scholarly journals Design of the Variable Inclination Continuous Transverse Stub Antenna Based on Rectangular Grating Slow-Wave Structure

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Jun Gao ◽  
Xue Lei ◽  
Guo-Hu Chen ◽  
Yi Zhang ◽  
Jun-Mo Wu
Keyword(s):  
Theoretical Model ◽  
Slow Wave ◽  
Wave Structure ◽  
Circuit Theory ◽  
Slow Wave Structure ◽  
Propagation Characteristics ◽  
Leaky Wave ◽  
Full Wave ◽  
Leaky Wave Antenna ◽  
Wave Antenna

In order to solve difficulty in designing nonlinear slow-wave structure (SWS) of the variable inclination continuous transverse stub (VICTS) antenna, we combine the study of the semiopen rectangular grating SWS in the PPW with equivalent circuit theory of leaky-wave antenna to propose a theoretical model for SWS of VICTS element. The computations that the propagation characteristics of VICTS element are calculated by the theoretical model. The results are consistent with the full-wave simulation, which prove the validity and accuracy of the theoretical model. Lastly, by using the theoretical model, an approach for nonlinearly designing SWS is introduced and carried out. The approach improves the gain of the VICTS antenna 0.4 dB.

scholarly journals A Photonically-Excited Leaky-Wave Antenna Array at E-Band for 1-D Beam Steering

2020 ◽  
Vol 10 (10) ◽  
pp. 3474
Author(s):  
Álvaro J. Pascual-Gracia ◽  
Muhsin Ali ◽  
Guillermo Carpintero Del Barrio ◽  
Fabien Ferrero ◽  
Laurent Brochier ◽  
...  
Keyword(s):  
Printed Circuit Board ◽  
Beam Steering ◽  
Hybrid Approach ◽  
Circuit Board ◽  
Antenna Element ◽  
Leaky Wave ◽  
Full Wave ◽  
Leaky Wave Antenna ◽  
Wave Antenna ◽  
Free Data

This manuscript reports the first leaky-wave antenna (LWA) array excited by a photomixer as well as its potential application for alignment in wireless links. The designed array is manufactured in printed circuit board (PCB) technology, works at the E-band (from 75 to 85 GHz), and provides a directive beam of about 18 dBi with a frequency scanning span of 22°. The antenna element consists of a microstrip line periodically loaded with stubs, and it has been designed employing a hybrid approach combining full-wave simulations and transmission line theory. This approach enables the optimization of the periods when the open-stopband of the LWA is mitigated or removed at the frequency of broadside emission. The proposed antenna was first tested using a ground signal ground (GSG) probe; the measured return loss and radiation patterns of the fabricated prototype were in good agreement with full-wave simulations. Then, the LWA array was integrated with the photomixer chip using conductive epoxy threads. Measurements of the radiated power yielded a maximum of 120 µW at 80.5 GHz for a 9.8 mA photocurrent. Finally, the antenna was used in a 25 cm wireless link, obtaining a 2.15 Gbps error-free data rate.

A Review of Slow Wave Structure of Travelling Wave Antenna using Waveguide

2016 ◽  
Vol 3 (1) ◽  
pp. 1-5
Author(s):  
Sakshi Jindal ◽  
◽  
Kritika Khanna ◽  
Brajlata Chauhan ◽  
Rashmi Choudhary ◽  
...  
Keyword(s):  
Slow Wave ◽  
Wave Structure ◽  
Travelling Wave ◽  
Slow Wave Structure ◽  
Wave Antenna

Microstrip Line Fed Leaky Wave Antenna with Shorting Vias for Wideband Systems

2016 ◽  
Vol 6 (4) ◽  
pp. 1725 ◽  
Author(s):  
T V Rama Krishna ◽  
B T P Madhav ◽  
G Monica ◽  
V Janakiram ◽  
S Md Abid Basha
Keyword(s):  
Propagation Constant ◽  
Stop Band ◽  
Wave Structure ◽  
Travelling Wave ◽  
Strip Line ◽  
Defected Ground Structure ◽  
Leaky Wave ◽  
Leaky Wave Antenna ◽  
Wave Antenna ◽  
Conducting Path

In this work a complex structured shorted vias microstrip leaky wave antenna is designed and analysed. A Leaky wave antenna is a travelling wave structure with complex propagation constant. When shorting vias are loaded in a periodic structure the fundamental resonant mode shows some stop band characteristics and some of the modes will strongly attenuated. Three different types of iterations are examined in this work with and without defected ground structures. The defected ground structure based leaky wave antennas are showing better performance characteristics with respect to efficiency and phase. A micro strip line feeding with impedance of 50 ohms at both ports are providing excellent impedance matching to the conducting path on the microstrip surface. The shorting vias are suppressing certain higher order frequency bands and providing excellent wide band characteristics with low loss.

scholarly journals Microstrip Line Fed Leaky Wave Antenna with Shorting Vias for Wideband Systems

2016 ◽  
Vol 6 (4) ◽  
pp. 1725
Author(s):  
T V Rama Krishna ◽  
B T P Madhav ◽  
G Monica ◽  
V Janakiram ◽  
S Md Abid Basha
Keyword(s):  
Propagation Constant ◽  
Stop Band ◽  
Wave Structure ◽  
Travelling Wave ◽  
Strip Line ◽  
Defected Ground Structure ◽  
Leaky Wave ◽  
Leaky Wave Antenna ◽  
Wave Antenna ◽  
Conducting Path

In this work a complex structured shorted vias microstrip leaky wave antenna is designed and analysed. A Leaky wave antenna is a travelling wave structure with complex propagation constant. When shorting vias are loaded in a periodic structure the fundamental resonant mode shows some stop band characteristics and some of the modes will strongly attenuated. Three different types of iterations are examined in this work with and without defected ground structures. The defected ground structure based leaky wave antennas are showing better performance characteristics with respect to efficiency and phase. A micro strip line feeding with impedance of 50 ohms at both ports are providing excellent impedance matching to the conducting path on the microstrip surface. The shorting vias are suppressing certain higher order frequency bands and providing excellent wide band characteristics with low loss.

Full-wave analysis of microstrip leaky-wave antenna

1989 ◽  
Vol 25 (13) ◽  
pp. 870 ◽  
Author(s):  
M. Ghomi ◽  
H. Baudrand
Keyword(s):  
Wave Analysis ◽  
Leaky Wave ◽  
Full Wave ◽  
Leaky Wave Antenna ◽  
Wave Antenna ◽  
Full Wave Analysis

scholarly journals Full-wave analysis of the high frequency characteristics of the sine waveguide slow-wave structure

AIP Advances ◽  
2017 ◽  
Vol 7 (8) ◽  
pp. 085111 ◽  
Author(s):  
Xia Lei ◽  
Yanyu Wei ◽  
Yuanyuan Wang ◽  
Qing Zhou ◽  
Gangxiong Wu ◽  
...  
Keyword(s):  
Slow Wave ◽  
High Frequency ◽  
Wave Structure ◽  
Slow Wave Structure ◽  
Frequency Characteristics ◽  
Wave Analysis ◽  
Full Wave ◽  
Full Wave Analysis
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