Very low profile ultrawideband microstrip band‐stop filter

Ojaroudi, Nasser; Ojaroudi, Hamed; Ojaroudi, Yasser

doi:10.1002/mop.28185

Cited by 7 publications

(6 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The upper frequency bandwidth is significantly affected using them. It is observed that using these modified elements including L‐shaped slits and parasitic structures, additional third (9.5 GHz), and fourth (13.7 GHz) resonances are excited and hence the bandwidth is increased .…”

Section: Resultsmentioning

confidence: 99%

Omnidirectional microstrip monopole antenna design for use in microwave imaging systems

Ojaroudi

Ghadimi

2014

Micro & Optical Tech Letters

View full text Add to dashboard Cite

In this article, a new design of multiresonance monopole antenna for use in microwave imaging systems is presented. The antenna configuration consists of an ordinary square radiating patch, a feed‐line, and a modified ground plane with rotated E‐shaped slot and conductor‐backed plane structures which provides a wide usable fractional bandwidth of more than 135% (2.9–15 GHz). In the presented design, by cutting a rotated E‐shaped slot and also by embedding an E‐shaped parasitic structure in the ground plane, additional resonances at 10.6 and 14.2 GHz can be achieved. Using these structures, the usable upper frequency of the antenna is extended from 10.3 to 15 GHz. The proposed antenna has a symmetrical structure with ordinary square radiating patch, therefore, displays good omnidirectional radiation patterns even at higher frequencies. The antenna has sufficient and acceptable gain level and also its radiation efficiency is greater than 86% across the entire radiating band. The designed antenna has a small dimension. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:395–401, 2015

show abstract

Section: Resultsmentioning

confidence: 99%

Omnidirectional microstrip monopole antenna design for use in microwave imaging systems

Ojaroudi

Ghadimi

2014

Micro & Optical Tech Letters

View full text Add to dashboard Cite

show abstract

“…4. It is evident that the employed EBG is highly active in generating notches [29][30][31][32][33][34]. According to the current distribution at 5 and 8 GHz, it can be found that at the first notch, the currents are extremly active inside the EBG and at 8 GHz, the outer width of the EBG is surrounded by the surface current.…”

Section: Schematic Of the Proposed Bpf Designmentioning

confidence: 99%

A Design of UWB Band-Pass Filter with Variable Dual Notched Bands Using EBG Structure

Parchin¹

2020

Proceedings of the Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart

View full text Add to dashboard Cite

A new design of band-pass filter (BPF) with variable dual notched bands characteristic is introduced for ultra-wideband (UWB) applications. The configuration of the proposed BPF contains a rectangular-ring stub loaded with parallel-coupled lines and an inverted T-shaped electromagnetic band-gap (EBG) resonator is proposed in this letter. It is designed on a Rogers 5880 substrate with properties of ε= 2.2, δ= 0.0009, and h=1 mm. The proposed BPF exhibits a wide usable fractional bandwidth from 3.1 to 10.6 GHz and two-frequency notch-bands at 5 and 8 GHz. Due to the simple configuration and excellent characteristics of the presented design with tubule dual notch function, the proposed BPF is useful to be used in UWB communication networks.

show abstract

“…Recently, DGS resonator improvement such as asymmetric structure has attracted a lot of attentions in filter designing to achieve better performances [14], [22]. Moreover, the microstrip filters with several periodic units of photonic-band-gap (PBG) structure are proposed in [23]- [26]. Stated thus, periodic DGS resonators can be used in flexible microstrip filter design to achieve better performances, e.g., reducing size, sharping TB, widening SB.…”

Section: Introductionmentioning

confidence: 99%

A Flexible Microstrip Low-Pass Filter Design Using Asymmetric Pi-Shaped DGS

et al. 2019

View full text Add to dashboard Cite

This paper presents a flexible microstrip low-pass filter (LPF) fabricated on a polyimide film substrate. The proposed flexible microstrip LPF with ten cascaded asymmetrical Pi-shaped defected ground structure (DGS) resonators are designed, simulated, manufactured, and measured. The simulation and experiment results demonstrate that the designed flexible microstrip LPF has a very sharp transition band, an ultra-wide stop-band (SB) and high rejection in SB performance compared with the existed microstrip LPFs with symmetrical and asymmetrical DGS. The proposed flexible LPF with ten cascaded resonators is with a compact size of 100 mm × 2.6 mm × 0.254 mm, a very low insertion loss of less than 1.9 dB under 2.2 GHz, and a wide SB from 2.7 to 12 GHz with the rejection of larger than 50 dB. The proposed flexible LPF has the potential to be used in wireless terminals to replace the traditional RF coaxial cable because it is very thin and has good transmission and filtering functions.INDEX TERMS Defected ground structure (DGS), flexible printed circuit board (FPCB), low-pass filter (LPF), pi-shaped DGS, wireless communication.

show abstract

Very low profile ultrawideband microstrip band‐stop filter

Cited by 7 publications

References 5 publications

Omnidirectional microstrip monopole antenna design for use in microwave imaging systems

Omnidirectional microstrip monopole antenna design for use in microwave imaging systems

A Design of UWB Band-Pass Filter with Variable Dual Notched Bands Using EBG Structure

A Flexible Microstrip Low-Pass Filter Design Using Asymmetric Pi-Shaped DGS

Contact Info

Product

Resources

About