scholarly journals High-gain cavity backed patch antenna arrays at 140 GHz based on LTCC technology

2019 ◽  
Vol 11 (08) ◽  
pp. 829-834 ◽  
Author(s):  
Zihang Qi ◽  
Xiuping Li ◽  
Jinjin Chu ◽  
Jun Xiao ◽  
Hua Zhu
Keyword(s):  
Antenna Arrays ◽  
Patch Antenna ◽  
Impedance Matching ◽  
High Gain ◽  
Ceramic Technology ◽  
Antenna Element ◽  
Maximum Gain ◽  
Gain Enhancement ◽  
High Gain Antenna ◽  
Element Array

AbstractIn this paper, high-gain cavity backed patch antenna arrays are proposed based on low temperature co-fired ceramic technology at 140 GHz. By introducing a substrate integrated cavity to the patch antenna element, the gain is enhanced by 3.3 dB. Moreover, a rectangular ring is loaded around the patch for better impedance matching and further gain enhancement. The final simulated maximum gain of the proposed antenna element is 9.8 dBi. Based on the proposed high-gain antenna element, a 4 × 4-element array and an 8 × 8- element array are presented. The 4 × 4-element array shows a measured maximum gain of 16.9 dBi with 9.5 GHz bandwidth (136.2–145.7 GHz) and the 8 × 8-element array shows a measured maximum gain of 21.8 dBi with 9.8 GHz bandwidth(136.7–146.5 GHz), respectively.

scholarly journals High Gain Beam Steering Antenna Arrays with Low Scan Loss for mmWave Applications

2022 ◽  
Vol 72 (1) ◽  
pp. 67-72
Author(s):  
Anil Kumar Yerrola ◽  
Maifuz Ali ◽  
Ravi Kumar Arya ◽  
Lakhindar Murmu ◽  
Ashwani Kumar
Keyword(s):  
Antenna Array ◽  
Antenna Arrays ◽  
Patch Antenna ◽  
Beam Steering ◽  
High Gain ◽  
Microstrip Patch Antenna ◽  
Antenna Element ◽  
Array Design ◽  
Conformal Antenna ◽  
Microstrip Patch

In millimeter-wave (mmWave) communications, the antenna gain is a crucial parameter to overcome path loss and atmospheric attenuation. This work presents the design of two cylindrical conformal antenna arrays, made of modified rectangular microstrip patch antenna as a radiating element, working at 28 GHz for mmWave applications providing high gain and beam steering capability. The microstrip patch antenna element uses Rogers RO4232 substrate with a thickness of 0.5 mm and surface area of 5.8 mm × 5.8 mm. The individual antenna element provides a gain of 6.9 dBi with return loss bandwidth of 5.12 GHz. The first antenna array, made by using five conformal antenna elements, achieves a uniform gain of approximately 12 dBi with minimal scan loss for extensive scan angles. In the second antenna array, a dielectric superstrate using Rogers TMM (10i) was used to modify the first antenna array. It enhanced the gain to approximately 16 dBi while still maintaining low scan loss for wide angles. The proposed array design method is very robust and can be applied to any conformal surface. The mathematical equations are also provided to derive the array design, and both array designs are verified by using full-wave simulations.

Broadband high gain cavity resonator antenna using planar electromagnetic bandgap (EBG) superstrate

2022 ◽  
pp. 1-12
Author(s):  
Soumik Dey ◽  
Sukomal Dey
Keyword(s):  
Patch Antenna ◽  
Impedance Matching ◽  
Cavity Resonator ◽  
High Gain ◽  
Center Frequency ◽  
Electromagnetic Bandgap ◽  
Gain Enhancement ◽  
Rectangular Patch ◽  
Fabry Perot ◽  
Rectangular Microstrip Antenna

