A Coplanar Reconfigurable Folded Slot Antenna Without Bias Network for WLAN Applications

Anagnostou, Dimitris E.; Gheethan, Ahmad A.

doi:10.1109/lawp.2009.2031989

Cited by 73 publications

(41 citation statements)

References 13 publications

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“…Reconfigurable antennas are gaining popularity as they can offer diversity performances to optimize communication quality and capacity. Frequency reconfigurable antennas [1][2][3] are particularly demanded for cognitive radios where the transceivers need the ability to change the operating frequency band. The switchable polarization antenna [4,5] can be used to mitigate signal fading in multipath propagation environments and reuse frequencies to double transmission channels.…”

Section: Introductionmentioning

confidence: 99%

A Monopole Antenna With Dual-Band Reconfigurable Circular Polarization

Shi¹,

Ding²,

Luo³

2014

PIER C

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Abstract-This paper describes a monopole antenna with dual-band switchable circular polarization (CP) sense in WLAN and WiMAX bands. The proposed antenna consists of a rectangular patch fed by a microstrip line and a ground plane embedded with a T-shaped slot integrated with PIN diodes. The slotted ground is capable of exciting CP sense around 2.45 GHz for WLAN and around 3.4 GHz for WiMAX, respectively. Two triangular strips are added to improve impedance matching. The CP sense of the proposed antenna can be reconfigured between the right-handed circular polarization (RHCP) and left-handed circular polarization (LHCP) by switching the states of PIN diodes in the slot. The lower band 3-dB axial ratio (AR) bandwidth is 8.6%, and the upper band 3-dB AR bandwidth is 20.8%, in which the return loss is less than −10-dB. Simulated analysis and measured results are carried out and good agreement is achieved.

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Section: Introductionmentioning

confidence: 99%

A Monopole Antenna With Dual-Band Reconfigurable Circular Polarization

Shi¹,

Ding²,

Luo³

2014

PIER C

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“…7(e), to isolate the RF signal from the DC and RF choke coil MCL 50-10000 MHz [17,18]. Same PIN diode [19,20] connections are used to connect and disconnect the arc to the main monopole antenna.…”

Section: Introductionmentioning

confidence: 99%

Design Ultra-Wide Bandwidth Monopole Antenna for DVB-T and Wireless Applications

Elsheakh¹,

Abdallah²

2013

PIER C

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Abstract-A novel shape of printed monopole antenna with a combination of Minkowski gasket and Koch fractal technique is presented in this paper. The ultra-wide bandwidth (UWB) antenna is composed of a modified ground plane with two independent elements as cross and Egyptian arc shapes to improve the antenna bandwidth. PIN diode is used to connect or disconnect the circular arc between two bands to switch frequencies from 500 to 2500 MHz and from 4 to 10 GHz. This implemented antenna effectively support personal communication system (PCS 1.85-1.99) GHz, universal mobile telecommunication system (UMTS 1.92-2.17) GHz, wireless local area network (WLAN), which usually operate in the 2.4 GHz (2.4-2.484 GHz) and 5.2/5.8 GHz (5.15-5.35 GHz/5.725-5.825 GHz) bands, mobile worldwide interoperability for microwave access and WiMAX, which operate in the range from 2.305 to 2.360 GHz, from 2.5 to 2.69 GHz and from 5.25 to 5.85 GHz bands. The properties of the antenna as reflection coefficient, efficiency, radiation patterns and gain are simulated and approved by the experimental results.

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“…These are generally divided into two main categories: the frequency tunable and pattern diversity antennas. For frequency tunable antennas, much attention has been given to reconfigurable slot antenna designs [1][2][3][4] due to the flexibility of slots in integrating electronic switches. The frequency tuning characteristics of a slot antenna can be achieved by changing the slot effective length [1][2][3] or by switching the connection between the feed and the ground [4].…”

Section: Introductionmentioning

confidence: 99%

“…For frequency tunable antennas, much attention has been given to reconfigurable slot antenna designs [1][2][3][4] due to the flexibility of slots in integrating electronic switches. The frequency tuning characteristics of a slot antenna can be achieved by changing the slot effective length [1][2][3] or by switching the connection between the feed and the ground [4]. Apart from using ground slots, frequency reconfigurability can also be achieved by changing the induced current distribution [5] or varying the ground plane electrical length [6] supporting a patch antenna.…”

Section: Introductionmentioning

confidence: 99%