Low-Profile EndFire Leaky-Wave Antenna With Air Media

This article proposes a simple and low profile planar Goubau line based end‐fire antenna. End‐fire radiation is achieved by modifying the Goubau line into inverted periodic arrangement of V‐shaped unit cells. Designed prototype is simulated and verified experimentally. Both the simulated and measured results are in good agreement. Proposed antenna radiates toward end‐fire direction between 7.8 and 8.3 GHz. The maximum gain of the antenna is obtained around 7.2 dBi. The average efficiency is observed 70% over the entire operating bandwidth. Proposed end‐fire antenna has a single metallic layer with simple configuration which is easy to fabricate and also easy to integrate with other electronics circuits. The proposed antenna can be used for satellite and RADAR applications.

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“…To verify this, according to the Hanson‐Woodyard criteria . To obtain maximum directivity in the end‐fire direction.…”

Section: Design Principlementioning

confidence: 99%

Goubau line based end‐fire antenna

Rudramuni

Rajanna

Kandaswamy

et al. 2019

Int J RF Microw Comput Aided Eng

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“…As SSPP TLs are slow wave structures in which phase velocity is smaller than the speed of light, traveling wave antennas are well suited to its advantages. Several works have been demonstrated such as leaky-wave antennas [13]- [16] and endfire antennas [17]- [24].There are several types of endfire antenna, such as leaky-wave [25], Yagi-Uda [26],…”

Section: Introductionmentioning

confidence: 99%

Single-Layer High Gain Endfire Antenna Based on Spoof Surface Plasmon Polaritons

2020

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A novel high gain endfire antenna based on the spoof surface plasmon polaritons (SSPP) transmission line (TL) is proposed in this paper. The antenna is designed on a groundless single metal layer inherited the advantages of SSPP. Combined with asymmetric radiation elements of SSPP TL and an elliptical director, this antenna generates endfire radiation beams with 15.75-17.5 GHz. Although the aperture is small, it has obtained a high gain from 10.5 to 12.1 dBi and a high efficiency of 95% overall the operating bandwidth. Measurement results agree well with the simulations. The advantages of single-layer, high gain and low profile make its valuable in wireless communications. INDEX TERMS Endfire, spoof surface plasmon polaritons (SSPP), single-layer.

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“…However, it is quite heavy due to using a large amount of ceramic materials with high dielectric constant. Substrate integrated waveguide (SIW) [5][6][7] and leaky-wave antenna [8][9][10] is another attractive way to realise end-fire radiations. A novel H-plane horn antenna based on SIW horn was presented in [11].…”

Section: Introductionmentioning

confidence: 99%

Novel low profile ultra‐wideband capacitance loaded log‐periodic monopole array with reduced transverse dimension

Chen

Yang

2019

IET Microwaves, Antennas & Propagation

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A novel low profile log‐periodic array with vertically polarised end‐fire radiation patterns is proposed in this study. It totally consists of 22 antenna elements with three different types of monopole antennas. Specifically, conventional monopoles were utilised at the high end band, while monopoles with different types of top‐hat loadings were designed for lower frequency band operation. Shorting posts are strategically introduced to maintain a good impedance matching at the lower band. A folded microstrip line is printed on the back side of the ground plane to feed the array. The log‐periodic monopole array achieves a very low profile of 0.063 λl, where λl is the wavelength at the lowest operating frequency in free space. Moreover, the array also exhibits an extremely narrow width of 0.075 λl in the transverse dimension, which makes the array an attractive candidate for phased array development along the transverse direction. A prototype of the array is fabricated. Measured results show that the array achieves a minimum realised gain of 4.5 dBi across a wide frequency band of 1.19–11.7 GHz (9.83:1).

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Low-Profile EndFire Leaky-Wave Antenna With Air Media

Cited by 46 publications

References 23 publications

Goubau line based end‐fire antenna

Goubau line based end‐fire antenna

Single-Layer High Gain Endfire Antenna Based on Spoof Surface Plasmon Polaritons

Novel low profile ultra‐wideband capacitance loaded log‐periodic monopole array with reduced transverse dimension

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