Abstract This paper presents a broadband miniaturized Fabry–Perot cavity resonator antenna (CRA) made of novel electromagnetic bandgap (EBG) superstrate as partially reflecting surface (PRS) and reactive impedance surface (RIS) backed rectangular patch antenna. To the best of the authors' knowledge, the proposed EBG exhibits the highest stopband bandwidth (BW) with a bandgap existing between 7.37 and 12.4 GHz (50.9%). Frequency-selective property of the EBG is utilized under plane wave incidence to demonstrate it as PRS superstrate in CRA antenna. The cavity is excited with a rectangular microstrip antenna which is made of two dielectric substrates with an additional RIS layer sandwiched between them. The RIS provides wideband impedance matching of the primary feed antenna. A 7 × 7 array of the EBG superstrate is loaded over the patch antenna having an overall lateral dimension of only 45 × 45 mm2 or 1.62 λ0 × 1.62 λ0 where λ0 is the free space wavelength at the center frequency of 10.8 GHz. The proposed Fabry–Perot CRA (FP-CRA) achieves gain enhancement of 6.59 dB as compared with the reference antenna and has a 10 dB return loss BW of 23.79% from 10.07 to 12.79 GHz. A prototype of the FP-CRA is fabricated and experimentally tested with single and dual layers of EBG superstrate. Measured results show BWs of 21.5 and 24.8% for the two cases with peak realized gain of 12.05 and 14.3 dBi, respectively. Later a four-element antenna array with corporate feeding is designed as the primary feed of the CRA. The simulation result shows a flat gain of >13 dBi with gain variation <1.2 dB over the impedance BW of 13.2%.

scholarly journals High-Gain Planar Array of Reactively Loaded Antennas for Limited Scan Range Applications

Electronics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1376
Author(s):  
Ronis Maximidis ◽  
Diego Caratelli ◽  
Giovanni Toso ◽  
A. Bart Smolders
Keyword(s):  
Radiation Pattern ◽  
Antenna Arrays ◽  
Short Circuit ◽  
Central Element ◽  
Vertical Axis ◽  
High Gain ◽  
Antenna Element ◽  
Horizontal Distance ◽  
Array Configuration ◽  
High Gain Antenna

This paper proposes a novel high-gain antenna element that can be used in antenna arrays that only require a limited scan range. Each high-gain antenna element uses a linear sub-array of highly-coupled open-ended waveguides. The active central element of this sub-array is directly fed, while the remaining passive waveguides are reactively loaded. The loads are implemented by short-circuits positioned at various distances from the radiating aperture. The short-circuit positions control the radiation pattern properties and the scattering parameters of the array. The proposed sub-array antenna element is optimized in the presence of the adjacent elements and provides a high gain and a flat-top main lobe. The horizontal distance between the sub-array centers is large in terms of wavelengths, which leads to limited scanning capabilities in the E-plane. However, along the vertical axis, the element spacing is around 0.6 wavelength at the central frequency that is beneficial to achieve a wider scan range in the H-plane. We show that the sub-array radiation pattern sufficiently filters the grating lobes which appear in the array factor along the E-plane. To demonstrate the performance of the proposed array configuration, an array operating at 28.0 GHz is designed. The designed array supports scan angles up to ±7.5° along the E-plane and ±24.2° along the H-plane

scholarly journals Performance Improvement of Substrate Integrated Cavity Fed Dipole Array Antenna Using ENZ Metamaterial for 5G Applications

Sensors ◽  
2021 ◽  
Vol 22 (1) ◽  
pp. 125
Author(s):  
Shaza El-Nady ◽  
Rania R. Elsharkawy ◽  
Asmaa I. Afifi ◽  
Anwer S. Abd El-Hameed
Keyword(s):  
Coplanar Waveguide ◽  
Impedance Matching ◽  
High Gain ◽  
Dipole Antenna ◽  
Center Frequency ◽  
Antenna Element ◽  
Gain Enhancement ◽  
Radiated Power ◽  
Low Profile ◽  
Unit Cells

This paper exhibits a high-gain, low-profile dipole antenna array (DAA) for 5G applications. The dipole element has a semi-triangular shape to realize a simple input impedance regime. To reduce the overall antenna size, a substrate integrated cavity (SIC) is adopted as a power splitter feeding network. The transition between the SIC and the antenna element is achieved by a grounded coplanar waveguide (GCPW) to increase the degree of freedom of impedance matching. Epsilon-near-zero (ENZ) metamaterial technique is exploited for gain enhancement. The ENZ metamaterial unit cells of meander shape are placed in front of each dipole perpendicularly to guide the radiated power into the broadside direction. The prospective antenna has an overall size of 2.58 λg3 and operates from 28.5 GHz up to 30.5 GHz. The gain is improved by 5 dB compared to that of the antenna without ENZ unit cells, reaching 11 dBi at the center frequency of 29.5 GHz. Measured and simulated results show a reasonable agreement.

