Terahertz integrated antenna with novel impedance matching structure

2015 ◽  
Author(s):  
Zhen Tang Zhen Tang ◽  
Haidong Hao Haidong Hao ◽  
Xin Lv Xin Lv
Keyword(s):  
Impedance Matching ◽  
Matching Structure ◽  
Integrated Antenna

scholarly journals REASERCH ON A WATER-IMMERSED WIDE BAND HORN ANTENNA WITH WATER-FILLED COAXIAL IMPEDANCE MATCHING STRUCTURE

2019 ◽  
Vol 77 ◽  
pp. 115-123 ◽  
Author(s):  
Yang Yang ◽  
Lianghao Guo ◽  
Qing Zhou ◽  
Zhe Wu ◽  
Haibo Jiang ◽  
...  
Keyword(s):  
Impedance Matching ◽  
Wide Band ◽  
Horn Antenna ◽  
Matching Structure

scholarly journals Wide CPW-Fed Multiband Wearable Monopole Antenna with Extended Grounds for GSM/WLAN/WiMAX Applications

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
Danvir Mandal ◽  
S. S. Pattnaik
Keyword(s):  
Resonance Condition ◽  
Coplanar Waveguide ◽  
Impedance Matching ◽  
Monopole Antenna ◽  
Antenna Performance ◽  
Quarter Wavelength ◽  
Triangular Patch ◽  
Matching Structure ◽  
Standard Limit ◽  
Good Agreement

A novel wide coplanar waveguide- (CPW-) fed multiband wearable monopole antenna is presented. The multiband operation is achieved by generating slanted monopoles of different lengths from an isosceles triangular patch. The different operating frequencies of the proposed antenna are associated with the lengths of the slanted monopoles, which are determined under quarter wavelength resonance condition. The CPW line is used as a multiband impedance-matching structure. The two grounds are slightly extended for better impedance matching. The proposed antenna is designed to cover the 1800 MHz GSM, 2.4 GHz/5.2 GHz WLAN, and 3.5 GHz WiMAX bands. The measured peak gains and impedance bandwidths are about 4.18/3.83/2.6/2.94 dBi and 410/260/170/520 MHz for the 1550-1960 MHz/2.3-2.56 GHz/3.4-3.57 GHz/5.0-5.52 GHz bands, respectively. The calculated averaged specific absorption rate (SAR) values at all the resonant frequencies are well below the standard limit of 2 W/kg, which ensures its feasibility for wearable applications. The antenna performance under different bending configurations is investigated and the results are presented. The reflection coefficient characteristics of the proposed antenna is also measured for different on-arm conditions and the results are compared. A good agreement between experimental and simulation results validates the proposed design approach.

Impedance Matching Using the Smith Chart

2014 ◽  
Vol 701-702 ◽  
pp. 1158-1161
Author(s):  
Jie Yu ◽  
Wen Dong
Keyword(s):  
Circuit Design ◽  
High Frequency ◽  
Signal Transmission ◽  
Impedance Matching ◽  
Basic Requirement ◽  
Frequency Signal ◽  
High Frequency Signal ◽  
Fast Calculation ◽  
Matching Structure ◽  
Smith Chart

Impedance matching is a basic requirement for high frequency signal transmission, but also a relatively complicated aspect in circuit design. In this article, from the perspective of impedance matching, structure principle and characteristics of Smith chart are introduced. On the basis of Smith chart software, its process of impedance matching is described with a simple example to show the advantages of convenient and fast calculation of Smith chart for impedance matching.

A Small Monopole Antenna with Novel Impedance Matching Structure

2006 ◽  
Author(s):  
Dong-jin Kim ◽  
Young-min Moon ◽  
Se-hyun Park ◽  
Young-eil Kim ◽  
Kyeong-sik Min
Keyword(s):  
Impedance Matching ◽  
Monopole Antenna ◽  
Matching Structure

scholarly journals Study on Double-sided Impedance Matching of Spherical Focusing Transducer in Ultrasonic Abrasive Flow Polishing System

2021 ◽  
Author(s):  
Li Wei ◽  
Hua Li ◽  
Dong Wei
Keyword(s):  
Sound Pressure ◽  
Ultrasonic Transducer ◽  
Impedance Matching ◽  
Matching Theory ◽  
Experimental Result ◽  
Efficient Utilization ◽  
Factors Affecting ◽  
Traditional Structure ◽  
Matching Structure ◽  
Abrasive Flow Polishing

Abstract The impedance matching of ultrasonic focusing spherical transducer is one of the primary factors affecting its work efficiency in ultrasonic focusing flow polishing system. To realize the efficient utilization of the vibration energy of the transducer, there are different requirements for the front and rear matching structure of the transducer. That is, the front matching structure should have high transmittance, and the rear matching structure should have high reflectivity. Based on the acoustic impedance matching theory and Kirchhoff's theory, the Influence of the front & back impedance matching structure of spherical focusing ultrasonic transducer to the focus sound pressure is studied theoretically and experimentally. The new matching structure for spherical focusing transducer is proposed based on above research. The experimental result shows that the focus sonic pressure with the new matching structure is increased by 72.03% compared with the traditional structure.

Impedance matching in active integrated antenna receiver front end design

2000 ◽  
Vol 10 (1) ◽  
pp. 16-18 ◽  
Author(s):  
A.S. Andrenko ◽  
Y. Ikeda ◽  
M. Nakayama ◽  
O. Ishida
Keyword(s):  
Impedance Matching ◽  
Front End ◽  
Active Integrated Antenna ◽  
Integrated Antenna
Sign in / Sign up

Export Citation Format

Share Document