were designed to explore the factors that affect the ( 0.3)(W h0.264) resonant frequency. Strain measurement was (3) achieved by bonding the antenna to a cantilever beam and applying loads at the free end of the canti-Assuming that the antenna is subjected to a ten-lever beam, and microstrip antenna sensors that can sile strain ε along its electrical length direction, detect the crack length and propagtion alng diffr-the patch width and the su bstrate thickness will ent orientation with a sub-millimeter resolution was change due to Poisson’s effect, i.e., discussed.

2015 ◽  
pp. 256-260
Keyword(s):  
Resonant Frequency ◽  
Crack Length ◽  
Cantilever Beam ◽  
Strain Measurement ◽  
Microstrip Antenna ◽  
Electrical Length ◽  
Length Direction ◽  
Patch Width

scholarly journals The Effect of Indentation Angle of Koch Fractal Boundary on the Performance of Microstrip Antenna

2008 ◽  
Vol 2008 ◽  
pp. 1-5 ◽  
Author(s):  
P. Nageswara Rao ◽  
N. V. S. N. Sarma
Keyword(s):  
Resonant Frequency ◽  
Experimental Verification ◽  
Microstrip Antenna ◽  
Fractal Boundary ◽  
Triangular Patch ◽  
Resonant Behavior ◽  
Koch Fractal

The effect of indentation angle of Koch fractal boundary applied to a triangular patch on the resonant behavior and bandwidth is presented. It is shown that the resonant frequency can be controlled by changing the indentation angle of the boundary. With the experimental verification, it is established that for an indentation angle of more bandwidth is obtained compared to conventional .

Accurate CAD formulation for resonant frequency of circular sectorial microstrip antenna

2013 ◽  
Author(s):  
Srabani Bhattacharyya ◽  
Dia Ghosh ◽  
Goutam Kumar Singh ◽  
Reema Singh ◽  
Aditya Raj ◽  
...  
Keyword(s):  
Resonant Frequency ◽  
Microstrip Antenna

Resonant frequency of wedge shaped microstrip antenna

1990 ◽  
Vol 26 (13) ◽  
pp. 912 ◽  
Author(s):  
R.K. Mishra ◽  
S.S. Pattnaik
Keyword(s):  
Resonant Frequency ◽  
Microstrip Antenna

Qualification of Polyimide Based Coverlays for 900 MHz and 2.40 GHz Microstrip Antenna Applications

2012 ◽  
Vol 2012 (1) ◽  
pp. 001078-001080
Author(s):  
Deepukumar Nair ◽  
Glenn Oliver ◽  
Jim Parisi
Keyword(s):  
Resonant Frequency ◽  
Radiation Pattern ◽  
Microstrip Antenna ◽  
Microstrip Antennas ◽  
Frequency Detuning ◽  
Antenna Gain ◽  
Test Vehicle ◽  
Minimal Impact ◽  
Frequency Bands

Organic coverlays are required to protect microstrip circuits in most applications. The presence of coverlay can potentially influence the performance of microstrip antennas. This paper describes the qualification of polyimide based coverlays for microstrip antennas both in 900 MHz and 2.50 GHz frequency bands. An Inverted F-shaped antenna fabricated on FR-4 dielectric is used as the test vehicle and two different coverlay materials are tested with respect to key parameters like resonant frequency, S11 bandwidth, antenna gain, frequency detuning, and radiation pattern. The data presented in this paper clearly indicates polyimide materials are well suited to cover microstrip antenna circuits with minimal impact on performance.

scholarly journals Crack length correction and root rotation angle in a sandwich single cantilever beam (SCB) fracture specimen

2020 ◽  
Vol 3 (4) ◽  
pp. 426-434
Author(s):  
Vishnu Saseendran ◽  
Leif A. Carlsson ◽  
Christian Berggreen ◽  
Waruna Seneviratne
Keyword(s):  
Crack Length ◽  
Cantilever Beam ◽  
Rotation Angle ◽  
Fracture Specimen

Miniaturization Design of the 5.8GHz RFID Antenna Based on Metamaterial

2014 ◽  
Vol 577 ◽  
pp. 632-635 ◽  
Author(s):  
Peng Geng ◽  
Shu Hui Yang ◽  
Yue Wang ◽  
Yin Chao Chen
Keyword(s):  
Resonant Frequency ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Ring Resonator ◽  
The Other ◽  
Rfid System ◽  
Relative Bandwidth ◽  
System Requirements ◽  
Original Size

In this paper we designed a 5.8GHZ microstrip antenna whose relative bandwidth is 3.77% and return loss is-36.941dB. It meets the needs of RFID systems.Besides, the resonant frequency of the antennas is reduced to 5.2GHZ, after adding the “I” ring resonator. Also, the paper shows that the other performance of the antenna still meet the RFID system requirements. It is 47.1% of the original size after adjusting the resonant frequency of the antenna to 5. 8GHz.

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