Reconfigurable microstrip antenna with polarisation diversity and frequency agility

Hu, Cheng-Chi; Chen, T.-R.; Wu, Jheng-Yu; Row, Jeen‐Sheen

doi:10.1049/el:20071614

Cited by 22 publications

(8 citation statements)

References 4 publications

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“…Since the patch antenna connected to port 3 was off-resonant, the input impedance of the antenna was almost reactive (Z L2 ). Hence, the input impedance of the lower branch Z in2 was (2) When the patch antenna was off-resonant, its input reactance neared zero (x 0). Using x 0 in (2), the input impedance of the port 2 neared to infinite (Z in2 ).…”

Section: Switchable Feed Networkmentioning

confidence: 99%

“…A number of reconfigurable solutions in order to obtain a microstrip patch antenna diversity have been investigated, including having two orthogonal slots in the patch [1], truncating the corners of the patch using pin diodes [2]- [4], and using radio frequency micro-electrical mechanical system (RF MEMS) switches [5]. Although these solutions make use of the RF-switching devices such as PIN diodes or MEMS switches, it has the drawback that a DC bias circuit is required for switching.…”

Section: Introductionmentioning

confidence: 99%

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Switchable feed network using microstrip/negative-refractive-index coupled-line coupler

Lee

2011

2011 IEEE International Symposium on Antennas and Propagation (APSURSI)

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This paper presents a single-feed switchable feed network that combines four ports of the microstrip patch antennas using the two microstrip/negative-refractive-index (MS/NRI) coupled line coupler. When a two-way quarter wavelength transmission lines, which are terminated by an antenna and each resonant frequency of the antennas is very closely located, it acts as an ideal single-pole double-throw (SPDT) switch. The MS/NRI coupled line coupler was used to achieve tight backward-wave coupling (-3 dB) and port isolation. For verification purposes, a two by two microstrip patch array antenna for wideband code division multiple access (WCDMA) frequency bands (1.92 GHz -2.17 GHz) was built and tested.Keywords-Coupled-line coupler; switchable feed structure; microstrip patch arry antenna; microstrip/negative-refractive-index (MS/NRI-TL).

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Section: Switchable Feed Networkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Switchable feed network using microstrip/negative-refractive-index coupled-line coupler

Lee

2011

2011 IEEE International Symposium on Antennas and Propagation (APSURSI)

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“…Reconfigurable antennas allow the reuse of the existing volume to operate at different frequency bands [2,6], permit beam steering [2,7,13] and ability to change polarization [2,8,9]. Integrating DRA with reconfigurability is a promising technology for high performance wireless communication systems.…”

Section: Introductionmentioning

confidence: 99%

A Dual Band Frequency and Pattern Reconfigurable Dielectric Resonator Antenna

Alsath¹,

Bilvam²,

Kanagasabai³

et al. 2012

PIER C

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Abstract-A new approach to obtain frequency and pattern reconfiguration in Dielectric Resonator Antenna (DRA) has been proposed. The design consists of two identical aperture coupled DRAs separated by a distance of λ 0 . A switchable feed based frequency reconfiguration is discussed in which the feed acts as an ideal switch. This design operates at two frequencies viz., 3.6 GHz and 5.2 GHz. These frequencies are independently tuned using trimmers. Further, the slot length of both the DRAs can be tuned independently using movable shorting pins driven by miniature motors. The shorting pins form a part of the ground plane. By varying the slot length of the DRA, the resonant frequency is controlled which in turn helps in gaining pattern reconfiguration. The structure has been designed for lower and middle band frequencies of WLAN, operating between 5.15-5.25 GHz and 5.25-5.35 GHz, respectively. These types of antennas can be employed in MIMO systems for increasing the capacity through Pattern diversity.

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“…Moreover, they can be designed at a specific resonant mode to radiate the required radiation pattern and polarization for the applications of wireless communication systems [1]. With the increase in demand for multifunction antennas in recent years, reconfigurable antennas have become an attractive option [2].…”

Section: Introductionmentioning

confidence: 99%

“…Optical soliton has been recognized as a nonlinear solitary wave for years [1,2]. Since then, it has been found in several subjects …”

Section: Introductionmentioning

confidence: 99%

An equilateral‐triangular microstrip antenna with polarization diversity

Sung

2009

Micro & Optical Tech Letters

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An equilateral‐triangular microstrip antenna with reconfigurable polarization capability is proposed. The proposed design is achieved by loading with three L‐type slits in the triangular patch and three PIN diodes are utilized to switch the slits on or off. According to the states of the diodes, the reconfigurable antenna can produce linear polarization or right hand circular polarization. An antenna prototype is implemented and measured. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1372–1374, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24306

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Reconfigurable microstrip antenna with polarisation diversity and frequency agility

Cited by 22 publications

References 4 publications

Switchable feed network using microstrip/negative-refractive-index coupled-line coupler

Switchable feed network using microstrip/negative-refractive-index coupled-line coupler

A Dual Band Frequency and Pattern Reconfigurable Dielectric Resonator Antenna

An equilateral‐triangular microstrip antenna with polarization diversity

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