Circularly polarised conical beam radial line slotantenna

Takada, Jun‐ichi; Tanisho, A.; Ito, Kei; Ando, M.

doi:10.1049/el:19941223

Cited by 40 publications

(14 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other printed CP antenna designs were also investigated, such as the two crossed dipoles, in which the conical beam is attained by increasing the distance between the reflector and the crossed dipoles [3]. A simple radial waveguide technique is used to achieve CP conical beam for a slot antenna, in which the slot pairs are arranged in a rotational method to allow a null to appear in the broadside direction [4]. The method of designing a single element CP antenna and reconstructing it as an array design of a specific layout Manuscript and feeding mechanism (cross-feed) was introduced to achieve a higher gain and conical beam by integrating the broadside pattern of each array element [5].…”

Section: Introductionmentioning

confidence: 99%

Conical Beam Array Antenna With Polarization Diversity

Sim

2012

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

This study designed a 2 2 circular disc array antenna with omnidirectional radiation pattern and polarization diversity. Each disc element was located above a circular slot fed by an L-shaped strip, in which the switching between two orthogonal linear polarizations (LP) and circular polarization (CP) were realized by controlling two pin diodes. To allow conical beam for all polarization senses, a meticulously designed cross-shaped feeding network is proposed, and besides showing a sufficient 10 dB return loss bandwidth that covers the 2.4 GHz band of WLAN operation, good cross-polarization level (XPL) were measured when the array operated in all available polarization senses.

show abstract

Section: Introductionmentioning

confidence: 99%

Conical Beam Array Antenna With Polarization Diversity

Sim

2012

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

show abstract

“…This antenna employs a hybrid feeding mechanism that involves both L-probe and aperture feeding techniques. Compared with the antennas as described above [1][2][3][4][5][6][7][8], it can achieve wide impedance bandwidth, wide axial ratio bandwidth, low profile and high gain simultaneously.…”

Section: Introductionmentioning

confidence: 99%

“…To solve this problem, a stacked configuration is employed and 8% bandwidth is obtained [2]. After nearly a decade, an antenna with a ring of perpendicular slot pairs cut on the top surface of a circular or a spherical conducting cavity, which is fed by a coaxial probe at its bottom surface, is proposed [3,4]. They have the features of simple feeding structure and wide axial ratio Manuscript bandwidth, however, narrow impedance bandwidth (~4%) can only be obtained.…”

Section: Introductionmentioning

confidence: 99%

A Wideband Circularly Polarized Patch Antenna with Conical Radiation Pattern

Lau

Luk

2005

TENCON 2005 - 2005 IEEE Region 10 Conference

View full text Add to dashboard Cite

A circularly polarized conical-beam patch antenna that employs a hybrid feeding mechanism for wideband operation is presented in this paper. It is implemented through using a pair of L-probes and apertures, which are connected by the feeding network, to excite the circular patch in orthogonal directions. The patch is supported by two plastic posts of 0.084 λ 0 height in the air, whereλ 0 is the free space wavelength at 2.53GHz. This antenna possesses an impedance bandwidth of 28.2% (SWR < 1.5) and an axial ratio bandwidth (AR < 3dB) of 28.3%. Also, it has left hand circularly polarized (LHCP) conical patterns with the peaks located at around θ = ±33 0 over these bandwidths. Moreover, its 3-dB gain bandwidth and peak gain are 32.4% and 5.5dBi, respectively.

show abstract

“…Antennas based on narrow slots direcUy coupied to a radial line have been used previously in Direct Broadcast Satellie (DBS) receivers [1] and mobile corrmnunicatis [2]. One of the most inportant features for such antennas is their low cost and low loss feeding line.…”

Section: Introductionmentioning

confidence: 99%