Compact Frequency Reconfigurable Antenna for LTE/WWAN Mobile Handset Applications

Lee, S. W.; Sung, Y.

doi:10.1109/tap.2015.2456940

Cited by 59 publications

(37 citation statements)

References 17 publications

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“…Wireless devices nowadays support multiple application bands including GSM850/900, PCS, DCS, and WCDMA [1]. Moreover, the recently proposed Long Term Evolution (LTE) offers high data rates, greater system capacity, coverage, and improved efficiency by incorporating high performance antennas [2].…”

Section: Introductionmentioning

confidence: 99%

A Compact Frequency Reconfigurable Hybrid DRA for LTE/Wimax Applications

Aqeel

Kamarudin²,

Khan

et al. 2017

International Journal of Antennas and Propagation

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A compact hybrid antenna structure with frequency reconfiguration capabilities is presented in this article. The proposed design employs a combination of a rectangular DR element and a coupling slot on the structure's ground plane (GP). The slot shifts the fundamental DRA mode by introducing a slow wave effect and its resonant behavior helps to achieve an omnidirectional pattern at low frequencies. The slot is loaded with a series of PIN diode switches whose ON/OFF combinations alter the effective slot length. Slot loading with PIN diodes results in frequency reconfiguration of the proposed structure with a large tuning range of 76.2% (between 1.73 and 3.86 GHz). A parametric analysis was performed to investigate the effects of slot length, width, and position on the reflection coefficients of the proposed structure. A prototype of the proposed design was fabricated and results were measured. The measured results show a close agreement with the simulated ones. The proposed design is suitable for DCS 1800 MHz, PCS 1900 MHZ, UMTS, LTE 2500-2700 MHz, and Wimax 3.5 GHz.

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Section: Introductionmentioning

confidence: 99%

A Compact Frequency Reconfigurable Hybrid DRA for LTE/Wimax Applications

Aqeel

Kamarudin²,

Khan

et al. 2017

International Journal of Antennas and Propagation

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“…A number of reconfigurable antennas have been reported. In [4][5][6], the antennas can switch between different resonant frequencies by changing the states of the PIN diodes. In [7], a lumped capacitor is inserted in the middle of a slotted patch antenna, and the operation bands can be tuned continuously.…”

Section: Introductionmentioning

confidence: 99%

Design of Frequency- and Pattern-Reconfigurable Wideband Slot Antenna

Han

Wang

Zhang

et al. 2018

International Journal of Antennas and Propagation

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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. Meanwhile, two additional PIN diodes are inserted in the feed line to achieve the pattern reconfigurability. The wideband operation is realized by using the symmetric slots and fork-shaped feed line. Simulated and measured results show that the antenna provides 25°and 20°beam-steering in 3.4-3.8 and 3.7-4.2 GHz bands, respectively. Also, an impedance bandwidth of at least 12.8% is obtained in the operating bands.

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“…A multiple input multiple output narrow-multiband frequency reconfigurable antenna is presented in [17], places two pin diode RF switches in the radiator to operate at LTE 20 (791-862 MHz) and LTE 7 (2500-2690 MHz) bands. Similarly, in [18][19][20][21], narrowband frequency reconfigurability is achieved by incorporating RF switches between the current path. In the second case, electronically controlled slot resonator(s) of rectangular shaped, L-shaped or of any random shape is incorporated into the radiator or ground plane to achieve the frequency agility.…”

Section: Introductionmentioning

confidence: 99%

Modeling of a PIN Diode RF Switch for Re configurable Antenna Application

2018

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The paper proffers the procedure to model a PIN diode RF switch using full-wave EM solver, HFSS and utilizes the switch to built a simple partial ground plane antenna with omnidirectional radiation pattern. The proposed antenna has ability to tune it from ultra-wideband to narrowband mode. The frequency reconfigurability is accomplished by incorporating a rectangular slot resonator and a PIN diode RF switch embedded in the partial ground plane. The antenna demonstrates -10 dB impedance bandwidth from 500 MHz to 6 GHz in the ultra-wideband mode and 1.125 GHz to 2 GHz in the narrowband mode. A parasitic is stacked in the ground plane to improve the impedance matching and a rectangular slot is fused to explore the bandwidth-limiting possibility of the antenna. The optimization of the antenna is done by full-wave EM solver, HFSS and Specific Absorption Rate (SAR) of the antenna is examined using the equivalent flat tissue phantom. A prototype of the proposed antenna is fabricated and execution is accepted by measured results. The proposed antenna has simple and miniature structure, low SAR (0.41 W/Kg), omnidirectional pattern and low cross-polarization (<-15dB in E-plane and <-30dB in H-plane).

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Compact Frequency Reconfigurable Antenna for LTE/WWAN Mobile Handset Applications

Cited by 59 publications

References 17 publications

A Compact Frequency Reconfigurable Hybrid DRA for LTE/Wimax Applications

A Compact Frequency Reconfigurable Hybrid DRA for LTE/Wimax Applications

Design of Frequency- and Pattern-Reconfigurable Wideband Slot Antenna

Modeling of a PIN Diode RF Switch for Re configurable Antenna Application

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