Figure 10 Loci of frequency and location versus distance where double nulls and strong double dips are occurring for x s y10 m in s Ε½ . Ε½ . the lossless dielectric media of β s 1.8, 2, 3. a Frequency. b r Location dip separation distance converges to the cavity size as the source point approaches th
Single-feed circularly polarized microstrip antenna with a slit
β Scribed by Kin-Lu Wong; Wen-Hsiu Hsu; Chun-Kun Wu
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 146 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
β¦ Synopsis
A new and simple technique for obtaining circular polar-( )
ization CP radiation of a single-feed microstrip antenna is demonstrated. This CP design is achie¨ed by insetting a single slit to the boundary of the microstrip patch, and placing a single feed along an axis 45Рto the one containing the slit. Applications of this CP design method to square and circular microstrip antennas ha¨e been implemented. Typical experimental results are presented and discussed.
π SIMILAR VOLUMES
A circularly polarized antenna, realized in a low-cost technology with an integrated feed, is presented for the land-mobile satellite seruice. This antenna presents large bandwidth, high gain, and good axial ratio in all frequency ranges.
Figure 4 Signal gain and noise figure as a function of laser wavelength The effects of the laser wavelength on the probe signal at s 1550 nm are given in Figure 4. As mentioned earlier, s the presence of an oscillating laser signal within the wavelength range of 1528α1533 nm reduces the upper level
Figure 3 Results of Example 2 with additive colored Gaussian Ε½ . Ε½ . noise. a Output beam patterns under correct steering. b Output SINR versus pointing error. w x algorithm 3 in terms of estimation sensitivity to parameter uncertainty and reduction of the peak of the error spectrum.
The design of a single-feed, reduced-size circularly polarized circular microstrip antenna with four slits equally spaced and inset at the boundary of the circular patch is experimentally in¨estigated. Results show that by increasing the slits' lengths to be about 0.8 times the disk radius, the circ
Figure 8 S PS1 and PS2 curves and differential phase shift behavior DIFF curve for a phase shifter with N s 4, Z s 100 β, 21 c u s 33 β, β¬ s 90Π tot problem of implementing impractical values for the susceptance ratio Rb therefore can be overcome by utilizing a larger number of cascaded cells. ## C