Design of an eight element edge slot waveguide array antenna

Dunn, D. S.; Augustin, Eugene P.; Chang, C. S.

doi:10.1109/southc.1994.498115

Cited by 3 publications

(4 citation statements)

References 6 publications

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“…The antenna is typically fed with a coaxial-to-waveguide adapter on one end and is terminated with either a short circuit (metallic plate) or 50 load on the opposite end. When the antenna is terminated with a metallic short cap, the spacing, incline, and depth of the resonant slots become critical to achieving the desired resonant frequency [3]. The slots are spaced approximately g /2 apart, wh g is the waveguide wavelength, and the first slot is spaced g /4 from the end cap.…”

Section: Designmentioning

confidence: 99%

“…The input impedance is dependent upon the conductance of each of the resonant slots. It has been analytically determined that the optimal slot depth for resonance wit may be determined from the slot width, w, depth, , angle, , waveguide width, a, and wall thickness, t, as follows [3],…”

Section: Designmentioning

confidence: 99%

“…This presents a considerable design challenge since the realized gain must be maintained at ~12 dBi. An edge slot waveguide array antenna [2][3][4] has been developed to meet these system requirements of high gain and minimized antenna depth.…”

Section: Introductionmentioning

confidence: 99%

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Edge slot waveguide array antenna for an omnidirectional radar system

Keller

Weiss

Farley³

2016

2016 IEEE International Symposium on Antennas and Propagation (APSURSI)

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An edge-slot waveguide array antenna is proposed to serve as the receive antenna in an omnidirectional radar system. The general design process for the antenna is described and the antenna is modeled in Ansoft HFSS and EMSS FEKO. Results from these simulations are compared with prototype measurements to characterize the antenna. The results indicate an S 11 <-10 dB bandwidth of 6.5%, half-power beamwidth of 14° in azimuth and 96° in elevation and a realized gain of 12.65 dBi. I.

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Section: Designmentioning

confidence: 99%

Section: Designmentioning

confidence: 99%

See 1 more Smart Citation

Edge slot waveguide array antenna for an omnidirectional radar system

Keller

Weiss

Farley³

2016

2016 IEEE International Symposium on Antennas and Propagation (APSURSI)

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“…Waveguideslot antennas, which are mainly used in cen timeter ranges, have become widespread [4]. They are used in the radio equipment of aircraft due to their compactness, small weight and dimensions, as well as low aerodynamic resistance.…”

Section: Introductionmentioning

confidence: 99%

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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