Ultra‐wideband tapered slot antenna with dual band‐notched characteristics

Abstract

A novel tapered slot antenna (TSA) with 3.5/5.5 GHz dual band‐notched characteristics for ultra‐wideband radios is proposed in this study. To realise dual band‐notched characteristics at the TSA, the author employ (a) a pair of nested C‐shaped stubs beside the feed line and (b) a broadband microstrip‐slotline transition with an Archimedean spiral‐shaped slot. The proposed antenna has been successfully simulated, implemented and measured. Measured data for the optimised case show the bandwidth for the voltage standing wave ratio < 2 to be 9.2 GHz (from 2.4 to 11.6 GHz) with two notched bands of 3.1–4.0 GHz (world interoperability for microwave access band) and 5.1–6.2 GHz (wireless local area network band), respectively. The measured electrical parameters of the proposed antenna and its radiation patterns show excellent performance with good pulse handling capabilities. Also, the 3.5/5.5 GHz dual band‐notched characteristics are achieved without increasing the size of the single band‐notched TSA reported previously.

Design of Dual Band-Notched CPW-Fed Uwb Planar Monopole Antenna Using Microstrip Resonators

“…Therefore the proposed antenna is convenient for transmitting and receiving UWB pulse with a very small distortion. Figure 6 shows a comparison between the simulated and measured normalized radiation pattern results of the proposed dual band-notched UWB antenna at selected frequencies (3,5,7.5,10.5 GHz) over the operating broadband. It is obvious that the radiation patterns in the E (yz-plane) and H (xz-plane) planes are stable over the whole operating frequency range and confirm the desired beams of an omnidirectional pattern of a monopole antenna.…”

A state-of-art review on band-notch characteristics in UWB antennas

“…Natani et al, placed square split ring resonators below the slot line of the coplanar TSA to excite the resonance of the SRR for procuring dual notch functioning. A novel design of tapered slot antenna (TSA) using a pair of nested C‐shaped stubs and a broadband microstrip‐slotline transition with an Archimedean spiral‐shaped slot has been realized by Lee et al…”

“…Thus, on analyzing the above literatures, it can be noted that, in most of the cases the alphabetical slots takes over the notch characteristics. Table represents a brief description of different alphabetical geometries used for notch functioning.…”

A Novel Reconfigurable Uwb Filtering-Antenna With Dual Sharp Band Notches Using Double Split Ring Resonators

“…Modified G-shaped slot defected in the ground plane and two Γ-shaped stubs located in the patch 2.8-11.8 5.55 900 3.55 500 [25] Two C-shaped stubs beside the feedline and spiral shaped slot defected in the feedline 2.4-11.6 5.65 1100 3.55 900 [26] An inverted Γ-shaped parasitic element placed inside the patch and a rectangular split ring resonator placed on the back side 3.1-13 5.4 600 7.5 600…”

“…Some others used defected ground structure (DGS) [23,24]. Another technique is using resonator structures beside the feedline of the antenna [25]. Incorporating active components into the resonant structure to achieve frequency reconfiguration was studied in [26][27][28].…”