Compensation for higher order mode coupling between inclined coupling slots and radiating slots in planar slotted waveguide arrays

Coetzee, Jacob; Kulkarni, Advait; Albannay, Mohammed M.

doi:10.1109/usnc-ursi.2014.6955442

Cited by 1 publication

(6 citation statements)

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“…Modern antennas not only emit or receive electromagnetic waves. Modern transmission antennas ensure the necessary distribution of the electromagnetic field in space during radiation [3]. Modern receiving antennas carry out primary processing of received electromagnetic waves [3].…”

Section: Introductionmentioning

confidence: 99%

“…Modern transmission antennas ensure the necessary distribution of the electromagnetic field in space during radiation [3]. Modern receiving antennas carry out primary processing of received electromagnetic waves [3]. The de velopment of transmitting and receiving antennas is not limited to solving the problems of ensuring their required wave properties in a given frequency range [3].…”

Section: Introductionmentioning

confidence: 99%

“…Modern receiving antennas carry out primary processing of received electromagnetic waves [3]. The de velopment of transmitting and receiving antennas is not limited to solving the problems of ensuring their required wave properties in a given frequency range [3]. The main requirement for modern transmitting and receiving anten nas is the ability to electrically control their parameters and characteristics [3].…”

Section: Introductionmentioning

confidence: 99%

“…The de velopment of transmitting and receiving antennas is not limited to solving the problems of ensuring their required wave properties in a given frequency range [3]. The main requirement for modern transmitting and receiving anten nas is the ability to electrically control their parameters and characteristics [3]. TECHNOLOGY AUDIT AND PRODUCTION RESERVES -№ 1/2(69), 2023 ISSN 2664-9969 Antennas are reverse devices [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…The main requirement for modern transmitting and receiving anten nas is the ability to electrically control their parameters and characteristics [3]. TECHNOLOGY AUDIT AND PRODUCTION RESERVES -№ 1/2(69), 2023 ISSN 2664-9969 Antennas are reverse devices [1][2][3]. They must work in both transmitting and receiving modes.…”

Section: Introductionmentioning

confidence: 99%

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Development of a microwave resonant waveguide slot antenna with in-phase slot excitation

Семенов

Семенова

Kryvinska

et al. 2023

TAPR

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The object of research in the work is the process of radiation of electromagnetic waves of a resonant waveguide-slot antenna with in-phase excitation of slots. The subject of research is the wave parameters and directional properties of a resonant slotted waveguide antenna with in-phase slot excitation. The existing problem is that it is necessary to ensure highly directional properties of the antenna with electrical control of its wave parameters at high transmitter power. This problem is due to the fact that to solve the problem of developing equipment for radio control, and radar of aircraft, highly directional antennas of small sizes are required. To solve this problem, the paper proposes the design of a simple and cheap version of a microwave resonant waveguide-slot antenna with in-phase slot excitation. As a basis for developing a resonant slotted waveguide antenna, the authors chose a standard R48 rectangular waveguide, which is a classic in the theory of directional systems in the microwave range. This is due to the fact that in order to calculate and study a microwave resonant waveguide-slot antenna with in-phase excitation of slots, the authors used well-known elements of the theory of aperture antennas. The design of a resonant slotted waveguide antenna consists of a rectangular waveguide, an exciter, and a feeder. The radiation surface of the antenna is a wide wall of a standard R48 rectangular waveguide along the central axis, of which slots are symmetrically cut in a checkerboard pattern. The exciter is made in the form of a metal pin inside a rectangular waveguide near the short-circuited wall. This pin acts as an asymmetric vertical vibrator that excites electromagnetic waves in a rectangular waveguide. The antenna is tuned to the maximum radiation power mechanically by moving the short-circuited wall of the rectangular waveguide. The pin feeds a feeder based on a coaxial cable with a characteristic impedance of 75 ohms. The developed resonant waveguide-slot antenna with in-phase excitation of slots operates in the frequency range of 4.0–6.0 GHz. In the frequency range of 4.0–5.45 GHz, the value of Voltage Standing Wave Ratio (VSWR) varies from 1.08 to 2.1. In the frequency range of 5.45–6.0 GHz, the Voltage Standing Wave Ratio (VSWR) value varies from 2.1 to 6.55. The directivity of the antenna in the operating frequency range is not less than 90. The width of the main lobe of the antenna pattern in the horizontal plane is not more than 3.1°. The antenna gain in the operating frequency band is at least 100. The efficiency is at least 90 % with a maximum generator signal power of 10 kW.

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Section: Introductionmentioning

confidence: 99%