A frequency-reconfigurable antenna for internal mobile handset applications

2014 ◽  
Vol 56 (6) ◽  
pp. 1366-1371 ◽  
Author(s):  
Youngje Sung
Keyword(s):  
Reconfigurable Antenna ◽  
Mobile Handset ◽  
Frequency Reconfigurable Antenna

A frequency reconfigurable antenna for multiband mobile handset applications

2017 ◽  
Vol 27 (9) ◽  
pp. e21143 ◽  
Author(s):  
Xiaoyan Zhang ◽  
Miao Tian ◽  
Aiyun Zhan ◽  
Zhiwei Liu ◽  
Haiwen Liu
Keyword(s):  
Reconfigurable Antenna ◽  
Mobile Handset ◽  
Frequency Reconfigurable Antenna

scholarly journals Small-Size Eight-Band Frequency Reconfigurable Antenna Loading a MEMS Switch for Mobile Handset Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Xin Meng
Keyword(s):  
Reconfigurable Antenna ◽  
Rf Switch ◽  
Band Frequency ◽  
Mems Switch ◽  
Lower Band ◽  
Resonant Modes ◽  
The One ◽  
Mobile Handset ◽  
Total Dimension ◽  
Frequency Reconfigurable Antenna

A planar small-size eight-band frequency reconfigurable antenna for LTE/WWAN mobile handset applications is proposed. The proposed antenna consists of a feeding strip and a coupled strip, with a total dimension of 10 × 29.5 mm2. Reconfigurability is realized by incorporating a one-pole four-throw RF switch, which is embedded in the coupled strip and changes the resonant modes for the lower band. By combining four different working modes, the proposed antenna successfully realize the eight-band operation, covering the operating bands of 700~787 MHz, 824~960 MHz, and 1710~2690 MHz. In addition, the simple DC bias circuit of the RF switch has little effect on the antenna performances, with no significant reduction in antenna efficiency and variations in the radiation patterns. The measured antenna efficiencies are 40%~50% and over 60% for the lower band and the upper band, respectively. Prototypes of the proposed frequency reconfigurable antenna incorporating the one-pole four-throw switch are fabricated and measured. The measured results including return losses and radiation characteristics are presented.

scholarly journals A Compact Frequency Reconfigurable Antenna for LTE Mobile Handset Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Munyong Choi ◽  
Hyunho Wi ◽  
Byeonggwi Mun ◽  
Yonghyun Yoon ◽  
Hyunwoo Lee ◽  
...  
Keyword(s):  
High Frequency ◽  
Low Frequency ◽  
Optimal Location ◽  
Total Efficiency ◽  
Reconfigurable Antenna ◽  
Pin Diode ◽  
Pin Diodes ◽  
Mobile Handset ◽  
State 1 ◽  
Frequency Reconfigurable Antenna

A compact (8 × 62 × 5 mm3; 2.48 cc) frequency reconfigurable antenna that uses electrical switching with PIN diodes is proposed for the low frequency LTE band (699 MHz–862 MHz), high frequency LTE band (2496 MHz–2690 MHz), GSM850/900 bands (824 MHz–960 MHz), and DCS/PCS/WCDMA bands (1710 MHz–2170 MHz). The penta-band PIFA is first designed for GSM850/900/DCS/PCS/WCDMA bands by using two slits and ground pins within a limited antenna volume (8 × 54.6 × 5 mm3; 2.18 cc). The frequency reconfigurable antenna based on this penta-band PIFA is thus proposed to additionally cover all LTE bands. The proposed antenna has two PIN diodes with an optimal location. For State 1 (PIN diode 1: ON state, PIN diode 2: OFF state), the proposed antenna covers the low frequency LTE band, DCS/PCS/WCDMA bands, and high frequency LTE band. For State 2 (PIN diode 1: OFF state, PIN diode 2: ON state), the antenna covers the GSM850/900 bands. Simulated and measured results show that the total efficiency of the proposed antenna was greater than 40% for all operating frequency bands.

scholarly journals Compact Antenna with Frequency Reconfigurability for GPS/LTE/WWAN Mobile Handset Applications

2016 ◽  
Vol 2016 ◽  
pp. 1-8
Author(s):  
Lingsheng Yang ◽  
Biyu Cheng ◽  
Yongan Zhu ◽  
Yajie Li
Keyword(s):  
Radiation Efficiency ◽  
Impedance Bandwidth ◽  
Reconfigurable Antenna ◽  
Antenna Gain ◽  
Radiation Patterns ◽  
Rf Switch ◽  
Compact Antenna ◽  
Resonant Modes ◽  
Mobile Handset ◽  
Frequency Reconfigurable Antenna

A compact frequency reconfigurable antenna for mobile handset application is proposed in this paper. The antenna consists of an inverted L-shaped feeding strip, a shorter grounded strip, and a longer grounded strip which is connected with four inductors by using a single-pole four-throw RF switch. When we change the working states of the RF switch, the corresponding inductor is connected with the long grounded strip and different resonant modes of the antenna can be realized. The measured −6 dB impedance bandwidth of the presented antenna is 683–960 MHz and 1460–2820 MHz, which is able to cover the LTE700/GSM850/900 and GPS/DCS1800/PCS1900/UMTS2100/LTE2300/2500 bands. The antenna gain, radiation efficiency, and radiation patterns are also described in the paper.

scholarly journals An Autonomous Frequency Reconfigurable Antenna Using Slotline Open-Loop Resonators

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Geriki Polaiah ◽  
Krishnamoorthy Kandasamy ◽  
Muralidhar Kulkarni
Keyword(s):  
Open Loop ◽  
Reconfigurable Antenna ◽  
Frequency Reconfigurable Antenna

scholarly journals Frequency Reconfigurable Antenna Based on Substrate Integrated Waveguide for S-Band and C-Band Applications

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 2839-2845
Author(s):  
Jiamei Qin ◽  
Xuedong Fu ◽  
Mingyu Sun ◽  
Qiang Ren ◽  
Aixin Chen
Keyword(s):  
Reconfigurable Antenna ◽  
Substrate Integrated Waveguide ◽  
Frequency Reconfigurable Antenna
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