Design Elliptic Lowpass Filter with Inductively Compensated Parallel-Coupled Lines

Thammawongsa, N.; Phromloungsri, R.; Jamsai, Meechai; Pornsuwancharoen, N.

doi:10.1016/j.proeng.2012.01.1307

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…The ICPCLs are achieved by adding compensated inductors 𝐿 to a conventional PCL, as shown in Figure 1. In previous techniques [18,20,22,23], perfect isolation performance at the operating frequency (𝑓 ) can be achieved (𝑆 (𝑓 ) = 0), which results in an increasing directivity for the ICPCL. From [23], it finds that the equation for the compensated impedance (𝑍 ) is:…”

Section: The Icplmentioning

confidence: 99%

Design of a Compact Ultra-Wideband Bandpass Filter Using Inductively Compensated Parallel-Coupled Lines

2021

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An ultra-wideband bandpass filter (UWB-BPF) using inductively compensated parallel-coupled lines (ICPCL) is presented in this article. It consists of three circuits: a high-pass filter (HPF), a lowpass filter (LPF), and a transmission line. The HPF and the LPF are independently synthesized from the ICPCL. The proposed filter can suppress unwanted frequencies in the upper stopband and increase the skirt slope of the frequency response in the transition bands. The fabricated UWB-BPF with compact size provides good passband performances, with insertion loss of better than −0.49 dB and return loss of better than −12 dB in the frequency range of 2.92–10.95 GHz (the bandwidth of 8.03 GHz). The 107% bandwidth is achieved. In addition, the proposed filter can suppress the spurious frequencies at 2f0, which is greater than 30 dB. The measured results accord well with the simulation results. The novelty of the paper is the introduction of the ICPCL for the construction of the compact UWB-BPF.

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Section: The Icplmentioning

confidence: 99%

Design of a Compact Ultra-Wideband Bandpass Filter Using Inductively Compensated Parallel-Coupled Lines

2021

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“…Due to the advantages of wide stopband, sharp cutoff frequency, and easy fabrication, the microstrip hairpin has been drawing much attention. Its usage in the LPF in several works has been focused and demonstrated .To increase stopband, hairpin resonators can be cascaded . To achieve good performance, this article introduces symmetrical cascaded modified hairpin resonators with U‐shaped resonators.…”

Section: Introductionmentioning

confidence: 99%

Ultra-wide stopband low-pass filter using symmetrical cascaded modified hairpin resonators

Karimi

Hamedani

Siahkamari

2013

Int J RF and Microwave Comp Aid Eng

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An elliptical function low-pass filter (LPF) with ultra wide stopband and sharp cutoff frequency is proposed. This filter is composed of symmetrical cascaded modified hairpin resonators and U-shaped resonators. The transition band is from 1 to 1.21 GHz with 23 and 220 dB, respectively. For this filter, the return loss is better than 17 dB in 80% of passband width, where the insertion loss is less than 0.3 dB. The band-stop rejection is greater than 20 dB from 1.21 to 26.35 GHz and 40 dB from 1.35 to 12.5 GHz. To validate the design and analysis, the proposed LPF has been designed and fabricated on a 20 mil thick RO4003 substrate with a relative dielectric constant 3.38 and loss tangent of 0.0021. The filter is evaluated by experiment and simulation with a good agreement. V C 2013 Wiley Periodicals, Inc. Int J RF and Microwave CAE 24:314-321, 2014.

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The design of multiple feedback topology Chebyshev low-pass active filter with average differential evolution algorithm

Durmuş

Temurtaş

Özyön

2020

Neural Comput & Applic

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Design Elliptic Lowpass Filter with Inductively Compensated Parallel-Coupled Lines

Cited by 5 publications

References 3 publications

Design of a Compact Ultra-Wideband Bandpass Filter Using Inductively Compensated Parallel-Coupled Lines

Design of a Compact Ultra-Wideband Bandpass Filter Using Inductively Compensated Parallel-Coupled Lines

Ultra-wide stopband low-pass filter using symmetrical cascaded modified hairpin resonators

The design of multiple feedback topology Chebyshev low-pass active filter with average differential evolution algorithm

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