Front‐to‐back ratio improvement of a short pyramidal horn antenna using metal strips/rods in LTE/cellular band

Lee, Kyoung Joo; Oh, Soon Soo; Lee, Young Hwan; Kim, Young Sik

doi:10.1049/iet-map.2015.0241

Cited by 5 publications

(3 citation statements)

References 15 publications

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“…In this design, R P is chosen to be exceptionally short, and is approximated with R P ≈ λ 0 /3. A similarly short horn design has also been proposed in [30]. For completeness, the slant lengths, l E and l H , can be derived from (17) as…”

Section: Design Of the Horn Antennamentioning

confidence: 99%

An Automated Approach to Horn Antenna Impedance Matching and Manufacturing Using 3D Printing

Sablic-Nemec,

Joler

2023

JCOMSS

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In this paper, we propose a streamlined design and automation of a horn antenna and its rectangular waveguidebased feeder using computer simulation-based optimizations and additive manufacturing. The approach enables time-effectiveness with a holistic design of the two components, while achieving advantageous results of the antenna parameters. The approach is described in comparison to other works and the results presented and discussed on the antenna models manufactured for two midband frequencies: at 2437 MHz and 5250 MHz. The optimumsearch algorithm was able to find the parameter values that resulted in more than 25 dB improvement in S11-parameter values in comparison to the initial design based on the textbook theory. For the 2437-MHz antenna, the achieved bandwidth, using the optimized parameters, was 16.52% wide comparing to 5.14% bandwidth that was the result based on the analytical expressions. In case of the 5250-MHz antenna, the optimized antenna bandwidth reached 25.47%. The fabricated antenna gain was close to the design value.

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Section: Design Of the Horn Antennamentioning

confidence: 99%

An Automated Approach to Horn Antenna Impedance Matching and Manufacturing Using 3D Printing

Sablic-Nemec,

Joler

2023

JCOMSS

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“…To achieve an effective relative permittivity coefficient less than one, the metamaterial structure consists of an array of metal thin-wire [1][2][3] whereas an array of a metal split-ring resonator results in an effective relative permeability coefficient smaller than one [1][2][3][4]. Metamaterials have many applications, for example, improving the radiation characteristics of microstrip antennas by covering an array of metamaterial cells in front of a microstrip antenna [5], side lobe level (SLL) reduction of antennas that are used as high surface impedances adjacent to the interior walls of a pyramidal horn antenna [6], gain enhancement in horn antennas [7][8][9] and so on. Also, the structures with superstrate configuration have been proposed as a lens [10].…”

Section: Introductionmentioning

confidence: 99%

Size reduction of a conical horn antenna loaded by multi‐layer metamaterial lens

Sedaghat

Mohajeri

2022

IET Microwaves Antenna & Prop

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In this paper, a conical horn antenna in the presence of a metamaterial lens in the X‐band is introduced and fabricated. The annular metamaterial lens is located at the aperture of a shortened horn antenna, whose length is half the length of the corresponding optimum horn. The phase velocity in the metamaterial lens is more than the phase velocity along the axis of the antenna for the same propagation distance, so the phase distribution at the aperture of the antenna is uniform and the gain of the shortened horn antenna increases. Metamaterial cells are designed in the form of a printed circuit board that have easy to build and suitable cost. The design process is based on how the waves incident on the proposed metamaterial cell, and finally, by using the particle swarm optimisation (PSO) algorithm proper radiation characteristics in the desired frequency range can be achieved. The radiation characteristics of an antenna with a metamaterial lens are similar to that of an antenna with optimum length in the desired frequency band. The difference is that the weight and volume of these antennas are reduced, so they have better performance in satellite and radar systems.

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“…The lower phase center (PC) variation by profiling the dual‐ridged antenna 2 and the corrugated antennas is done in 3,4 . To improve the front‐to‐back ratio (FBR), various techniques like using metal strip/rod inside the pyramidal antenna, 5 soft surface ring in microstrip Yagi array antenna to suppress the surface waves, 6 and electrically small resonators as a radiating elements 7 are proposed. However, they have higher PC variation, larger 3 or 10 dB beam width, 8,9 and higher cross‐ polarization 8,10 …”

Section: Introductionmentioning

confidence: 99%

A high gain aperture match parabolic horn antenna with stable phase center and higher FBR in S‐band

Baghel

Kulkarni

Nayak

2021

Micro & Optical Tech Letters

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This paper presents an aperture matched parabolic pyramid horn antenna (APPHA) having flaring in the E‐ and H‐ plane. The proposed structure is designed and manufactured for S‐band (2.2–3.3 GHz) with a semicircular aperture matched section in both planes. The APPHA gives half power beam width (HPBW) less than 17° and 15° in the E‐ and H‐ planes, respectively due to the parabolic profile and aperture match section. An average improvement in front to back ratio and gain is 18.53 dB and 1.45 dBi, respectively compared to the conventional pyramidal horn antenna. The maximum variation in the phase center is also 2.8 cm. The measured return loss and cross‐polarization of less than 12 and 20 dB, respectively, is seen throughout the band, thus providing a good impedance matching. The proposed antenna having higher gain and lower HPBW can be used for wireless power transfer applications due to point directive beam to charge the batteries of quad‐copter, sensors as well as being a good candidate for parabolic dish reflector feed.

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Front‐to‐back ratio improvement of a short pyramidal horn antenna using metal strips/rods in LTE/cellular band

Cited by 5 publications

References 15 publications

An Automated Approach to Horn Antenna Impedance Matching and Manufacturing Using 3D Printing

An Automated Approach to Horn Antenna Impedance Matching and Manufacturing Using 3D Printing

Size reduction of a conical horn antenna loaded by multi‐layer metamaterial lens

A high gain aperture match parabolic horn antenna with stable phase center and higher FBR in S‐band

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