A New Differentially-Fed Frequency Reconfigurable Antenna for WLAN and Sub-6GHz 5G Applications

Jin, Guangyong; Deng, Chuhong; Yang, Jing; Xu, Yechun; Liao, Shaowei

doi:10.1109/access.2019.2901760

Cited by 94 publications

(65 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The integration of the applied techniques in portable devices is significantly complex. Similarly, in [23], a differentially fed antenna with frequency-reconfigurable characteristics was developed for WLAN and sub-6-GHz 5G applications. The large size (100 mm × 100mm × 2.5 mm), two-layered structure, and the number of switches made the design inappropriate for smart handheld devices.…”

Section: Introductionmentioning

confidence: 99%

Integration of Sub-6-GHz and mm-Wave Bands With a Large Frequency Ratio for Future 5G MIMO Applications

2021

View full text Add to dashboard Cite

The integration of sub-6-GHz and millimeter-wave (mm-wave) bands has become an important issue for future fifth generation (5G) wireless communications owing to their large frequency ratios. This paper proposes a compact-size dual-function antenna operating at 3.5 GHz and the mm-wave band (28 GHz) for 5G mobile applications using a frequency reconfigurability technique. The proposed antenna comprises a microstrip patch linked with a meandered radiating structure through a radio frequency PIN diode to achieve frequency reconfigurability between the two bands. A significant size reduction up to 15.3 mm × 7.2 mm × 0.508 mm for the proposed antenna was achieved using a meandered line structure and truncated ground plane. To enhance the functionality, 8 × 8 multiple-input multiple-output (MIMO) with possible long-and short-edge antenna placement configurations were demonstrated. The system exhibited satisfactory MIMO characteristics with wide decoupling −10 dB bandwidths of 7.4% and 4.8% at the low-and high-frequency bands, respectively, without utilizing any external decoupling structure. The simulated results were validated using fabricated prototypes, and good agreement was observed. Additionally, a safety analysis based on the specific absorption rate and power density at the prescribed frequency bands was conducted using a realistic human model, and the results were found to be in accordance with the safety guidelines. Owing to the integration of sub-6-GHz and mm-wave bands in a single compact structure with a large frequency ratio and good MIMO performance, the proposed antenna system is suitable for future 5G mobile handheld devices.

show abstract

Section: Introductionmentioning

confidence: 99%

Integration of Sub-6-GHz and mm-Wave Bands With a Large Frequency Ratio for Future 5G MIMO Applications

2021

View full text Add to dashboard Cite

show abstract

“…A CPW Fed Sub 6 GHz Frequency Reconfigurable Antenna for 5G and UWB Applications is presented in [ 15 ] where a single pin diode is used for reconfigurability. In [ 16 ] a Differentially-Fed Frequency Reconfigurable antenna is presented for WLAN and Sub-6GHz 5G Applications. These antennas can operate in either single or dual band modes depending on the state of switch.…”

Section: Introductionmentioning

confidence: 99%

Design and Experimental Analysis of Multiband Frequency Reconfigurable Antenna for 5G and Sub-6 GHz Wireless Communication

Dildar¹,

Althobiani

Ahmad³

et al. 2020

Micromachines

View full text Add to dashboard Cite

A low-profile frequency reconfigurable monopole antenna operating in the microwave frequency band is presented in this paper. The proposed structure is printed on Flame Retardant-4 (FR-4) substrate having relative permittivity of 4.3 and tangent loss of 0.025. Four pin diode switches are inserted between radiating patches for switching the various operating modes of an antenna. The proposed antenna operates in five modes, covering nine different bands by operating at single bands of 5 and 3.5 GHz in Mode 1 and Mode 2, dual bands (i.e., 2.6 and 6.5 GHz, 2.1 and 5.6 GHz) in Mode 3 and 4 and triple bands in Mode 5 (i.e., 1.8, 4.8, and 6.4 GHz). The Voltage Standing Waves Ratio (VSWR) of the presented antenna is less than 1.5 for all the operating bands. The efficiency of the designed antenna is 84 % and gain ranges from 1.2 to 3.6 dBi, respectively, at corresponding resonant frequencies. The achieve bandwidths at respective frequencies ranges from 10.5 to 28%. The proposed structure is modeled in Computer Simulation Technology microwave studio (CST MWS) and the simulated results are experimentally validated. Due to its reasonably small size and support for multiple wireless standards, the proposed antenna can be used in modern handheld fifth generation (5G) devices as well as Internet of Things (IoT) enabled systems in smart cities.

show abstract

“…In particular, the integrated transmitter requires wideband matching networks for multiband transmission, which significantly deteriorates the device form factor. Traditionally, a reconfigurable antenna can support more than one frequency band (noncontiguous) via p-i-ndiodes [1]- [6] or varactor diodes [7]- [10], though linearity, power handling capability, and complex dc biasing are issues. Similarly, RF-MEMS devices can tune antenna frequency response even though the packaging and reliability still remain a design Fig.…”

Section: Introductionmentioning

confidence: 99%

A 1.5–5-GHz Integrated RF Transmitter Front End for Active Matching of an Antenna Cluster

Saleem

Stadius

Hannula

et al. 2020

IEEE Trans. Microwave Theory Techn.

View full text Add to dashboard Cite

A recently proposed method for realizing frequencyreconfigurable antennas across a wideband is based on adjusting the feed amplitudes and phases of a multiport antenna. In this article, we demonstrate the feasibility of the method, for the first time, with a conjunction of an integrated RF transmitter and a four-element antenna cluster. The implementation performs on-chip amplitude and phase tuning with supply scaling and delay tuning circuits to tune the antenna cluster without requirement of matching network. The antenna cluster is built with four closely spaced antenna elements implemented on a printed circuit board. The transmitter integrated circuit (IC) is implemented in a 28-nm CMOS process with the chip size of 0.85 mm × 0.95 mm, including pads. The proof-of-concept implementation demonstrates tunability across a wideband from 1.5 to 5 GHz.

show abstract

A New Differentially-Fed Frequency Reconfigurable Antenna for WLAN and Sub-6GHz 5G Applications

Cited by 94 publications

References 29 publications

Integration of Sub-6-GHz and mm-Wave Bands With a Large Frequency Ratio for Future 5G MIMO Applications

Integration of Sub-6-GHz and mm-Wave Bands With a Large Frequency Ratio for Future 5G MIMO Applications

Design and Experimental Analysis of Multiband Frequency Reconfigurable Antenna for 5G and Sub-6 GHz Wireless Communication

A 1.5–5-GHz Integrated RF Transmitter Front End for Active Matching of an Antenna Cluster

Contact Info

Product

Resources

About