Frequency And Pattern Reconfigurable Slot Antenna

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A pattern reconfigurable U-slot antenna on a microwave substrate is presented. The antenna consists of a U-slot patch and eight shorting posts. Each edge of the square patch is connected to two shorting posts by PIN diodes. By switching between the different states of the PIN diodes, the proposed antenna can radiate boresight or conical patterns; moreover, the position of the main lobes of the.
A wideband slot antenna with frequency- and pattern-reconfigurable characteristics for TD-LTE (3.4–3.8 GHz) and C-band (3.7–4.2 GHz) applications is proposed. The antenna consists of two symmetric slots that are fed by a fork-shaped microstrip line. Two PIN diodes are loaded in the slots to produce two different frequency bands.
A slot antenna having the characteristics of frequency and the pattern reconﬁgurability using PIN diodes is reported in. The antenna uses two switches on the slot to produce multiple resonant bands, while the four slits along with the switches produce pattern.

Design of Frequency- and Pattern-Reconfigurable Wideband Slot Antenna. By Liping Han, Caixia Wang, Wenmei Zhang, Runbo Ma and Qingsheng Zeng.

Source

2010 IEEE Antennas and Propagation Society International Symposium>1 - 4

Abstract

A pattern reconfigurable U-slot antenna on a microwave substrate is presented. The antenna consists of a U-slot patch and eight shorting posts. Each edge of the square patch is connected to two shorting posts by PIN diodes. By switching between the different states of the PIN diodes, the proposed antenna can radiate boresight or conical patterns; moreover, the position of the main lobes of the conical pattern can also be changed between two orthogonal planes of the conical beam. The predicted overlapping impedance bandwidth ( s₁₁ ≤-10 dB) is 6.5% with a center frequency of 5.24GHz. Preliminary theoretical results on impedance bandwidths and radiation patterns for the different states of the reconfigurable antenna are described.

Identifiers

book ISSN :	1522-3965
book ISBN :	978-1-4244-4967-5
book e-ISBN :	978-1-4244-4968-2
DOI	10.1109/APS.2010.5561803

Authors

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Frequency And Pattern Reconfigurable Slot Antenna

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Qin, P.Y.

CSIRO ICT Centre, Epping, NSW, Australia

Weily, A.R.

CSIRO ICT Centre, Epping, NSW, Australia

Guo, Y.J.

CSIRO ICT Centre, Epping, NSW, Australia

Liang, C.H.

Nat. Key Lab. of Antenna & Microwave Technol., Xidian Univ., Xi'an, China

Keywords

slot antennasantenna radiation patternsmicrostrip antennasfrequency 5.24 GHzpattern reconfigurable U-slot antennamicrowave substratepatch antennaPIN photodiodesMicrowave antennasResonant frequencyPatch antennas

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Source

2007 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications>516 - 518

Abstract

This paper proposed a frequency reconfigurable CPW center-fed slot antenna. Four pin-diodes are utilized to switch the length of the slot. By tuning the different pairs of diodes on or off, three resonant frequency bands can be obtained. The simulated and measured results validate this concept. This antenna architecture is interesting for wireless applications because it is easily fabricated and integrated with RF circuitry.

Identifiers

book ISBN :	978-1-4244-1044-6
book e-ISBN :	978-1-4244-1045-3
DOI	10.1109/MAPE.2007.4393668

Authors