This paper presents a new, compact, dual-frequency design of single-feed circular microstrip antennas with an offset circular slot placed close to the patch boundary. It is found that, when the radius of the offset slot is about 0.38α0.62 times the radius of the circular patch, dual-frequency operat
Reduced-size circular microstrip antenna with dual-frequency operation
β Scribed by Kin-Lu Wong; Shyh-Tirng Fang
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 113 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0895-2477
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β¦ Synopsis
A new design of reduced-size, dual-frequency circular microstrip antenna is presented. The patch-size reduction is achie¨ed by cutting four equally spaced slits at the boundary of the circular patch. The two operating frequencies can be controlled by selecting a suitable disk radius and adjusting the slit lengths. An approximate equation go¨erning the frequency ratio of the two operating frequencies is also gi¨en. Details of the antenna design and experimental results are presented and discussed.
π SIMILAR VOLUMES
Figure Reflection coefficient as a function of the frequency and the resolution interpolation conductivity was chosen in order to obtain a normal theoretical reflection coefficient of 0.001% s y100 dB. Results for the reflection coefficient as a function of frequency are presented in Figure . ## 6
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