A Self-Nulling Single-Layer Dual-Mode Microstrip Patch Antenna for Grating Lobe Reduction

Iqbal, Zabed; Mitha, Tanzeela; Pour, Maria

doi:10.1109/lawp.2020.3007903

Cited by 22 publications

(13 citation statements)

References 21 publications

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“…To highlight the advantages of the proposed antenna, a comparison between the reported pattern reconfigurable phased antennas and the proposed design is summarized in Table 1. Ding and colleagues [16][17][18][19][20][21][22] can achieve the widest 3 dB beam scanning range, but the topology of the antennas makes them hard to be used in some conformal applications. The large diode number of the antenna unit used in Ding et al 16 greatly increases the cost and loss compared to the proposed design.…”

Section: Measured Results Of the 1 × 4 Arraymentioning

confidence: 99%

“…18 The fundamental mode with broadside radiation pattern and any higher-order mode with conical radiation pattern are excited together to realize the tilted beams by a shared aperture radiator. 19,20 In a study by Iqbal et al, 21 the TM 11 and TM 21 modes are excited to generate the tilted beams by slots and posts loaded circular patch, the antenna can realize a wide beam scanning range with a low grating lobe, but the antenna unit needs an extra channel to excite the high order mode with different phase differences, which will greatly increase the cost of communication systems for the large size array. In the study by Chen et al, 22 a mixed-mode dielectric resonant antenna (DRA) is used to achieve the wide beam scanning range.…”

Section: Introductionmentioning

confidence: 99%

“…The different states of the diodes can change the phase difference between the circular and annular patches, the use of the PRFN greatly decreases the cost of the proposed antenna compared with the twochannel per unit designs. 21,22 To verify the performance of the proposed antenna, a 1 × 4 antenna array is fabricated and measured. The measured results proved the performance of wide-angle beam scanning.…”

Section: Introductionmentioning

confidence: 99%

“…The phase differences are provided by a PIN diode based reflective ±90° phase shifter. The different states of the diodes can change the phase difference between the circular and annular patches, the use of the PRFN greatly decreases the cost of the proposed antenna compared with the two‐channel per unit designs 21,22 . To verify the performance of the proposed antenna, a 1 × 4 antenna array is fabricated and measured.…”

Section: Introductionmentioning

confidence: 99%

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Design of a pattern reconfigurable antenna for wide‐angle scanning phased array applications

Cao

Feng

Yan

2022

Micro & Optical Tech Letters

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In this article, a pattern reconfigurable antenna is proposed for wide beam scanning phased array applications. Different from the wide beamwidth unit design, the large beam scanning range of the proposed antenna array is realized by the reconfigurable radiation patterns with the different tilted angles of the antenna unit. The tilted beams can enhance the total beam coverage range of the antenna unit with high directivity, thus increasing the beam scanning range of the antenna array. The tilted beams are realized by the combination of the concentric circular and annular patch antennas. A PIN diode-loaded reconfigurable feeding network is designed to feed the patches with reconfigurable phase differences. The feeding network can achieve a good impedance matching effect and guarantee the symmetry of the tilted beams. To verify the beam scanning performance of the proposed antenna, a 1 × 4 linear array is fabricated and measured. The results prove that the antenna can achieve ±61°beam scanning range with ±78°3 dB beam coverage range and the maximum sidelobe level (SLL) of −8.0 dB. The characteristics include lowprofile, high efficiency, low SLL, and wide beam scanning range making it a very attractive choice for phased array antenna applications. K E Y W O R D S microstrip antenna, phased array antenna, reconfigurable antennaHow to cite this article: Cao Y, Feng P, Yan S. Design of a pattern reconfigurable antenna for wide-angle scanning phased array applications.

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Section: Measured Results Of the 1 × 4 Arraymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design of a pattern reconfigurable antenna for wide‐angle scanning phased array applications

Cao

Feng

Yan

2022

Micro & Optical Tech Letters

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“…The stacked configuration of the dual-mode circular patch antenna, assumed in the preceding analytical investigations in the three-element array design, increases the complexity of its fabrication and assembly in practice. Thus, to alleviate the manufacturing process of an adaptive three-element linear array, a single-layer dual-mode patch antenna 30 with the displaced phase center property is used as the base element of the array. The single-layer antenna element is printed on a 1.52 mm-thick Rogers RO3003 substrate with the dielectric constant ε r = 3.…”

Section: Methodsmentioning

confidence: 99%

Principles of adaptive element spacing in linear array antennas

Mitha

Pour

2021

Sci Rep

Self Cite

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A novel approach to linear array antennas with adaptive inter-element spacing is presented for the first time. The main idea is based upon electronically displacing the phase center location of the antenna elements, which determine their relative coordinates in the array configuration. This is realized by employing dual-mode microstrip patch antennas as a constitutive element, whose phase center location can be displaced from its physical center by simultaneously exciting two modes. The direction and the amount of displacement is controlled by the amplitude and phase of the modes at the element level. This in turn facilitates reconfiguring the inter-element spacing at the array level. For instance, a uniformly-spaced array could be electronically transformed into a non-uniform one without any mechanical means. The proposed idea is demonstrated in two- and three-element linear antenna arrays. The technique has the potential to control the radiation characteristics such as sidelobe levels, position of the nulls, and the beamwidths in small arrays, which are useful for adaptively controlling the array performance in emerging wireless communication systems and radars.

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Triple‐mode resonant null frequency scanning antenna with positive scanned slope

Mao

et al. 2022

Int J RF Mic Comp-Aid Eng

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A novel design approach to triple‐mode resonant null frequency scanning antenna (NFSA) with positive scanned slope is proposed. Firstly, a circular sector patch radiator with short‐circuited circumference is introduced to generate multiple TM0m (m = 1, 2, …) mode resonances. Then, as theoretically predicted and numerically proved, the first three TM0m (m = 1, 2, 3) modes can be effectively combined to yield null frequency scanning functionality with positive scanned slopes. Next, a prototype antenna is designed, fabricated, and measured. As numerically demonstrated and experimentally validated, the proposed NFSA can exhibit a null frequency scanning functionality in xz‐plane with positive scanned slope ranging from θ = −90° to +45° (for null depth smaller than −10 dB) within a fractional impedance bandwidth of about 34.3% (i.e., 2.97‑4.20 GHz).

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A Self-Nulling Single-Layer Dual-Mode Microstrip Patch Antenna for Grating Lobe Reduction

Cited by 22 publications

References 21 publications

Design of a pattern reconfigurable antenna for wide‐angle scanning phased array applications

Design of a pattern reconfigurable antenna for wide‐angle scanning phased array applications

Principles of adaptive element spacing in linear array antennas

Triple‐mode resonant null frequency scanning antenna with positive scanned slope

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