Ka-band antenna arrays with dual-frequency and dual-polarized patch elements

2016 ◽  
Vol 8 (6) ◽  
pp. 963-972 ◽  
Author(s):  
Benjamin Rohrdantz ◽  
Thomas Jaschke ◽  
Frauke K. H. Gellersen ◽  
Anton Sieganschin ◽  
Arne F. Jacob
Keyword(s):  
Antenna Arrays ◽  
Patch Antenna ◽  
Communication Systems ◽  
Satellite Communication ◽  
Circuit Board ◽  
Dual Band ◽  
Antenna Element ◽  
Dual Frequency ◽  
Ka Band ◽  
Dual Polarized

In this contribution a dual-band, dual-polarized microstrip antenna element for array applications is presented. The patch antenna is designed to operate simultaneously at around 30 and 20 GHz, the up- and downlink frequencies of modern Ka-band satellite communication systems. The antenna is smaller than half the freespace wavelength at 30 GHz to enable its utilization as array element of dual-band ground terminals. Integrating transmitter and receiver circuits allows, in turn, for a very compact active terminal solution. To minimize production cost, the design is carried out in standard multilayer printed circuit board technology. The antenna features two distinct polarization ports suitable for either dual linear or dual circular polarization if both ports are excited in quadrature. The single antenna design process is described in detail and simulation and measurement results are presented. Finally, different arrays based on this patch antenna are evaluated by simulation and measurements.

scholarly journals Design & development of high gain antenna arrays for CDMA 450

2011 ◽  
Author(s):  
Azhari Asrokin ◽  
Anas Abas ◽  
Rizal Helmy Basri ◽  
Norman Jamlus
Keyword(s):  
Antenna Arrays ◽  
High Gain ◽  
High Gain Antenna

scholarly journals 2D Gain Enhancement Based on Single-Layer SIW Corrugated Technique with Slot Array Feeder

2018 ◽  
Vol 2018 ◽  
pp. 1-6
Author(s):  
Mingtuan Lin ◽  
Chenglong Lin
Keyword(s):  
Reflection Coefficient ◽  
Printed Circuit Board ◽  
Single Layer ◽  
High Gain ◽  
Circuit Board ◽  
Design Complexity ◽  
Printed Circuit ◽  
Gain Enhancement ◽  
High Gain Antenna ◽  
The Common

Novel slot-array-based SIW corrugated technique is demonstrated to achieve 2D gain enhancement, namely, sharpening the beamwidths in both E-plane and H-plane. Compared to other metallic corrugated methods to realize 2D gain enhancement, the proposed design, with SIW grooves to reduce the beamwidth in E-plane and slot array to increase the directivity in H-plane, has a lower profile, weight, and design complexity, which can be easily fabricated with the common printed circuit board (PCB) technique. A prototype is designed and fabricated, with measurement presenting a low reflection coefficient less than −10 dB from 26.4 GHz to 28.2 GHz and an enhanced gain up to 18 dB. Overall, our proposed technique will be beneficial for the design of high-gain antenna in 5G wireless terminals.

scholarly journals Bandwidth and Gain Enhancement of Patch Antenna with Stacked Parasitic Strips Based on LTCC Technology

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Li Li ◽  
Yong Zhang ◽  
Jinhong Wang ◽  
Wei Zhao ◽  
Shuang Liu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Patch Antenna ◽  
Impedance Bandwidth ◽  
Radiation Patterns ◽  
Antenna Radiation ◽  
Maximum Gain ◽  
Gain Enhancement ◽  
Resonant Modes ◽  
Operating Bandwidth

A compact patch antenna with stacked parasitic strips (SPSs) based on low temperature cofired ceramic (LTCC) technology is presented. By adding three pairs of SPSs above the traditional patch antenna, multiple resonant modes are excited to broaden the bandwidth. At the same time, the SPSs act as directors to guide the antenna radiation toward broadside direction to enhance the gain. The measured results show that the prototype antenna achieves an impedance bandwidth of 16% forS11<-10 dB (32.1–37.9 GHz) and a maximum gain of about 8 dBi at 35 GHz. Furthermore, the radiation patterns and gain are relatively stable within the operating bandwidth. The total volume of the antenna is only 8 × 8 × 1.1 mm3.

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