Microstrip Leaky-Wave Antennas With Nonuniform Periodical Loading of Shorting Pins for Enhanced Frequency Sensitivity

Xie, Danpeng; Li, Zhu

doi:10.1109/tap.2018.2829884

Cited by 28 publications

(13 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(6). On the contrary, other types of periodic-LWAs can control their dispersion to tune the frequency-scanning ratio (angle of radiation versus frequency slope), using some engineering methods [14], [15]. Apart from frequency-scanning, it is interesting to perform fixed-frequency electronic scanning with LWAs.…”

Section: (5)mentioning

confidence: 99%

“…In practice, the electrical length of the unit cell becomes less than and the LC-based CRLH-TL appears to be effectively homogeneous by the EM waves if and/or when the unit cell is less than the guided wavelength (i.e., ) [11]. For the LC unit cell, considering the periodic boundary conditions (PBCs) which are similar to the Bloch-Floquet theorem [11], the dispersion relation (for the LC unit cell) is justified and expressed as follows [1], [2], [11]: (15) where the series impedance ( ) and shunt admittance ( ) of the LC unit-cell are determined by: ,…”

Section: (5)mentioning

confidence: 99%

See 1 more Smart Citation

A Comprehensive Survey of “Metamaterial Transmission-Line Based Antennas: Design, Challenges, and Applications”

et al. 2020

View full text Add to dashboard Cite

In this review paper, a comprehensive study on the concept, theory, and applications of composite right/left-handed transmission lines (CRLH-TLs) by considering their use in antenna system designs have been provided. It is shown that CRLH-TLs with negative permittivity and negative permeability have unique properties that do not occur naturally. Therefore, they are referred to as artificial structures called "metamaterials". These artificial structures include series left-handed (LH) capacitances , shunt LH inductances , series right-handed (RH) inductances , and shunt RH capacitances that are realized by slots or interdigital capacitors, stubs or via-holes, unwanted current flowing on the surface, and gap distance between the surface and ground-plane, respectively. In the most cases, it is also shown that structures based on CRLH metamaterial-TLs are superior than their conventional alternatives, since they have smaller dimensions, lower-profile, wider bandwidth, better radiation patterns, higher gain and efficiency, which make them easier and more cost-effective to manufacture and mass produce. Hence, a broad range of metamaterial-based design possibilities are introduced to highlight the improvement of the performance parameters that are rare and not often discussed in available literature. Therefore, this survey provides a wide overview of key early-stage concepts of metematerial-based designs as a thorough reference for specialist antennas and microwave circuits designers. To analyze the critical features of metamaterial theory and concept, several examples are used. Comparisons on the basis of physical size, bandwidth, materials, gain, efficiency, and radiation patterns are made for all the examples that are based on CRLH metamaterial-TLs. As revealed in all the metematerial design examples, footprint area decrement is an important issue of study that have a strong impact for the enlargement of the next generation wireless communication systems.

show abstract

Section: (5)mentioning

confidence: 99%

Section: (5)mentioning

confidence: 99%

A Comprehensive Survey of “Metamaterial Transmission-Line Based Antennas: Design, Challenges, and Applications”

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Leaky-wave antennas (LWAs) based on microstrip line (MSL) have received extensive attention since the 1970s due to the advantages of simple structure, beamscanning capability with frequency, low profile, and low cost. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] Microstrip LWAs are divided into two categories based on the transversal mode of the host transmission line, including the usage of fundamental mode [4][5][6][7] and the higher-order modes. [8][9][10][11][12][13][14][15][16] The fundamental EH 0 -mode of the MSL is a non-leaky mode.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] Microstrip LWAs are divided into two categories based on the transversal mode of the host transmission line, including the usage of fundamental mode [4][5][6][7] and the higher-order modes. [8][9][10][11][12][13][14][15][16] The fundamental EH 0 -mode of the MSL is a non-leaky mode. Thus, some methods have been researched to excite the leaky mode on the EH 0 -mode MSL, such as introducing short pins 4,5 and exciting a pair of MSL under differential feedings.…”

