Reconfigurable Yagi-Uda Substrate for RCS Reduction of Patch Antenna

Zhao, Shu-Chen; Wang, Bing‐Zhong; Shao, Wei

doi:10.2528/pierb08120101

Cited by 9 publications

(3 citation statements)

References 17 publications

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“…As a classic antenna, due to its high directivity, simple structure, easy to feed and low cost, Yagi-Uda antenna is widely used in wireless communications, but the bandwidth of the antenna is narrow. Throughout the last several years, there have been many contributions in the design and optimization of Yagi-Uda antenna for specific applications [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. For example, a small and slim printed Yagi-Uda antenna was designed for vehicle GPRS system application [15].…”

Section: Introductionmentioning

confidence: 99%

Dual-Band Yagi-Uda Antenna for Wireless Communications

Qi¹,

Zhang²,

Sun³

et al. 2010

PIER Letters

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A novel Yagi-Uda antenna with dual-band (915-935 MHz and 1760-1805 MHz) is presented. Branch structures are used to realize dual-band performance. The geometrical parameters for the branch structures are optimized to explore the antenna to operate satisfactorily in the two bands. Prototype is manufactured and measured, and the results are in good agreement with the simulated ones. In the two operating bands, the proposed antenna achieves directional radiation and the performances that VSWR < 2, gain 5-6.6 dBi and front-to-back ratio 6-9.1 dB, making it suitable for the non-fixed base station backhaul in wireless communications.

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Section: Introductionmentioning

confidence: 99%

Dual-Band Yagi-Uda Antenna for Wireless Communications

Qi¹,

Zhang²,

Sun³

et al. 2010

PIER Letters

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“…The size of the substrate dimension and the ground plane is optimized in order to achieve optimum beam tilt angle and similar gain in all beam-steered directions. A comprehensive treatment on the Yagi-Uda concept can be found in [15].…”

Section: Stage 1: Proof Of Conceptmentioning

confidence: 99%

Electronically Reconfigurable Beam Steering Antenna Using Embedded Rf Pin Based Parasitic Arrays (Erppa)

Sabapathy¹,

Jamlos²,

Ahmad³

et al. 2013

PIER

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Abstract-In this paper, an electronically reconfigurable beam steering antenna using embedded RF PIN switches based parasitic array (ERPPA) is proposed for modern wireless communication systems that operate at 5.8 GHz frequency. In the proposed antenna, a single driven element is fed by a coaxial probe, while each of the two parasitic elements is integrated with an RF PIN switches that embedded inside the substrate. In the conventional reconfigurable antennas, the RF PIN switches are mounted on narrow slots created on the top or bottom layer of the radiator/parasitic elements, which could lead to the dimensional changes of the antenna and degrade the performance in terms of beam steering and return loss. However, this research proposes an exclusive solution where the RF PIN diodes at parasitic elements are embedded inside the substrate thus no additional slots have to be created to mount the SMCs on the antenna. In this regard, the proposed antenna is highly competent to eliminate the intermodulation effect generated by the RF PIN diodes and the other passive elements associated with the PIN diodes. In this research, extensive investigations revealed that the parasitic element dimension and the selection of RF PIN switches significantly influence • are achieved in the xz -plane with measured peak gains at θ = −30 • , 0 • and +30 • are 6.5 dBi, 6.5 dBi and 4.9 dBi, respectively. The fabricated antenna with Taconic substrate provides a good agreement with the simulation result. Furthermore, the performance of ERPPA is further tested by outdoor measurement using a wireless bridging system to verify the functionality of the designed antenna at the angles of −45• . The analysis with the switched diversity combining scheme has demonstrated that a maximum diversity gain approximately of 12 dBi is offered by the proposed antenna. With a compact dimension of 32 mm by 76 mm, the proposed antenna is a potential candidate in point-to-point wireless applications such as WIFI application.

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“…RCS reduction is realized by using two circular apertures in the patch, a defected ground structure (DGS) and a shorting post with a gain decrease of 2.3 dB [10]. A reconfigurable Yagi-Uda substrate is put on the top of a patch antenna to reduce the RCS [11]. Cutting slots on the patch or the ground plane and using an FSS as the ground of a reflectarray antenna are used to realize the RCS reduction [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

An Electronically Controllable Method for Radar Cross Section Reduction for a Microstrip Antenna

Shang¹,

Xiao

Li³

et al. 2012

PIER

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Abstract-PIN diodes are used to electronically switch a rectangular microstrip antenna between the optimal radiation state and the low radar cross section (RCS) state in this paper. A useful loading circuit is proposed. The circuit is connected between the patch and the ground plane of the antenna at each loading position. The loading positions of the circuit are determined by studying magnitude distributions of the induced electric field and analyzing statistically how many times that the maximum electric field occurs in each area for each discussed incident angle. PIN diodes are equivalent to capacitances and resistances when diodes are reverse-biased and forward-biased, respectively. When the antenna is not in service and excited by an incident plane wave, obvious RCS reduction is realized. In addition, the radiation performances are well maintained when the antenna is in service for transmitting or receiving signals.

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Reconfigurable Yagi-Uda Substrate for RCS Reduction of Patch Antenna

Cited by 9 publications

References 17 publications

Dual-Band Yagi-Uda Antenna for Wireless Communications

Dual-Band Yagi-Uda Antenna for Wireless Communications

Electronically Reconfigurable Beam Steering Antenna Using Embedded Rf Pin Based Parasitic Arrays (Erppa)

An Electronically Controllable Method for Radar Cross Section Reduction for a Microstrip Antenna

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