Single feed antenna with radiation pattern diversity

Low, L.; Langley, Richard

doi:10.1049/el:20045586

Cited by 18 publications

(7 citation statements)

References 2 publications

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“…Pattern reconfigurable antennas can be designed with low cost and simple design mechanism by the use of quasi-Yagi concepts. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] In a Yagi-Uda antenna, the radiation characteristics of a driven dipole antenna is switched to a directive pattern by optimizing the lengths and spacing of the parasitic elements loaded on both the sides of the driven dipole. As controlling the spacing is bit difficult, the resonance frequency of the parasitic elements is controlled by varying the lengths of parasitic elements.…”

Section: Introductionmentioning

confidence: 99%

“…The length of the parasitic elements with respect to the driven element can be controlled electronically by embedding switches with them [2][3][4][5][6][7][8][9][10] or loading them with complex impedances. [12][13][14] Apart from the quasi-Yagi concepts, pattern reconfigurability can also be achieved by suitable use of switches [17][18][19] with the driven antenna element to excite different modes in a common bandwidth. In Ref.…”

Section: Introductionmentioning

confidence: 99%

“…The recent works have yielded many other possibilities on the design of pattern reconfigurable antennas. Pattern reconfigurable antennas can be designed with low cost and simple design mechanism by the use of quasi‐Yagi concepts . In a Yagi‐Uda antenna, the radiation characteristics of a driven dipole antenna is switched to a directive pattern by optimizing the lengths and spacing of the parasitic elements loaded on both the sides of the driven dipole.…”

Section: Introductionmentioning

confidence: 99%

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Multi-band pattern reconfigurable Yagi-Uda antenna

Saurav

Sarkar

Srivastava

2017

Int J RF Microw Comput Aided Eng

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In this study, novel designs of single‐band and tri‐band pattern reconfigurable antennas are proposed. The design of single‐band pattern reconfigurable antenna is accomplished by the use of varactor diodes with the parasitic elements placed on both sides of the driven conventional printed dipole antenna. By tuning the capacitance of varactor, the antenna operates in four different configurations of radiation pattern which include bi‐directional end‐fire, broadside, and uni‐directional end‐fire radiation patterns. The tri‐band pattern reconfigurable antenna design is achieved by the use of parasitic elements on both sides of a tri‐band driven dipole antenna. Dual‐band LC resonators are used as loading elements along the arms of printed dipole to get two lower order modes in addition to the reference dipole mode, resulting in a triband operation of the driven element. The electrical lengths of the parasitic elements with respect to the tri‐band driven element are controlled by suitably embedding varactor and PIN diodes with them. The proposed tri‐band antenna operates in ten different configurations of radiation patterns in the three operating bands. Fully functional prototypes of single‐band and tri‐band pattern reconfigurable antennas along with the DC bias networks have been fabricated to validate the results obtained in simulation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multi-band pattern reconfigurable Yagi-Uda antenna

Saurav

Sarkar

Srivastava

2017

Int J RF Microw Comput Aided Eng

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“…However, in these reconfigurable antennas, the pattern diversity is not achieved. The pattern diversity technology is used to prevent the fade of the radio channel by the multipath propagation [4][5][6][7]. Yang et al [8] demonstrated the conical and the broadside reconfigurable modes in the radiation pattern that are excited separately by two different sets of L-shaped probes, and the antenna can be used as a pattern diversity system for mobile communications.…”

Section: Introductionmentioning

confidence: 99%

A high-gain dual-band directional/omnidirectional reconfigurable antenna for WLAN systems

Ding

Jin

Geng

et al. 2008

Int J RF and Microwave Comp Aid Eng

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A high-gain dual-band antenna for the wireless local area network system is presented in this article. Two symmetrical linear arrays can be dynamically reconfigured that could switch radiation pattern with a switchable feed circuit between direction and omnidirection. The antenna can also be used for a pattern diversity antenna for the multiple-input-multiple-output communication systems. The design process for the antenna system is given, and the parameters and characteristics of the antennas are achieved by the method. Measured return losses, isolation, and radiation patterns are in good agreement with the simulated ones, which illustrates that the method is valid and the antenna system can be integrated with pattern reconfigurable and pattern diversity applications.

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“…However, to keep costs down, a single hidden antenna is deployed on many lower range cars. The performance of a single active antenna can be improved by employing switched parasitic antennas whose load phasing can be varied [9]. An alternative diversity antenna was reported in [10] where a planar printed antenna was placed under a plastic panel in the roof of a vehicle.…”

Section: Introductionmentioning

confidence: 99%