Two Decades of UWB Filter Technology: Advances and Emerging Challenges in the Design of UWB Bandpass Filters

Shome, Partha Pratim; Khan, Taimoor; Koul, Shiban K.; Antar, Yahia M. M.

doi:10.1109/mmm.2021.3078040

Cited by 14 publications

(8 citation statements)

References 101 publications

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“…The proposed UWB filter has a super wideband starting from 2.7 GHz to 12.1 GHz with the 3-dB FBW 127%, central frequency (CF) 7.4 GHz, and 0.1 dB IL over the entire band as depicted in Fig 13 . This bandwidth covers the basic requirements of the UWB range authorized by FCC in 2002 having fractional bandwidth not less than 109% [ 1 ]. To supress the unwanted signal in the UWB range i.e., WLAN, Wi-Fi 6E, and X-band satellite communication system, a triple mode SIR is embedded in the UWB filter to introduce the stopbands at 5.1 GHz, 6 GHz, and 8 GHz, with rejection level greater than -15 dB and insertion loss lower than -1.3 dB for all the three stopbands and is tabulated in Table 3 .…”

Section: Theoretical and Experimental Resultsmentioning

confidence: 99%

“…In today’s world of wireless communication systems, the design of microwave filter has become critical due to increasing demand of advanced communication systems [ 1 , 2 ]. A review of recent research literature shows that the field of UWB applications have attracted great interest of RF/microwave and academic researchers since the Federal Communications Commission (FCC) licensed frequency band 3.1 GHz to 10.6 GHz for commercial purposes due to its ultra-high-speed data transmission (> 500 Mbit/s), low power dissipation, high selectivity, low insertion loss (IL), and smooth group delay to diminish attenuation in ultra-wideband signal and make it suitable for short distance communication applications [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

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Miniaturized ultra-wideband filter with independently controlled notch bands for 5.1/6/8 GHz wireless applications

et al. 2022

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A novel three-mode step impedance resonator (TSIR) is developed to design a miniaturized multi-pole microstrip planar ultra-wideband (UWB) filter with independently controlled notched bands at different frequencies is presented in this work. The basic UWB filter consists of four L-shaped λ/4 short-circuited stubs operating in the range of i.e. 2.7 to 12.1 GHz with fractional bandwidth (FBW) 127%, and the TSIR is constructed using two T-shaped λ/2 open ended step impedance resonator (SIR) and one λ/4 short-circuited uniform impedance resonator (UIR) is coupled to the basic UWB design in order to achieve the stopbands performance at 5.1 GHz, 6 GHz, and 8 GHz, to supress the unwanted bands of WLAN, Wi-Fi 6E, and X-band satellite communication system, respectively. Commercial full-wave electromagnetic (EM) software HFSS-13 was used to design an ultra-compact structure having size 0.07 λg×0.02 λg on Rogers RT/Duroid 5880 substrate to justify good agreement between simulated and measured S-parameters.

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Section: Theoretical and Experimental Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Miniaturized ultra-wideband filter with independently controlled notch bands for 5.1/6/8 GHz wireless applications

et al. 2022

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“…However, the MIMU orientation method is less accurate because it is more subject to ambient interference and mistakes brought on by attitude and position solving from pure inertial guiding data. Where conventional GPS [ 9 ] cannot be used in underground mine environments [ 10 ], UWB [ 11 , 12 ] positioning systems can be used in environments where GPS is denied. SINS has been successfully applied to the positioning of continuous coal mining machines [ 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Research on IMU-Assisted UWB-Based Positioning Algorithm in Underground Coal Mines

Wang

Zhang

et al. 2023

Micromachines

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The application of an ultra-wideband (UWB) positioning system in a Global Positioning System (GPS) denial environment such as an underground coal mine, mainly focuses on position information and rarely involves information such as direction attitude. Position accuracy is often affected by multipath, non-visible ranges, base station layout, and more. We proposed an IMU-assisted UWB-based positioning system for the provision of positioning and orientation services to coal miners in underground mines. The Error-State Kalman Filter (ESKF) is used to filter the errors in the measured data from the IMU-assisted UWB positioning system to obtain the best estimate of the error for the current situation and correct for inaccuracies due to approximations. The base station layout of the IMU-assisted UWB positioning system was also simulated. The reasonable setting of the reference base station location can suppress multi-access interference and improve positioning accuracy to a certain extent. Numerous simulation experiments have been conducted in GPS denial environments, such as underground coal mines. The experimental results show the effectiveness of the method for determining the position, direction, and attitude of the coal miner under the mine, which provides a better reference value for positioning and orientation in a GPS rejection environment such as under the mine.

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“…It is therefore critically important for the researchers and the systems designers to reject or filter these interfering bands, which leads to the concept of filtering, and notch-band characteristics [18]. A number of researchers have proposed and investigated different UWB filter designs with band-rejection capabilities and selectivity at different frequency bands to solve this problem [27]. On the other hand, antennas with band-rejection characteristics can also be designed using different techniques to select certain frequency bands and reject others.…”

Section: Introductionmentioning

confidence: 99%

A Compact Triple-Band UWB Inverted Triangular Antenna with Dual-Notch Band Characteristics Using SSRR Metamaterial Structure for Use in Next-Generation Wireless Systems

et al. 2022

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A compact triple-band operation ultra-wideband (UWB) antenna with dual-notch band characteristics is presented in this paper. By inserting three metamaterial (MTM) square split-ring resonators (MTM-SSRRs) and a triangular slot on the radiating patch, the antenna develops measured dual-band rejection at 4.17–5.33 GHz and 6.5–8.9 GHz in the UWB frequency range (3–12 GHz). The proposed antenna offers three frequency bands of operation in the UWB range, which are between 3–4.17 GHz (~1.2 GHz bandwidth), 5.33–6.5 GHz (~1.17 GHz bandwidth), and 8.9–12 GHz (~3.1 GHz bandwidth), respectively. The higher resonating frequency band can be tuned/controlled by varying the width of the triangle slot, while the medium operational band can be controlled by adjusting the width of the SSRR slot. Initially, the simulated S-parameter response, 2D and 3D radiation patterns, gain, and surface current distribution of the proposed UWB inverted triangular antenna has been studied using epoxy glass FR4 substrate having parameters εr = 4.3, h = 1.6 mm, and tan δ = 0.025, respectively. In order to validate the simulation results, the proposed UWB antenna with dual-notch band characteristics is finally fabricated and measured. The fabricated antenna’s return-loss and far-field measurements show good agreement with the simulated results. The proposed antenna achieved the measured gain of 2.3 dBi, 4.9 dBi, and 5.2 dBi at 3.5 GHz, 6.1 GHz, and 9.25 GHz, respectively. Additionally, an in-depth comparative study is performed to analyze the performance of the proposed antenna with existing designs available in the literature. The results show that the proposed antenna is an excellent candidate for fifth-generation (5G) mobile base-stations, next-generation WiFi-6E indoor distributed antenna systems (IDAS), as well as C-band and X-band applications.

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Two Decades of UWB Filter Technology: Advances and Emerging Challenges in the Design of UWB Bandpass Filters

Cited by 14 publications

References 101 publications

Miniaturized ultra-wideband filter with independently controlled notch bands for 5.1/6/8 GHz wireless applications

Miniaturized ultra-wideband filter with independently controlled notch bands for 5.1/6/8 GHz wireless applications

Research on IMU-Assisted UWB-Based Positioning Algorithm in Underground Coal Mines

A Compact Triple-Band UWB Inverted Triangular Antenna with Dual-Notch Band Characteristics Using SSRR Metamaterial Structure for Use in Next-Generation Wireless Systems

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