Compact Microstrip Uwb Bandpass Filter With Two Band-Notches for Uwb Applications

Peng, Huaxia; Luo, Yufeng; Zhao, Junding

doi:10.2528/pierl14011504

Cited by 9 publications

(4 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, a comparison of characteristics between the proposed filter and some other filters is presented in Table 5 , in which insertion loss and return loss are over the whole pass-bands, while f L and f H means the central frequency of lower and higher frequency notched bands. It can be seen that the proposed filter has dual notched bands at 3.5 and 7.5 GHz with the rejection level of 25.2 dB and 17.3 dB and an FBW 123.9% higher than the other 10 works [ 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. The measured results illustrate that the dual notched bands are centered at 3.5 and 7.5 GHz with an FBW of 15.91% and 9.63%.…”

Section: Resultsmentioning

confidence: 85%

UWB Bandpass Filter with Dual Notched Bands Using T-Shaped Resonator and L-Shaped Defected Microstrip Structure

Zheng

Pan²,

Jiang

2018

Micromachines

View full text Add to dashboard Cite

In this paper, an ultra-wideband (UWB) bandpass filter (BPF) with dual notched bands using a T-shaped resonator and L-shaped defected microstrip structure (DMS) is proposed and fabricated. First, the principle of generating notched bands by using a T-shaped resonator and L-shaped defected microstrip structure to determine the size parameters of the structure is analyzed. High frequency structure simulator (HFSS) software is used to analyze the performance of the filter, and advanced design system (ADS) is used to extract the equivalent circuit model parameters. The two simulation results are consistent, which further verifies the correctness of the circuit model. Finally, the filter is fabricated and measured. The measured results are in good agreement with simulated results, demonstrating good insertion loss and return loss. The proposed filter has dual independently controllable notched bands which are implemented by coupling the T-shaped resonator to the transmission line and by etching the L-shaped defected microstrip structure respectively. The proposed filter can suppress dispensable bands at 3.5 GHz and 7.5 GHz in WiMAX band and X-band to improve the performance of the ultra-wideband communication system. By adjusting the parameters of the T-shaped resonator and L-shaped defected microstrip structure, the UWB bandpass filter with dual notched bands working at WiMAX band and X-band can be designed and applied to the wireless communication system.

show abstract

Section: Resultsmentioning

confidence: 85%

UWB Bandpass Filter with Dual Notched Bands Using T-Shaped Resonator and L-Shaped Defected Microstrip Structure

Zheng

Pan²,

Jiang

2018

Micromachines

View full text Add to dashboard Cite

show abstract

“…On the other hand, to avoid unexpected signal interference between the UWB system and other wireless systems (e.g., WLAN etc. ), a notched band of UWB BPF is required within the defined UWB frequency spectrum is studied in [7][8][9][10]. In [7], a notched band is simply created by embedding an asymmetric shunt stub in the feed line, and the notched band can be changeable by adjusting the size of the stub.…”

Section: Introductionmentioning

confidence: 99%

“…Multi-narrow notched bands can be introduced by integrating slot-lines on the bottom side of the coplanar waveguide (CPW) BPF is shown in [8], and its notched band can be controlled by changing the length of the slot-lines. In [9,10], a dual-notch band is formed by embedding two open circuited stubs in the form of defected microstrip structure in [9], and a dual-mode resonator is utilized to generate a dual notch band in [10].…”

Section: Introductionmentioning

confidence: 99%

Uwb Bandpass Filter With Hybrid Structure and Two Transmission Zeros in the Notched Band

Zheng¹,

Wang²,

Wong³

et al. 2014

PIER Letters

View full text Add to dashboard Cite

Abstract-An ultra-wideband (UWB) bandpass filter (BPF) with hybrid coplanar waveguide (CPW)/microstrip structure is introduced in this paper. Then a pair of lowpass filters is integrated on the CPW feed lines to achieve a good out-of-band rejection. At last, a notched band with two transmission zeros is realized at 5.8 GHz by using a symmetric E-shaped slot-line and etching slots on microstrip resonator. Two transmission zeros are realized in the desired notched band, and out-of band rejection is more than 32 dB. In order to prove the validity, the proposed filter is fabricated and measured, and the measured results are in good agreement with simulated ones.

show abstract

“…Thus, an arbitrary two-port circuit can be represented by a chromosome. Table 1 shows the details of the basic circuit elements [17][18][19]. A special gene named Empty is introduced, which enables the representation scheme to describe a circuit with an arbitrary number of basic circuit elements and orders.…”

Section: Genetic Algorithmmentioning

confidence: 99%

A Novel Approach to Design of Microstrip Uwb Bandpass Filter Using Modified Genetic Algorithm

Peng¹,

Zhao²,

Zhang³

et al. 2014

PIER M

Self Cite

View full text Add to dashboard Cite

Abstract-A novel approach to design microstrip ultra-wideband (UWB) bandpass filter (BPF) using modified genetic algorithm (MGA) is proposed in this paper. To achieve high efficiency and accuracy, conventional GA is modified. By improving the fitness evaluation, selection, crossover, and mutation, the two possible drawbacks of conventional GA, i.e., slow rate of convergence and local-best solution, are overcome. The modified genetic algorithm is then applied to simultaneously search for the appropriate circuit topology and the corresponding electrical parameters with UWB characteristic. To demonstrate the effectiveness of the novel approach, a new microstrip UWB BPF is designed and fabricated. Measurement results agree well with the design index and full-wave EM simulated results.

show abstract

Compact Microstrip Uwb Bandpass Filter With Two Band-Notches for Uwb Applications

Cited by 9 publications

References 23 publications

UWB Bandpass Filter with Dual Notched Bands Using T-Shaped Resonator and L-Shaped Defected Microstrip Structure

UWB Bandpass Filter with Dual Notched Bands Using T-Shaped Resonator and L-Shaped Defected Microstrip Structure

Uwb Bandpass Filter With Hybrid Structure and Two Transmission Zeros in the Notched Band

A Novel Approach to Design of Microstrip Uwb Bandpass Filter Using Modified Genetic Algorithm

Contact Info

Product

Resources

About