A Compact Cavity-Based Leaky-Wave Antenna in a Low Temperature Co-Fired Ceramic Process With Improved Performance

Javanbakht, Nima; Amaya, Rony E.; Shaker, J.; Syrett, Barry

doi:10.1109/access.2021.3057303

Cited by 4 publications

(5 citation statements)

References 39 publications

(29 reference statements)

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“…The design achieves the highest gain since it comprises an array of 32 square loops. The design in [29] achieves a high gain with a single element however the structure is quite large compared to the operating wavelength. Although [30] has a smaller size it also has much lower gain at the lower frequency and the overall design has medium complexity.…”

Section: Resultsmentioning

confidence: 99%

Meshed Stacked LTCC Antenna for Space Application

Ahmad

Olule

2022

IEEE Access

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Meshed conductors have been used to realize antenna systems. Previous studies have concentrated on single layer patch designs. In this paper, different mesh configurations of stacked meshed patch antennas are studied; when both patches are meshed, when only the top patch is meshed, when only the bottom patch is meshed and when both patches are continuous solid metal. In addition, the effect of conventional slot loading on stacked mesh patches is also investigated through parametric studies. The designs are fed by coaxial feed probe in the lower patch. The results showed that the stacked mesh performance in terms of the resonant frequency, return loss, gain and radiation efficiency can be comparable to that of a typical continuous metal stacked design. Both patches are 20.86 mm x 21.46 mm. The maximum absolute gain and radiation efficiency of the solid stacked patch were 5.05 dBi and 91.6% while those of the meshed stacked patch were 5.22 dBi and 91.8% respectively. The measurements of the antenna with two stacked meshed patches showed that the antenna was resonant at 2.52 GHz with a reflection coefficient in dB of -23.69 dB. It has a 40 MHz -10 dB impedance bandwidth (1.5%) from 2.50 GHz to 2.54 GHz. The antenna exhibited a maximum measured gain of -0.12 dBi and cross polarization of 10 dB at boresight. An equivalent circuit model for the design is also proposed. The antenna is developed for space application and therefore it was implemented using Low Temperature Co-fired Ceramic (LTCC) technology as the LTCC properties can withstand the harsh environment of space. Although the meshed lines increase the line impedance and therefore can results in increased losses, this can be mitigated by careful mesh selection. Lastly, the meshed design allows for better bonding between the LTCC tape layers.

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Section: Resultsmentioning

confidence: 99%

Meshed Stacked LTCC Antenna for Space Application

Ahmad

Olule

2022

IEEE Access

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“…Another modified version of the SIW is reported in [49][50][51][52][53][54][55]. This version is known to as the half-mode SIW (HMSIW) as shown in Figure 6b.…”

Section: Evolutionary Structures Of the Siwmentioning

confidence: 99%

“…This topology of the SIRW ensures that bandwidth improvement and compactness are achieved in an SIW device. Another modified version of the SIW is reported in [49][50][51][52][53][54][55]. This version is known to as the half-mode SIW (HMSIW) as shown in Figure 6b.…”

Section: Evolutionary Structures Of the Siwmentioning

confidence: 99%

A Review on SIW and Its Applications to Microwave Components

Nwajana

Raymond²

2022

Electronics

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Substrate-integrated waveguide (SIW) is a modern day (21st century) transmission line that has recently been developed. This technology has introduced new possibilities to the design of efficient circuits and components operating in the radio frequency (RF) and microwave frequency spectrum. Microstrip components are very good for low frequency applications but are ineffective at extreme frequencies, and involve rigorous fabrication concessions in the implementation of RF, microwave, and millimeter-wave components. This is due to wavelengths being short at higher frequencies. Waveguide devices, on the other hand, are ideal for higher frequency systems, but are very costly, hard to fabricate, and challenging to integrate with planar components in the neighborhood. SIW connects the gap that existed between conventional air-filled rectangular waveguide and planar transmission line technologies including the microstrip. This study explores the current advancements and new opportunities in SIW implementation of RF and microwave devices including filters, multiplexers (diplexers and triplexers), power dividers/combiners, antennas, and sensors for modern communication systems.

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“…A high-gain sparse phased array antenna with wide-angle frequency beam scanning capability is proposed in [22], operating at 5.8 GHz exhibiting a narrow impedance bandwidth. A leaky-wave antenna for 5G wireless devices with an operation bandwidth of 28.3-29 GHz is proposed and fabricated using low temperature co-fired ceramic (LTCC) technology that uses embedded cavities to reduce the sidelobe levels [23]. A dual beam-scanning leaky-wave antenna is proposed in [24], utilizing cascaded unit cells to cover two separate frequency bands radiating linearly polarized wave in lower band and circularly polarized waves in upper band.…”

Section: Introductionmentioning

confidence: 99%

Quad Sector HMSIW Tapered Slot Antenna Array for Millimeter-Wave Applications

2021

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In this paper, a slot antenna array based on a half-mode substrate integrated waveguide (HMSIW) is presented, integrating a series of linearly tapered slots for wireless broadband applications in millimeter-wave frequencies. The slots are etched on the upper layer of HMSIW, which radiates the energy from the open side of HMSIW, exhibiting a near broadside radiation pattern. Two identical sets of back-to-back printed antenna arrays are cross-lap joined to form a quad sector antenna providing 360° coverage. The proposed antenna occupies a volume of 20 × 20 × 70 mm3. The measured bandwidth is 1.81 GHz (6.53%) for Voltage to Standing Wave Ratio (VSWR) 3:1 from 26.8 to 28.6 GHz, while the peak measured gain and efficiency of single antenna array were 14.2 dB and 71.3%, respectively, at 27.5 GHz. Furthermore, the sidelobe level in the azimuth plane was observed to be 17.75 dB. The performance of the proposed antenna is measured, and a good agreement between simulation and measured results is observed over the frequency range of 27.5–28.35 GHz for millimeter-wave 5G applications.

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A Compact Cavity-Based Leaky-Wave Antenna in a Low Temperature Co-Fired Ceramic Process With Improved Performance

Cited by 4 publications

References 39 publications

Meshed Stacked LTCC Antenna for Space Application

Meshed Stacked LTCC Antenna for Space Application

A Review on SIW and Its Applications to Microwave Components

Quad Sector HMSIW Tapered Slot Antenna Array for Millimeter-Wave Applications

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