Design of patch antenna with polarization control module to achieve broad 3‐dB gain bandwidth over entire AR range

2020 ◽  
Vol 62 (7) ◽  
pp. 2606-2610 ◽  
Author(s):  
Doyoung Jang ◽  
Sungjun Yoo ◽  
Hosung Choo
Keyword(s):  
Patch Antenna ◽  
Gain Bandwidth ◽  
Control Module ◽  
Polarization Control

A Patch Antenna Design for Giga Frequency Unmanned Aerial Vehicles Application

2021 ◽  
Vol 13 (1) ◽  
pp. 01-07
Author(s):  
Dr.M.D. Javeed Ahammed ◽  
Dr.G. Srinivasa Rao
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Surface Current ◽  
Vital Role ◽  
Frequency Range ◽  
Gain Bandwidth ◽  
Proposed Model ◽  
Major Parameter ◽  
Aerospace Technology ◽  
Conventional Models

In this paper a present time developing application is used that is a UAV Antenna in aerospace technology. These antennas play a vital role in this WIMAX technology. A patch antenna is designed such that all the dimensions should be shrinked yet efficient in radiation in comb shape and this proposed antenna is used at 4.2GHz frequency range. A CST tool is used for designing and simulating our antenna all the dimensions taken for proposed antenna are comparatively less when compared to conventional models. Low return loss, gain, bandwidth and VSWR are optimized by using this design the efficiency is also enhanced by 95% which makes our antenna suitable to the UAV WIMAX applications. Surface current is also one of the major parameter which is reduced by our proposed model.

Designing a Parabolic Double Bi Quad Micro Strip Patch Antenna for High Gain Bandwidth

2018 ◽  
Vol 9 (12) ◽  
pp. 1557
Author(s):  
G. Venkata Vinod ◽  
G Srujana ◽  
Ch Rajesh Babu ◽  
B Santosh Kumar
Keyword(s):  
Patch Antenna ◽  
High Gain ◽  
Gain Bandwidth

Hybrid cascode compensation with Q-factor control module for three-stage OTAs driving ultra-large load capacitors

Circuit World ◽  
2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Hamed Aminzadeh ◽  
Mohammad Mahdi Valinezhad
Keyword(s):  
Damping Factor ◽  
Q Factor ◽  
Gain Bandwidth ◽  
Control Block ◽  
Control Module ◽  
Content Type ◽  
Large Load ◽  
Small Load ◽  
On Chip ◽  
The Stability

Purpose The purpose of this study is to discuss the effect of hybrid cascode compensation with quality factor (Q-factor) control module for the three-stage amplifiers driving ultra-large load capacitors. Compared to the present frequency compensation solutions, it extends the amplifier bandwidth by establishing an extra AC feedback pathway besides the primary pathway through the Miller capacitor, increasing the loop gain at the gain–bandwidth product (GBW) frequency by pushing to the higher frequencies the nondominant poles. Design/methodology/approach A Q-factor control block is used to improve the damping factor of the compensation loop with no power or area overhead, thereby reducing the frequency peaking and the undesired oscillation in the time response for small load capacitors. The Q-factor control module is realized by a tiny-size on-chip capacitor, and provides an extra feedback loop to feed the damping current back to the input stage. A left-half-plane (LHP) zero is also introduced to further improve the stability. Findings A prototype of the proposed amplifier is simulated in 180-nm CMOS with a quiescent current of 24-µA from 1.80-V voltage supply. It achieves a 3.98-MHz gain–bandwidth product for 500-pF load capacitor, while the overall compensation capacitor is limited to 0.5-pF and the DC gain is extended beyond 100-dB. Originality/value The proposed amplifier is absolutely stable for the load capacitors ranging between 80-pF and 100-nF.

scholarly journals Monolithic Patch-Antenna THz Lasers with Extremely Low Beam Divergence and Polarization Control

ACS Photonics ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 412-417
Author(s):  
Joel Pérez-Urquizo ◽  
Yanko Todorov ◽  
Lianhe Li ◽  
Alexander G. Davies ◽  
Edmund H. Linfield ◽  
...  
Keyword(s):  
Patch Antenna ◽  
Beam Divergence ◽  
Polarization Control

scholarly journals Wearable antenna gain enhancement using reactive impedance substrate

2019 ◽  
Vol 13 (2) ◽  
pp. 708 ◽  
Author(s):  
A.N. Suraya ◽  
T. Sabapathy ◽  
M. Jusoh ◽  
N.H. Ghazali ◽  
M.N. Osman ◽  
...  
Keyword(s):  
Patch Antenna ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Microstrip Patch Antenna ◽  
Antenna Gain ◽  
Gain Bandwidth ◽  
Bandwidth Enhancement ◽  
Gain Enhancement ◽  
Wearable Antenna ◽  
Microstrip Patch

