Corrugated rectangular horns for use as microwave feeds

Baldwin, R.; McInnes, Peter

doi:10.1049/piee.1975.0127

Cited by 13 publications

(10 citation statements)

References 3 publications

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“…Some of the first such horns are described in a paper by Lawrie and Peters 131, who pioneered this field. The theory of wave propagation in E-plane corrugated waveguide is dincussed in some detail by Baldwin and McInnes [4]. The parametric study of the properties of cormgated surfaces by Metzer and Peters 151 provides useful insights into the effects of ridge thickness, corrugation density, and surface resistivity.…”

Section: Il Theorymentioning

confidence: 99%

“…The intermediate corrugated section, 38 cm in length, serves as a transition from the smoothwalled section near the throat to the large section that comprises the main body of the horn. The two E-plane walls of this section contain corrugations whose ridge tops are coplanar with the walls 'Thin io denoted A# in the notation of [4] and (61. The ridges are made from strips of 0.8-mm aluminum sheet for reduced weight, ease of construction, and low ohmic loss.…”

Section: Il Theorymentioning

confidence: 99%

“…4 GHz. The antenna, a rectangular horn with corrugations on i b E-plane walls, is made primarily from aluminum sheet for lightness and ease of fabrication.…”

Section: Introductionmentioning

confidence: 99%

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A large L-band rectangular corrugated horn

Witebsky

Smoot

Levin

et al. 1987

IEEE Trans. Antennas Propagat.

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Abstract-This paper describes a lightweight, corrugated-horn antenna, constructed from sheet metal. Over a 1.3-1.7 GHz operating band, its half-power beamwidth is approximately 20' in the E-plane and varies from 17' to 13' in the H-plane. Quarter-wave choke slots at the aperture help to reduce the E-plane sidelobes below -55 dB at angles greater than W ' , while the H-plane sidelobes lie in that range both with and without choke slots. Return loss throughout the operating band is -25 dB or below. Critical dimensions are provided, together with useful guidelines for designing similar antennas.

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Section: Il Theorymentioning

confidence: 99%

Section: Il Theorymentioning

confidence: 99%

See 1 more Smart Citation

A large L-band rectangular corrugated horn

Witebsky

Smoot

Levin

et al. 1987

IEEE Trans. Antennas Propagat.

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“…In consequence, the solution thus obtained failed to satisfy the impedance compatibility relation [7], which must be satisfied by all correct separable modal solutions. Baldwin and Mclnnes [8] followed the method used by Bryant to analyse a rectangular horn with transverse corrugations along the broadwalls only. This is satisfactory where the rectangular horn is to receive linearly polarised waves, with the polarisation orthogonal to the corrugated walls.…”

mentioning

confidence: 99%

Propagation characteristics of rectangular corrugated waveguides

Obaid

Maclean

Razaz

1985

IEE Proc. H Microw. Antennas Propag. UK

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The propagation characteristics of guided waves in a rectangular waveguide with transverse corrugations on all four walls is investigated both theoretically and experimentally. The theoretical solution obtained is an improvement on an earlier analysis, providing a basis for the assumption that the corrugated side walls of the guide act, very approximately, like a smooth metal-walled guide. It is also shown that the new solution, in contrast to the earlier solution, satisfies the impedance compatibility relation. List of principal symbolsa = inside width of main body region of rectangular waveguide b = inside height of main body region of rectangular waveguide h = slot depth in corrugated waveguide s = slot width in corrugated waveguide t = tooth thickness in corrugated waveguide p = s + t period of corrugations w = a + 2h d =b + 2h k = free space propagation phase constant k x = transverse x-directed phase constant of the propagating hybrid mode k y = transverse ^-directed phase constant of the propagating hybrid mode a x = propagation constant of the evanescent mode in the side-wall slots P y = propagation constant of the standing wave in the broad-wall slots P z = propagation constant of the propagating hybrid mode in the main body region A = field amplitude coefficient of the propagating hybrid modes B = field amplitude coefficient of the standing waves in the broad-wall slots C = field amplitude coefficient of the evanescent modes in the side-wall slots manufacture, as their construction is based on the machining of flat plates only. On the analytical side, corrugated waveguides of rectangular cross-section have received less attention than those of circular cross-section because of the greater difficulty in satisfying the boundary conditions when all four walls are corrugated [3]. The case when only one wall is corrugated, and slow waves propagate, has been well understood [4,5] for some time.The first solution for the four-corrugated-wall case, by Bryant [3] in 1969, effectively treated the case of corrugations on the broad walls alone, and did not strictly consider the sidewall corrugations, as was pointed out by Dybdal et al. [6] in 1970. In consequence, the solution thus obtained failed to satisfy the impedance compatibility relation [7], which must be satisfied by all correct separable modal solutions. Baldwin and Mclnnes [8] followed the method used by Bryant to analyse a rectangular horn with transverse corrugations along the broadwalls only. This is satisfactory where the rectangular horn is to receive linearly polarised waves, with the polarisation orthogonal to the corrugated walls. A horn of such construction had been shown previously by Lawrie and Peters [9] to have an E-plane radiation pattern with very low sidelobes.The purpose of this paper is to present a new analysis for the rectangular waveguide with transverse corrugations on all four walls. This takes account of the side-wall corrugations and the solution obtained satisfies the impedance compatibility relation.

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“…When surface impedance is capacitive, the tangential magnetic field vanishes at the wall. The transmission characteristics of a rectangular corrugated waveguide have been analytically and numerically studied in the literature [14]- [17]. As slots on the inner walls consist of LTCC layers sandwiched by thin metal layers, metal thickness and the thickness of the LTCC layers correspond to the thickness of the corrugation teeth and the slot width, respectively.…”

Section: B Vertical Substrate Integrated Waveguidementioning

confidence: 99%

300-GHz Step-Profiled Corrugated Horn Antennas Integrated in LTCC

Tajima

Song

Ajito

et al. 2014

IEEE Trans. Antennas Propagat.

105

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This paper presents 300-GHz step-profiled corrugated horn antennas, aiming at their integration in low-temperature co-fired ceramic (LTCC) packages. Using substrate integrated waveguide technology, the cavity inside the multi-layer LTCC substrate and a surrounding via fence are used to form a feeding hollow waveguide and horn structure. Owing to the vertical configuration, we were able to design the corrugations and stepped profile of horn antennas to approximate smooth metallic surface. To verify the design experimentally, the LTCC waveguides and horn antennas were fabricated with an LTCC multi-layer process. The LTCC waveguide exhibits insertion loss of 0.6 dB/mm, and the LTCC horn antenna exhibits 18-dBi peak gain and 100-GHz bandwidth with more than 10-dB return loss. The size of the horn antenna is only , which makes it easy to integrate it in LTCC transceiver modules.Index Terms-Dielectric substrates, horn antennas, low-temperature co-fired ceramics (LTCC), terahertz (THz).

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Corrugated rectangular horns for use as microwave feeds

Cited by 13 publications

References 3 publications

A large L-band rectangular corrugated horn

A large L-band rectangular corrugated horn

Propagation characteristics of rectangular corrugated waveguides

300-GHz Step-Profiled Corrugated Horn Antennas Integrated in LTCC

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