Investigation of a reconfigurable dual notched UWB antenna by conceptual circuit model and time-domain characteristics

Gao, Guoping; Hu, Bin; He, Lele; Wang, Shaofei; Yang, Chen

doi:10.1002/mop.30535

Cited by 31 publications

(21 citation statements)

References 16 publications

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“…Figure 17 demonstrates the channel impulse responses at the center point of the spatial grid at the different sub-bands. For a better view and comparison, channel impulse responses of 5 sub-bands are shown in the figure (subband 1,5,8,10,13). In this case, the distance between the transmitter and receiver is 2.8 m. It is seen that the channel impulse responses (CIR) are completely different at the various sub-bands.…”

Section: Characteristicsmentioning

confidence: 99%

Study on frequency and time domain properties of novel triple band notched UWB antenna in indoor propagation channel

Emadian

Ahmadi‐Shokouh

2018

Int J RF Microw Comput Aided Eng

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Frequency and time domain characteristics of a novel and compact triple band notched ultra wideband (UWB) monopole antenna are investigated. To realize UWB characteristics, the lower edges of a simple rectangular radiating patch are truncated and a new structure including a semi‐circle like ring stub is added to the rear side of the antenna. To avoid interferences with coexisting narrow band systems such as WiMAX, WLAN, and X band, two inverse L‐shaped slots, a semi‐circle like ring slot and two C‐shaped resonators are incorporated in the antenna geometry, respectively. The effect of the proposed antenna on a modulated Gaussian pulse as an excitation signal in different scenarios is fully studied. Moreover, the channel impulse response of a simple indoor environment is investigated when a pair of the proposed antennas are applied as transmitting and receiving antennas. Sub‐band divided ray tracing method based on the geometrical optics and uniform theory of diffraction is used to simulate the impulse response of the propagation channel. A frequency domain measurement campaign is also employed to measure the channel characteristics. The measured results are compared with those obtained from the simulations to validate the design procedure.

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Section: Characteristicsmentioning

confidence: 99%

Study on frequency and time domain properties of novel triple band notched UWB antenna in indoor propagation channel

Emadian

Ahmadi‐Shokouh

2018

Int J RF Microw Comput Aided Eng

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“…Also, in [5] they removed all interfering frequency bands within the UWB spectrum and achieved Penta-notched behavior. Researchers also tried to achieve continuously tunable behavior [6], switchable behavior between narrow-band and wide-band [7], and reconfigurable notch band behavior [8,9]. All these techniques are limited up to two different behaviors from a single resonator.…”

Section: Introductionmentioning

confidence: 99%

Resonator Based Switching Technique between Ultra Wide Band (UWB) and Single/Dual Continuously Tunable-Notch Behaviors in UWB Radar for Wireless Vital Signs Monitoring

Rahman

Naghshvarianjahromi

Mirjavadi

2018

Sensors

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This paper presents a novel resonator that can switch and create three important behaviors within the same antenna using miniaturized capacitors. The resonator was integrated into conventional Ultra-Wide Band (UWB) antenna to achieve UWB and Single/Dual continuously tunable-notch behaviors. The Single/Dual notched was continuously tuned to our desired frequency band by changing the value of the capacitors. The antenna designed and fabricated to validate these behaviors had a compact size of 24 × 30.5 mm2, including the ground plane. The radiation patterns were very clean due to the placement of the proposed resonator in the special ground plane. Moreover, the presented novel resonator and switching technique was compared with the recently proposed resonators and their switching techniques. The prototype for the antenna was also developed in order to validate its performance in wireless vital signs monitoring. The presented miniaturized resonator based antenna was utilized for tumor sensing and simulations were provided in this regard. Moreover, the deployment of the proposed resonator based UWB antenna sensor in Pipeline Integrity Monitoring system was also investigated and discussed.

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“…Thus, the reconfigurable technique has received significant attention in the field of wireless communications. A number of reconfigurable notched-band UWB antennas have been discussed, the notched-band frequency can be continuously tuned with the aid of varactor diode or/and discretely switched by using PIN diode [22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

“…Tunability or frequency-agility of such rejected bands can pave the way towards mitigating this limitation. Findings in [22][23][24][25][26][27][28][29] have reported several UWB antennas with single or dual tunable-notched bands using varactor and PIN technologies. However, these antennas still do not have a filtering feature around the higher-band UWB spectrum (6 GHz to 11 GHz).To address all the above-mentioned limitations, this article presents a compact printed monopole UWB antenna with dual tunable rejected band technology: the initial notched band can be tuned from 3.2 GHz to 5.1 GHz, whilst the second one is designed to be tuned from 7.25 GHz to 9.9 GHz.…”

Section: Introductionmentioning

confidence: 99%

Slotted Printed Monopole UWB Antennas with Tunable Rejection Bands for WLAN/WiMAX and X-Band Coexistence

Elfergani¹,

Rodrı́guez²,

Otung³

et al. 2018

RADIOENGINEERING

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Four versions of the compact hexagonal-shaped monopole printed antennas for UWB applications are presented. The first proposed antenna has an impedance bandwidth of 127.48% (3.1 GHz to 14 GHz), which satisfies the bandwidth for ultra-wideband communication systems. To reduce the foreseen co-channel interference with WLAN (5.2 GHz) and X-Band systems (10 GHz), the second and third antennas type were generated by embedding hexagonal slot on the top of the radiating patch. The integration of the half and full hexagonal slots created notched bands that potentially filtered out the sources of interference, but were static in nature. Therefore, a fourth antenna type with tunable-notched bands was designed by adding a varactor diode at an appropriate location within the slot. The fourth antenna type is a dual-notch that was electronically and simultaneously tuned from 3.2 GHz to 5.1 GHz and from 7.25 GHz up to 9.9 GHz by varying the bias voltages across the varactor. The prototypes of the four antenna versions were successfully fabricated and tested. The measured results have good agreement with the simulated results.

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Investigation of a reconfigurable dual notched UWB antenna by conceptual circuit model and time-domain characteristics

Cited by 31 publications

References 16 publications

Study on frequency and time domain properties of novel triple band notched UWB antenna in indoor propagation channel

Study on frequency and time domain properties of novel triple band notched UWB antenna in indoor propagation channel

Resonator Based Switching Technique between Ultra Wide Band (UWB) and Single/Dual Continuously Tunable-Notch Behaviors in UWB Radar for Wireless Vital Signs Monitoring

Slotted Printed Monopole UWB Antennas with Tunable Rejection Bands for WLAN/WiMAX and X-Band Coexistence

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