scholarly journals On-Chip Terahertz Detector Designed with Inset-Feed Rectangular Patch Antenna and Catadioptric Lens

Electronics ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 1049
Author(s):  
Fan Zhao ◽  
Luhong Mao ◽  
Weilian Guo ◽  
Sheng Xie ◽  
Clarence Augustine T. H. Tee
Keyword(s):  
Patch Antenna ◽  
Simple Structure ◽  
High Gain ◽  
Patch Antennas ◽  
Strip Line ◽  
Rectangular Patch ◽  
Voltage Responsivity ◽  
On Chip ◽  
Very High ◽  
Detector Voltage

This study proposes an on-chip terahertz (THz) detector designed with on-chip inset-feed rectangular patch antenna and catadioptric lens. The detector incorporates a dual antenna and dual NMOSFET structure. Radiation efficiency of the antenna reached 89.4% with 6.89 dB gain by optimizing the antenna inset-feed and micro-strip line sizes. Simulated impedance was 85.55 − j19.81 Ω, and the impedance of the antenna with the ZEONEX horn-like catadioptric lens was 117.03 − j20.28 Ω. Maximum analyzed gain of two on-chip antennas with catadioptric lens was 17.14 dB resonating at 267 GHz. Maximum experimental gain of two on-chip patch antennas was 4.5 dB at 260 GHz, increasing to 10.67 dB at 250 GHz with the catadioptric lens. The proposed on-chip rectangular inset-feed patch antenna has a simple structure, compatible with CMOS processing and easily implemented. The horn-like catadioptric lens was integrated into the front end of the detector chip and hence is easily molded and manufactured, and it effectively reduced terahertz power absorption by the chip substrate. This greatly improved the detector responsivity and provided very high gain. Corresponding detector voltage responsivity with and without the lens was 95.67 kV/W with NEP = 12.8 pW/Hz0.5 at 250 GHz, and 19.2 kV/W with NEP = 67.2 pW/Hz0.5 at 260 GHz, respectively.

scholarly journals Performance Enhancement Techniques for Patch Antennas of Small Satellites

2021 ◽  
Author(s):  
Zizung Yoon ◽  
Mayank Mayank ◽  
Enrico Stoll
Keyword(s):  
Antenna Arrays ◽  
Patch Antenna ◽  
Power Flow ◽  
Performance Enhancement ◽  
Ground Plane ◽  
High Gain ◽  
Patch Antennas ◽  
Small Satellite ◽  
Rectangular Patch ◽  
Satellite Missions

Patch antennas are compact, less complex, planar structures and therefore, widely used in small satellite missions for telecommand, data link, and intersatellite link, particularly in S- band and X- band. Improved performance of these patch antennas in terms of gain and compactness will di-rectly affect the communication efficiency of small satellite missions. Especially the coming IoT (Internet of Things) constellations require high gain and efficient antenna arrays. An optimization of single patch antenna elements is an important cornerstone for the missions. Therefore, the ef-fects of various antenna enhancement techniques, such as slotted ground plane, resistor and ca-pacitor integration, parasitic patch elements, are analyzed. These techniques were applied on a rectangular patch antenna with parameter variation to identify the optimal performances with respect to bandwidth, operating frequency, gain, polarization, and power flow. Finally, the techniques were combined to obtain an optimized antenna in terms of gain and compactness. The results were compared to a slotted reference antenna. For the scenario of a 2.4 GHz patch antenna, a gain optimization of 27 % (from 7.09 to 8.14 dBi) or size reduction of 52 % (from 96.04 to 46.2 cm²) could be achieved. Overall, our study revealed an effective way to increase the patch antenna performance, which can directly contribute to more efficient communication links and design of antenna arrays.

Gain enhancement of microstrip patch antenna using Sierpinski fractal-shaped EBG

2015 ◽  
Vol 8 (6) ◽  
pp. 915-919 ◽  
Author(s):  
Neeraj Rao ◽  
Dinesh Kumar Vishwakarma
Keyword(s):  
Patch Antenna ◽  
High Frequency ◽  
Microstrip Patch Antenna ◽  
Patch Antennas ◽  
Electromagnetic Band Gap ◽  
Gain Enhancement ◽  
Microstrip Patch Antennas ◽  
Microstrip Patch ◽  
Rectangular Patch ◽  
Frequency Components

This is the first report on novel mushroom-type electromagnetic band gap (EBG) structures, consisting of fractal periodic elements, used for enhancing the gain of microstrip patch antennas. Using CST Microwave studio the performance of rectangular patch antenna has been examined on proposed fractal EBG substrates. It is found that fractal EBGs are more effective in suppressing surface wave thus resulting in higher gain. The gain of rectangular patch has been improved from 6.88 to 10.67 dBi. The proposed fractal EBG will open new avenues for the design and development of variety of high-frequency components and devices with enhanced performance.

scholarly journals Comparative analysis of T and I Shaped Rectangular Mircostrip Patch Antenna for Wireless communication Applications

2021 ◽  
Vol 23 (05) ◽  
pp. 806-815
Author(s):  
Nivedita Mishra ◽  
◽  
Dr. Saima Beg ◽  
Anand Kumar Gupta ◽  
◽  
...  
Keyword(s):  
Patch Antenna ◽  
Mirror Image ◽  
Design Parameters ◽  
Patch Antennas ◽  
Space Length ◽  
Wireless Applications ◽  
Microstrip Patch ◽  
Rectangular Patch ◽  
Large Bandwidth ◽  
Resonance Frequencies