Section: Introductionmentioning

confidence: 99%

A periodic meandering microstrip line leaky‐wave antenna with consistent gain and wide‐angle beam scanning

Wang

Sun

Xue

2022

Int J RF Mic Comp-Aid Eng

View full text Add to dashboard Cite

In this article, a periodic leaky‐wave antenna (LWA) with wide‐angle beam scanning and stable gain is proposed based on the meandering microstrip line. Due to the meandering property of the microstrip line, the longitudinal dimension of the antenna is reduced. Firstly, the radiation characteristic of the meandering microstrip line is analyzed in detail. Each corner of the meandering microstrip line is modeled by a shunt capacitance and shunt radiation conductance to acquire the equivalent circuit. Then, the frequency balanced condition is investigated based on the established equivalent circuit to realize continuous beam scanning through broadside. Subsequently, the method of open‐stop band (OSB) suppression is studied by introducing asymmetric perturbation on the LWA unit cell, which actually can be applied to eliminate the OSB effect in arbitrary symmetric LWAs. Finally, an antenna prototype is simulated and measured. The measured results agree well with the simulated results, validating the proposed method of OSB suppression. The measured results show that the designed antenna exhibits the beam scanning capacity of −47° to +76° with the frequency varying from 5.0 to 7.8 GHz and gain variation of 2.9 dB.

show abstract

“…Recently, phase gradient metasurface is utilized to modulate the dispersion behavior of the SSPP waves, leading to frequency scanning radiation [40], [41] with a range of 42 • . For some practical systems, such as motion detection [42] and automotive adaptive cruise control, high frequency sensitivity [43], [44], meaning achieving wide scanning angle in narrow frequency band, is hoped due to bandwidth limitation. Despite 18.0 • /GHz frequency sensitivity is realized by gradient metasurface in [40], its scanning range is only 32.4 • .…”

Section: Introductionmentioning

confidence: 99%

A Unidirectional Beam-Scanning Antenna Excited by Corrugated Metal–Insulator–Metal Ground Supported Spoof Surface Plasmon Polaritons

2019

View full text Add to dashboard Cite

A unidirectional beam-scanning antenna is proposed. The antenna is constructed by placing a series of circular radiating elements on a 2-mm dielectric slab backed by a corrugated metal-insulatormetal (CMIM) ground. The CMIM structure is introduced not only as a ground but also as a waveguide for spoof surface plasmon polaritons (SSPPs). The beam-scanning function is realized through the phase difference of SSPPs fed to the radiating elements. In addition, the CMIM ground reflects downward radiation waves onto upward space, leading to a unidirectional pattern and enhanced radiation gain. Both the numerical simulation and experiment results demonstrate the good performance of the proposed antenna. They validate that the antenna achieves unidirectional radiation and scanning angle of 57 • when the frequency varies from 6.2 to 9 GHz with the frequency sensitivity of 20.4 • /GHz. The realized gains are higher than 8.11 dBi over the entire band. Compared with the published works, this paper provides a novel feed technology, a simpler structure, and higher frequency sensitivity. The high-frequency sensitivity is beneficial to reduce the bandwidth burden of the entire system. The antenna has potential applications in satellite communication. INDEX TERMS Antenna, surface plasmon polaritons, beam scanning.

show abstract

Microstrip Leaky-Wave Antennas With Nonuniform Periodical Loading of Shorting Pins for Enhanced Frequency Sensitivity

Cited by 28 publications

References 35 publications

A Comprehensive Survey of “Metamaterial Transmission-Line Based Antennas: Design, Challenges, and Applications”

A Comprehensive Survey of “Metamaterial Transmission-Line Based Antennas: Design, Challenges, and Applications”

A periodic meandering microstrip line leaky‐wave antenna with consistent gain and wide‐angle beam scanning

A Unidirectional Beam-Scanning Antenna Excited by Corrugated Metal–Insulator–Metal Ground Supported Spoof Surface Plasmon Polaritons

Contact Info

Product

Resources

About