A microstrip patch antenna is designed for a wearable antenna. The performance of microstrip patch antenna loaded with reactive impedance surface (RIS) is described in terms of gain, bandwidth and return loss. The antenna is investigated in two conditions which are conventional microstrip antenna with RIS and without RIS. The designed antenna is also aimed at size reduction therefore it will be suitable for a wearable application. This antenna which is made fully using textile and it is designed for operation in the 2.45 GHz band. The performance of microstrip patch antenna loaded with RIS is described in terms of gain, bandwidth, return loss and radiation pattern. The antenna designed with RIS operates at 2.45 GHz. Bandwidth enhancement is achieved with RIS where the designed antenna can cater frequency from 2.4 GHz to 3 GHz. A gain enhancement is achieved of 20% is achieved compared with the conventional patch antenna. Although the size of the patch is reduced with the introduction of RIS, the overall size of the antenna with the substrate is almost similar to the conventional patch antenna. However, the performance of the antenna is greatly enhanced with the use of RIS.

scholarly journals A Novel Dual-Broadband Circularly Polarized Patch Antenna for Precise Satellite Navigation

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Fumin Lin ◽  
Liangxian Zhang ◽  
Huiping Cai ◽  
Mingjian Liu ◽  
Xiaopeng Li ◽  
...  
Keyword(s):  
Patch Antenna ◽  
Satellite Navigation ◽  
Capacitive Coupling ◽  
Dual Band ◽  
Gain Bandwidth ◽  
Circularly Polarized ◽  
Compact Antenna ◽  
Circularly Polarized Radiation ◽  
High Band ◽  
Polarized Radiation

This paper presents a novel dual-band circularly polarized patch antenna for precise satellite navigation. The radiation elements are composed of the inner cross-shaped patch and the outer annular patch which are printed on the same surface of one substrate. Two patches work in different bands, respectively, and emit dual-band circularly polarized radiation. In order to obtain a more compact antenna to meet the application of precise satellite navigation, we vertically place four metal cylinders under the ends of the cross-shaped patch to form four capacitive loadings to lower the resonant frequency of the inner cross-shaped patch. A capacitive coupling feed structure is used to match the input impedance of a patch antenna and make the antenna compact enough. The simulated and measured results show that the proposed antenna can produce appropriate dual-band circularly polarized radiation patterns for precise satellite navigation. The measured results of the antenna illustrate that maximum RHCP gain of the antenna is 4.72 dBi in the low band and 3.98 dBi in the high band, the 3 dB gain bandwidth is 70 MHz in the low band and 65 MHz in the high band.

Radiation Bandwidth Improvement of Electromagnetic Band Gap Cavity Antenna

Frequenz ◽  
2017 ◽  
Vol 71 (5-6) ◽  
Author(s):  
Abdelhalim Chaabane ◽  
Farid Djahli ◽  
Hussein Attia ◽  
Tayeb. A. Denidni
Keyword(s):  
Phase Behavior ◽  
Band Gap ◽  
Patch Antenna ◽  
Impedance Bandwidth ◽  
Frequency Range ◽  
Planar Antennas ◽  
Gain Bandwidth ◽  
Electromagnetic Band Gap ◽  
Triple Layer ◽  
Peak Gain

AbstractIn this paper, an electromagnetic band gap cavity antenna with improved radiation and impedance bandwidths is presented. The proposed antenna is constructed by placing a triple-layer heterogeneous printed-unprinted partially reflective surface (PRS) above a primary aperture-coupled patch antenna. The PRS unit-cell provides a positive gradient reflection phase behavior over the desired frequency range. A prototype antenna is fabricated and measured that highlighted its ability to achieve 3-dB gain bandwidth of about 35.9 %, from 7.93 GHz to 11.4 GHz, with a peak gain of 14.25 dBi at 8.5 GHz. In addition, the impedance bandwidth is 40.32 %, from 7.9 GHz to 11.89 GHz. Thus, the designed antenna outperforms many other competitors for improving the radiation bandwidth of planar antennas with the same presented concept.

scholarly journals Design Inset Fed Microstrip Patch Antenna for L-Band Applications

2021 ◽  
Vol 10 (5) ◽  
pp. 4-7
Author(s):  
Saidulu V.
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Beam Width ◽  
Microstrip Patch Antenna ◽  
Simulation Software ◽  
Gain Bandwidth ◽  
Dielectric Substrates ◽  
Microstrip Patch ◽  
Minimum Bandwidth ◽  
L Band

Present paper focuses on design and simulation of an inset fed rectangular microstrip patch antenna for GPS applications. The proposed antenna is designed at frequency 1.9 GHz which comes in L-Band region and simulated using Electromagnetic Simulator such as HFSS simulation software with three different dielectric substrates and comparing their performance characteristics such as gain, bandwidth, beam width, VSWR and return loss. The simulation results shows that the maximum bandwidth is obtained with FR4 substrate and the minimum bandwidth is found with Arlon AD320 substrate, where as the maximum gain obtained with air (vaccum) substrate. The proposed antenna has been designed for the range of 1.9 GHz and which is highly suitable for GPS applications.

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