Two-arm microstrip spiral antenna with a circular aperture on the ground plane for generating a circularly polarized conical beam

2004 ◽  
Author(s):  
Daeyoung Oh ◽  
Ikmo Park
Keyword(s):  
Ground Plane ◽  
Circular Aperture ◽  
Spiral Antenna ◽  
Circularly Polarized ◽  
Conical Beam

A Wideband Circularly Polarized Conical Beam From a Two-Arm Spiral Antenna Excited in Phase

2011 ◽  
Vol 59 (10) ◽  
pp. 3518-3525 ◽  
Author(s):  
Hisamatsu Nakano ◽  
Hiroshi Oyanagi ◽  
Junji Yamauchi
Keyword(s):  
Spiral Antenna ◽  
Circularly Polarized ◽  
Conical Beam

Wideband Conical-Beam Circularly Polarized Microstrip Antenna for Large Ground Plane

2015 ◽  
Vol 63 (10) ◽  
pp. 4614-4619 ◽  
Author(s):  
Dan Yu ◽  
Shu-Xi Gong ◽  
Yang-Tao Wan ◽  
Wen Jiang
Keyword(s):  
Microstrip Antenna ◽  
Ground Plane ◽  
Circularly Polarized ◽  
Conical Beam

scholarly journals A Low-Profile Circularly Polarized Conical-Beam Antenna with Wide Overlap Bandwidth

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Wei He ◽  
Yejun He ◽  
Long Zhang ◽  
Sai-Wai Wong ◽  
Wenting Li ◽  
...  
Keyword(s):  
Electric Field ◽  
Patch Antenna ◽  
Ground Plane ◽  
Axial Ratio ◽  
Impedance Bandwidth ◽  
Beam Radiation ◽  
Circularly Polarized ◽  
Low Profile ◽  
Two Sides ◽  
Conical Beam

In this paper, a low-profile circularly polarized (CP) conical-beam antenna with a wide overlap bandwidth is presented. Such an antenna is constructed on the two sides of a square substrate. The antenna consists of a wideband monopolar patch antenna fed by a probe in the center and two sets of arc-hook-shaped branches. The monopolar patch antenna is loaded by a set of conductive shorting vias to achieve a wideband vertically polarized electric field. Two sets of arc-hook-shaped parasitic branches connected to the patch and ground plane can generate a horizontally polarized electric field. To further increase the bandwidth of the horizontally polarized electric field, two types of arc-hook-shaped branches with different sizes are used, which can generate another resonant frequency. When the parameters of the arc-hook-shaped branches are reasonably adjusted, a 90° phase difference can be generated between the vertically polarized electric field and the horizontally polarized electric field, so that the antenna can produce a wideband CP radiation pattern with a conical beam. The proposed antenna has a wide impedance bandwidth ( ∣ S 11 ∣ < − 10   dB ) of 35.6% (4.97-7.14 GHz) and a 3 dB axial ratio (AR) bandwidth at phi = 0 ° and theta = 35 ° of about 30.1% (4.97-6.73 GHz). Compared with the earlier reported conical-beam CP antennas, an important feature of the proposed antenna is that the AR bandwidth is completely included in the impedance bandwidth, that is, the overlap bandwidth of ∣ S 11 ∣ < − 10   dB and AR < 3   dB is 30.1%. Moreover, the stable omnidirectional conical-beam radiation patterns can be maintained within the whole operational bandwidth.

scholarly journals Two-arm microstrip spiral antenna with a circular aperture on the ground plane

2002 ◽  
Vol 35 (6) ◽  
pp. 453-455 ◽  
Author(s):  
Daeyoung Oh ◽  
Myungki Kim ◽  
Ikmo Park
Keyword(s):  
Ground Plane ◽  
Circular Aperture ◽  
Spiral Antenna
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