A high efficiency Ku-band printed monopulse array

Jahagirdar, D. R.; Borkar, V.G.

doi:10.1109/aps.2010.5562102

Cited by 8 publications

(4 citation statements)

References 5 publications

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“…In traditional monopulse radar systems, Cassegrain parabolic structures along with heavy and complicated waveguide monopulse comparator as a feed network have been employed [1]. However, a monopulse antenna can be designed using a light weight microstrip technology [2][3][4][5][6][7][8][9][10], which has many advantages over traditional radar systems. Some of these are designed on a single layer, where the radiating and comparator network are designed on the same layer [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…A 16 × 16 MSA array with non-linear central feeding to improve the SLL has been designed with a planar monopulse comparator designed on the same layer. In [4], a planar monopulse antenna on a single layer with series feeding technique has been presented. The bandwidth was only 0.5% at the Ku-band with an efficiency of around 32%.…”

Section: Introductionmentioning

confidence: 99%

“…The radiating structure is designed using multilayer electromagnetically coupled (EMCP) MSA array to increase the bandwidth and gain of the antenna. Instead of using branch-line couplers [2][3][4][5][6][7] or planar magic-T [8] which either having narrow bandwidth or complexity in integration with radiating structure, a monopulse comparator network consisting of four ratrace couplers is designed to obtain the sum and difference of the four signals received from the radiating elements of the antenna [9,10]. A ratrace coupler provides more bandwidths compared with a two branch-line coupler.…”

Section: Introductionmentioning

confidence: 99%

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Broadband monopulse microstrip antenna array for X‐band monopulse tracking

Kumar

2018

IET Microwaves, Antennas & Propagation

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In this study, a broadband planar multilayer monopulse antenna at the X‐band for monopulse tracking applications is presented. A monopulse comparator has been designed using four hybrid ratrace for feeding the radiating elements of the antenna. Each radiating part of the monopulse antenna consists of 4 × 4 electromagnetically coupled microstrip antenna array. To achieve circular geometry as well as better side‐lobe level (SLL), a hybrid feeding technique is used in radiating antenna array by adding a few elements in series at the end elements of the parasitic layer of a 4 × 4 corporate fed array. The prototype has been fabricated, tested and measured results are compared with simulated results. The simulated impedance bandwidth for |S11| ≤ −10 dB is 21% (8.6–10.6 GHz). A measured peak sum beam gain of 24.4 dBi has been obtained. Measured SLL of <−15 dB has been achieved in both elevation and azimuth planes along with a null depth of <−35 dB for difference patterns in both the planes. The radiation pattern is symmetrical in both the planes with half‐power beamwidth nearly equal to 9.0°.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Broadband monopulse microstrip antenna array for X‐band monopulse tracking

Kumar

2018

IET Microwaves, Antennas & Propagation

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“…Depending on the topology and technology, they can be classified as planar two-dimensional (2D) or three-dimensional (3D) structures, as is the one proposed in this work. In the context of planar 2D structures, microstrip circuitry in the form of arrays are widely employed for a number of applications due to their small weight, low cost, and ease of fabrication [12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Dual-Mode Conical Horn Antenna with 2-D Azimuthal Monopulse Pattern for Millimeter-Wave Applications

Piroutiniya,

Rasekhmanesh,

Masa-Campos

et al. 2023

Sensors

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In this paper, a novel concept of a three-dimensional full metal system including a Dual-Mode Converter (DMC) network integrated with a high-gain Conical Horn Antenna (CHA) is presented. This system is designed for 5G millimeter wave applications requiring monopulse operation at K-band (37.5–39 GHz). The DMC integrates two mode converters. They excite either the TE11cir or the TE01cir modes of the circular waveguide of the CHA. The input of the mode converters is the TE10rec mode of two independent WR-28 standard rectangular waveguide ports. By integrating the DMC with the CHA, the whole system, called a Dual-Mode Conical Horn Antenna (DM-CHA), is formed, radiating the sum (Σ) and difference (Δ) patterns associated to the monopulse operation. To adequately prevent the propagation of higher order modes and mode mutual coupling, this integration procedure is carefully designed and fabricated. To prove the performance of the design, the DMC network was fabricated using subtractive manufacturing by Computer Numerical Control (CNC) technology. The CHA was fabricated using additive manufacturing by Direct Metal Laser Sintering (DLMS) technology. Finally, the simulation and measurement results were exhaustively compared, including return loss, isolation, radiation pattern, and gain of the full DM-CHA structure. It is noteworthy that this system provided up to ±11° per beam in the angular of arrival detection to support the high data rate operation for 5G satellite communications in the millimeter-wave band.

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An inverted suspended microstrip antenna array integrated with ratrace comparator at X-Band for monopulse tracking

Kumar

2016

2016 Asia-Pacific Microwave Conference (APMC)

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A high efficiency Ku-band printed monopulse array

Cited by 8 publications

References 5 publications

Broadband monopulse microstrip antenna array for X‐band monopulse tracking

Broadband monopulse microstrip antenna array for X‐band monopulse tracking

Dual-Mode Conical Horn Antenna with 2-D Azimuthal Monopulse Pattern for Millimeter-Wave Applications

An inverted suspended microstrip antenna array integrated with ratrace comparator at X-Band for monopulse tracking

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