a low-loss planar Magic-Tee is designed to be used in a monopulse comparator network consisting of two vertically stacked layers. The gap waveguide planar monopulse comparator network is integrated with a high-efficiency 16×16 corporate-fed slot array antenna. The measured results of the comparator network show the amplitude and phase imbalance values to be less than 0.5 dB and 2 • , respectively, over the frequency band of interest. The fabricated monopulse array antenna shows relative impedance bandwidths of 21% with input reflection coefficients better than −10 dB for the sum and difference ports. The null in the difference radiation pattern is measured to be 38 dB below the peak of the sum radiation pattern at 94 GHz. The measured gain is about 30 dBi for the same frequency. The low-loss performance of the comparator network and the feed-network of the proposed array, together with the simple and easy manufacturing and mechanical assembly, makes it an excellent candidate for W-band compact direction-finding systems.

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W band axially displaced monopulse dual‐reflector antenna for inter‐satellite communications

Cited by 16 publications

References 25 publications

An X‐band compact and low‐profile waveguide magic‐T

An X‐band compact and low‐profile waveguide magic‐T

An Efficient Multi-Beam Array Architecture for L-Band Secondary Surveillance Radars

<inline-formula> <tex-math notation="LaTeX">$W$ </tex-math> </inline-formula>-Band Low-Profile Monopulse Slot Array Antenna Based on Gap Waveguide Corporate-Feed Network

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