Circularly polarized microstrip Yagi antenna array with tilted beam for improved monopulse characteristics

Kong, Deok Kyu; Woo, Daewoong; Kim, Jae‐Sik; Yoon, Young Joong

doi:10.1002/mop.32413

Cited by 2 publications

(7 citation statements)

References 3 publications

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“…It is seen that our proposed array has the smallest volume especially the tiny cross‐section dimension which is attractive to be further used in two‐dimensional arrays. The design with a planar structure in References [15, 18] has a wider bandwidth than our design. However, its size of cross‐section is larger.…”

Section: Measurement and Discussionmentioning

confidence: 99%

“…There are a few other types of antennas having the character of endfire circular polarization, such as dipoles arrays, 8,9 slot antenna, 10 and magnet and electric antennas 11,12 or Yagi arrays. [13][14][15][16][17][18][19] In Reference [8], a wideband log-periodic dipole array with circular polarization was proposed. It utilized a cross-element structure and a position shift to realize the 90 phase difference between adjacent dipole elements.…”

Section: Introductionmentioning

confidence: 99%

“…13 It realized a wide matching bandwidth of 20.7% and an AR bandwidth of 16.0% with a profile of 0.05λ 0 . In Reference [15], four inclined microstrip Yagi antennas were used in an array to achieve broader beam coverage and an improved gain compared to the same patch array. Moreover, a dualband Moxon-Yagi antenna was proposed in Reference [16], which realized a good unidirectional radiation beam, a FBR of more than 15 dB, and a gain better than 5 dBi in UHF and ISM bands.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Circularly polarized Yagi array with small size and symmetric pattern by using counter‐wound helix

Huang

Chen

et al. 2022

Int J RF Mic Comp-Aid Eng

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A circularly polarized Yagi array with a compact structure, small size, and symmetric pattern is reported in this paper. It consists of four 3-segment counter-wound helices, one driven element, one director, and two reflectors, for a moderate gain and front-to-back ratio. Similar to conventional Yagi with linear polarization, all helical elements have different but close resonant frequencies. The driven element has a resonant frequency higher than that of the reflectors but lower than that of the director. Owing to the uniform pattern of the counter-wound helical element, a very symmetric pattern with circular polarization at the endfire direction is achieved. A prototype of the 4-element array is fabricated and tested. Measured results show that an impedance bandwidth with jS 11 j < À10 dB from 1.345 to 1.42 GHz (5.42%) and a 3-dB AR band from 1.34 to 1.43 GHz (6.5%) are obtained, showing an overlapped bandwidth of 5.42%. A realized gain up to 7.03 dBi and an offset angle within 3 are also realized. The overall size of the array is as small as 0.66λ 0 Â 0.107λ 0 Â 0.40λ 0 , showing possibility of further being formed to large scanning or multi-beam arrays.

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Section: Measurement and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Circularly polarized Yagi array with small size and symmetric pattern by using counter‐wound helix

Huang

Chen

et al. 2022

Int J RF Mic Comp-Aid Eng

View full text Add to dashboard Cite

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“…Similarly, one or two reflectors are used to improve the front-to-back ratio of the Yagi-Uda antenna. There are various types of Yagi-Uda antennas starting from dipole antenna to antennas of microstrip, 5,10,12 using EBG ground plane, 7 using substrate integrated waveguide. 8 The Yagi-Uda antenna with one reflector and two directors is designed on PTFE substrate having dielectric constant (ε r ) = 2.55, substrate thickness (h) = 3.048 mm, tanδ = 0.0012.…”

Section: Design Of Microstrip Yagi-uda Antenna and 4 -Element Yagi-ud...mentioning

confidence: 99%

Design of microstrip Yagi‐Uda antenna array for 4.5 GHz band fixed wireless access in 5G

Roy

2022

Micro & Optical Tech Letters

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Fixed wireless is a part of wireless local area network (WLAN) infrastructure which connects two fixed locations, like, tower to building or building to building by radio link or by other wireless link. In fifth generation (5G) for fixed wireless access (FWA) one of the attractive bands is 4.5 GHz band. The designs of a microstrip Yagi‐Uda antenna and a 4‐element Yagi‐Uda array for the application to 5G FWA at 4.5 GHz band are reported here. The experimentally investigated impedance and radiation properties of Yagi‐Uda antenna and a 4‐element array of it are reported. The antenna has 10 dB return loss bandwidth of 580 MHz which is 12.8% of the centre frequency and the array has bandwidth of 520 MHz which is 11.7% at the centre frequency. The Yagi‐Uda antenna array beam is tilted by 46° from the broadside direction. The measured maximum gains of the Yagi‐Uda antenna and the 4‐element array are 7.2 and 16.5 dBi, respectively. The cross‐polarization levels lower by about 20 dB than the main lobes are observed. The Yagi‐Uda array has high front‐to‐back ratio of better than 25 dB. The measured results are compared with the simulated results.

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Circularly polarized microstrip Yagi antenna array with tilted beam for improved monopulse characteristics

Cited by 2 publications

References 3 publications

Circularly polarized Yagi array with small size and symmetric pattern by using counter‐wound helix

Circularly polarized Yagi array with small size and symmetric pattern by using counter‐wound helix

Design of microstrip Yagi‐Uda antenna array for 4.5 GHz band fixed wireless access in 5G

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