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

Abstract

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.

Compact ultra‐wideband slot antenna with three notched‐band characteristics

“…Table presents the comparison of performance between the proposed antenna and other works reported recently in the literature by the References , , , , , , and . The comparison is based on the size, the bandwidth, and the number of bands rejected by the antennas.…”

“…The results of radiation efficiency demonstrate that the proposed antenna has an acceptable bandnotched characteristic. Table 5 presents the comparison of performance between the proposed antenna and other works reported recently in the literature by the References 4,5,10,11,15,22,[29][30][31][32]. The comparison is based on the size, the bandwidth, and the number of bands rejected by the antennas.…”

Dielectric loaded directive Vivaldi antenna considering dispersion in near and far field

“…Therefore, the received pulses for different cases in the time domain are obtained from Inverse Fast Fourier Transform (IFFT) of this frequency domain multiplication using Equation (4). 24 H…”

“…The −π/2 term comes from the reciprocity theorem as the transmitting and receiving antenna are identical,. 24 In order to investigate the time domain characteristics of EDS-VA, the normalized received pulses are calculated from IFFT of Equation ( 4). The maximum pulse spreading phenomena is observed in the case of EDS-VA when there is no V cut and W ext = 82 mm.…”

Compact UWB Antenna With Integrated Triple Notch Bands for WBAN Applications

“…In [21], a cpw fed UWB antenna integrated with stub loaded meander line resonator is proposed to achieve the triple notch bands. In [22] by applying stubs and slots in the radiating patch and parasitic stubs in the ground palne, three notch bands are obtained. Another approach is the insertion of resonator structures (such as split ring resonators) to create notch bands [23]- [25].…”