Design and experimental validation of dual‐band circularly polarised horn filtenna

In recent year, various filtenna circuits have been developed satisfying the objectives and prerequisites of wireless communication. Some of these developed designs are new or some are the improved version of previous works whereas the others are the combination of conventional methods. This article presents the review of filtenna circuits starting from the beginning to the improvements until date. This article starts with brief overview of various filters with their design strategies and ends in its implementation in filtenna designs followed by discussion on several filtenna designs in term of size and overall performances. Among various designs, bandpass, and bandstop filters are extensively used in filtenna realization as it provides a better selectivity in desired band. Various planar filtenna circuits, based on either defected ground structure (DGS) or resonator or SIW filters are reviewed and presented. Besides, planar filtennas, these filters are also integrated to the aperture of horn antennas for the realization of horn filtennas, applicable for high frequency operations. It is observed that SIW based filtennas exhibited narrow impedance bandwidth. This feature can be improved by doubling substrate layer as well as the number of metallic ways. Whereas, resonator based filtennas use resonator based filters along with DGSs to enhance impedance bandwidth as well as minimize mutual coupling and cross‐polar radiation. Apart from single element filtenna, filtenna arrays, and reconfigurable filtennas (including planar and horn reconfigurable filtennas) are presented. This review article may be helpful for beginners working on filtenna circuits and also such a review process is not available in the open literature to the best of author's knowledge.

Section: Filtennamentioning

confidence: 99%

Filtennas for wireless application: A review

Mishra

Lalitha

2019

“…System performance will be deteriorated due to introduced mutual couplings between bands when these frequency bands are close to each other. Hence, combination of antennas and filters into one device is extensively researched in recent years . Furthermore, large roll‐off level is required for filtering antenna design.…”

Section: Introductionmentioning

confidence: 99%

“…However, it will cause extra material loss and spatial consumption. Dual‐band filtering antenna with orthogonal polarization is an alternative solution, and related applications have been reported in Reference . In conclusion, multifunctional components especially such as dual‐band filtering antenna attract more and more attention in wireless communication system designing.…”

Section: Introductionmentioning

confidence: 99%

Design of dual‐mode dual‐band rectangular waveguide filtering antenna

Chen

Zhang

et al. 2019

A dual-mode dual-band rectangular waveguide filtering antenna with fourth-order Chebyshev response is presented. First, design equations and processes of filtering networks are presented. Then, filtering antenna is constructed through cross-shaped slot for radiation instead of the output port of filtering networks. A pair of degenerated modes are exploited in waveguide resonator design to miniaturize the whole size and form two passbands. In addition, the bandwidth can be adjusted flexibly in proper range. A prototype at C-band is fabricated and measured, showing two operation channels of 5 to 5.05 GHz and 5.1 to 5.15 GHz with high rejection between two bands. Good agreement is achieved between the simulations and measurements, showing excellent performance in terms of filtering, out-of-band rejection, and gain in bands. K E Y W O R D Sfiltering antenna, dual-band filter, waveguide filter, degenerated mode.

“…Consequently, various kinds of CP antennas have been presented in the literature, and the most representative schemes include helix antennas, 7 microstrip patches, 8,9 slot antennas, 10 cross dipoles, 11 magnetic-electric dipoles, 12 and horn antennas. [13][14][15][16][17][18][19][20] For example, a slotted hollow ring element is presented for Ku-band high-efficiency CP reflectarray. 9 And an increasing number of reported works used metamaterial-based multifunctional devices to achieve the polarization conversion from a linear polarization wave to circular polarization wave.…”

Section: Introductionmentioning

confidence: 99%

“…However, with the rapid development of wireless communication technique, circularly polarized (CP) antennas are widely used in areas such as global positioning system, navigational systems, military‐phased array radars, and satellite communication due to the robustness to multipath distortion and immunity to polarization mismatch losses. Consequently, various kinds of CP antennas have been presented in the literature, and the most representative schemes include helix antennas, microstrip patches, slot antennas, cross dipoles, magnetic‐electric dipoles, and horn antennas …”

Section: Introductionmentioning

confidence: 99%

Compact wideband circularly polarized horn antenna with tapered slot‐coupled feeding for Ku‐band applications

Zheng

Duan

Hao

et al. 2019

A compact wideband circularly polarized (CP) horn antenna with slot‐coupled feeding structure at Ku band for satellite communication is devised. The proposed design is based on a square aperture horn antenna with two orthogonal ridges, which is fed by nonuniform curved slot along the diagonal of the horn on the bottom cavity. And in order to improve the impedance matching, a staircase typed ridge is connected the feeding probe as a matching network. Moreover, two orthogonal ridges are excited with a tapered slot coupled by the staircase ridges via feeding probe. Wideband CP performance is achieved with an overall physical dimension of 9 mm × 9 mm × 14 mm (0.045λ0 × 0.045λ0 × 0.07λ0 at frequency of 15 GHz). It is experimentally demonstrated that the proposed antenna achieves: a wide 10‐dB return loss bandwidth of about 2.4 GHz, a 3‐dB axial ratio bandwidth of 1 GHz, and a peak gain of 6.5 dBi.