The following is an abstract of the paper, the mirror image design parameters and effective results for an antenna with a rectangular microstrip overlay using IE3D software is described that outcomes of the simulations and designs are displayed. The probe feed approach was used to generate the microstrip patch pattern. Such patch antennas have been investigated due to their large bandwidth and gain. This antenna is fabricated on an FR-4 epoxy substrate. This antenna’s performance and results are also matched to a standard rectangular patch antenna. Variables are utilized to improve the antenna’s simulation results are as position, space, length, and width of different mirror images T and I shaped antenna slots. The measured results from the simulated design show that the designed construction resonates at various closely separated frequencies that are within the frequency band allotment for wireless applications. At resonance frequencies of 2GHz to 3GHz, the bandwidth and return loss are significantly enhanced.

scholarly journals Miniaturized Microstrip Patch Antenna for Microwave Imaging Application

2019 ◽  
Vol 9 (1S) ◽  
pp. 214-217
Keyword(s):  
Patch Antenna ◽  
Federal Communication Commission ◽  
Wide Band ◽  
Microstrip Patch Antenna ◽  
Microwave Imaging ◽  
Patch Antennas ◽  
Microstrip Patch Antennas ◽  
Microstrip Patch ◽  
Rectangular Patch ◽  
Imaging Application

This paper present the brief view to design of a microstrip rectangular patch antenna. Microstrip patch antennas are used because of configuration such as low profile, conformal, light weight, and easy fabrication. The linear polarization and circularly polarization of microstrip patch antennas have attracted more attention recently. These antennas are significant due to their ability to improve the benefits of microwave imaging application. The Federal Communication Commission (FCC) has approved the frequency limit for narrowband and wideband antenna. One of the advantage of the narrow band technology is the design of feasible compact conformal antennas. Therefore a compact miniaturized microstrip rectangular patch antenna has been proposed to design for microwave imaging application. The miniaturization of microstrip patch antenna has been done to obtain the better narrow bandwidth, return loss and Voltage Standing Wave Ratio (VSWR). Ultra Wide Band (UWB) is achieved by using certain techniques which is used for expansion of bandwidth. The rectangular patch antenna with a 50Ωmicrostrip feed is fabricated on the FR4 substrate.

scholarly journals Study of Effect of Variations in slot dimensions on Fractal Patch antenna Performance

2013 ◽  
Vol 5 (1) ◽  
pp. 41-48
Author(s):  
Somesh Kumar ◽  
Ms. Monika
Keyword(s):  
Patch Antenna ◽  
Electromagnetic Waves ◽  
Low Cost ◽  
Research Work ◽  
Microstrip Antennas ◽  
Strip Line ◽  
Rectangular Patch ◽  
Antenna Performance ◽  
Feed Networks ◽  
Microwave Communications

An antenna is a device that is made to efficiently radiate and receive radiated Electromagnetic waves. Microstrip antennas are attractive due to their light weight, conformability and low cost. These antennas can be integrated with printed strip-line feed networks and active devices. This is a relatively new area of antenna engineering. For reducing the size of antenna, fractal geometries have been introduced in the design of patch antenna. Fractal antennas also called as space filling curves are very compact, multiband or wideband, and have useful applications in cellular telephone and microwave communications. In our research work, we have used IE3D software for designing the antenna. We study the effect of variations of slot dimensions on antenna performance so as to obtain good results. In this research work, four different fractal patch antennas are designed. The rectangular base geometry is same for the all four antennas but the elliptical slot dimensions differ. In simulation, S parameters of all four antennas are analyzed. From the S parameter displays, comparison of all four antennas is done on the basis of three parameters that are: Lowest frequency, Multiband and S11 values. The simulation results shows that as the elliptical slot dimension decreases on rectangular patch antenna, the performance of fractal patch antenna improves on the basis of three factors that are lowest frequency, multiband and s11 values.

scholarly journals Design and Research of Rectangular, Circular and Triangular Microstrip Patch Antenna

2019 ◽  
Vol 8 (12S) ◽  
pp. 658-663
Keyword(s):  
Patch Antenna ◽  
Communication Systems ◽  
Dielectric Substrate ◽  
High Gain ◽  
Wireless Communication Systems ◽  
Patch Antennas ◽  
Light Weight ◽  
High Potency ◽  
Aerospace Applications ◽  
Triangular Patch

Modern Wireless communication Systems need high gain, light-weight and straightforward structure antennas to assure high potency, quality and additional dependableness. A patch antenna is incredibly easy in building, employing the fabrication techniques of standard Microstrip. It consists of a blotch of metal on a grounded dielectric substrate which forms a light-weight antenna best suited for mobile and aerospace applications. Patch antennas have developed significantly throughout preceding years and plenty of their limitations are overcome by changes in its design and fabrication techniques. The conducting patch may well be of any form however rectangular patterned configuration is used foremost. In this study we tend to have an interest not solely in rectangular however comparison of it with circular and triangular patch antenna styles. The objective here is to analyze the results of various patches.

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