High-Selective Compact UWB Bandpass Filter With Dual Notch Bands

Sarkar, Pankaj; Ghatak, Rowdra; Pal, Madhumangal; Поддар, Д. Р.

doi:10.1109/lmwc.2014.2316214

Cited by 25 publications

(17 citation statements)

References 10 publications

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“…In order to solve the problems mentioned above, many different methods have been proposed by the researchers. One of the most common methods is to integrate some notch structures into the filters, which has lots of theoretical supports, mature approach, and easy implementation. Moreover, the notch filter is also integrated into antennas to suppress the transmission power of the stopband frequency.…”

Section: Introductionmentioning

confidence: 99%

An ultra‐wideband power amplifier with band notched response

Chen

Shi

2020

Micro & Optical Tech Letters

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An ultra‐wideband (UWB) power amplifier (PA) integrated with notched structure is proposed in this letter. During the design process of the amplifier, a codesign approach was adopted, which realized an UWB band‐pass filter as the matching network, and a transmission zero was introduced within the passband to eliminate an interference to other radio systems. An example of band notch centered at 2.4 GHz was demonstrated in the PA. The measured results of the UWB amplifier are shown that 50% to 68% drain efficiency, 39.6 to 42.6 dBm output power, and higher than 10 dB power gain at the frequency range of 0.8 to 2.15 and 2.5 to 3 GHz are achieved. In addition, there is an obvious stopband of 2.2 to 2.4 GHz, and the minimum gain and output power in the stop band are 0.22 dB and 23 dBm, respectively.

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Section: Introductionmentioning

confidence: 99%

An ultra‐wideband power amplifier with band notched response

Chen

Shi

2020

Micro & Optical Tech Letters

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“…Most UWB bandpass filters (BPFs) are designed with dielectric materials on circuit boards or with LTCC technology. In the past decade, several bandpass filters are proposed for the UWB system [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. The proposed filters have good performance of low loss, good matching, and high selectivity over the 3.1-10.6 GHz UWB frequency band.…”

Section: Introductionmentioning

confidence: 99%

A Compact UWB Bandpass Chip Filter on a GaAs Substrate with Modified Chebyshev Structure

Gao

et al. 2020

Electronics

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Ultra-Wideband (UWB) systems are widely used in low-power, high-speed, high-security short-range wireless communication systems throughout digital homes and offices. In the RF front-end of a UWB system, bandpass filters (BPFs) are used to put through the passband signals and reject the stopband signals. Most UWB BPFs are designed with dielectric materials on circuit boards or LTCC technology. In this paper, a very compact fully integrated UWB chip filter is proposed and designed on a GaAs substrate with nitride as dielectric layers to meet the small size requirement of portable devices for next-generation UWB applications. The filter is constructed with a modified Chebyshev structure. The final filter circuit contains only four inductors instead of six for the conventional Chebyshev filter, which makes the chip more compact and cost effective. The filter is designed and fabricated on a 0.25 μm GaAs pHEMT technology with a chip size of only 0.73 mm × 0.51 mm including the chip edge and scribe line area, while the filter core area is only 0.61 mm × 0.39 mm, including bonding PADs. The measurement results illustrated that the proposed BPF shows a passband covering the frequency range of 3.1–9.0 GHz, the minimum passband insertion loss is only 1.5 dB, the stopband rejection is better than −30 dB throughout frequencies below 2 GHz and above 12 GHz, S11 is less than −16 dB, and S22 is better than −11 dB during the whole passband range. It demonstrated that the proposed filter can be considered as one of the most compact UWB filters.

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“…Over the years several methods have been introduced to create these filters for UWB systems in different ways using resonators, defective ground surface (DGS), metamaterials, shorted circuits, transmission lines, slots, and so forth. [1][2][3][4][5][6][7][8] When working with the UWB filters the main consideration is to have good selectivity over the range 3.1-10.6 GHz as per the FCC. Having the good selectivity in both low and high frequency, multimode resonator-based designs were introduced for creating the UWB bandpass filter with high selectivity.…”

Section: Introductionmentioning

confidence: 99%

A compact ultra wide band bandpass filter with dual band notch designed based on composite right/left‐handed transmission line unit cell

Janapala

Nesasudha

2018

Int J RF Microw Comput Aided Eng

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In this article, we propose an ultra wide band (UWB) bandpass filter with dual notch characteristics. The proposed filter is designed based on composite right/left handed (CRLH) transmission lines. The filter is having a compact size of 2.4 mm × 8.78 mm and printed on FR4 material with relative permittivity 4.4 with thickness 1.6 mm. The filter is constructed by series of strip lines, which forms interdigital capacitance and shunt inductors allowing both low and high frequencies of the UWB to pass. The selectivity in lower and higher parts of the UWB is achieved by the slots etched from the ground plane. The dual band notch is obtained at 4 GHz and 7 GHz using the L‐shaped strip lines on both sides of the filter. The comparative analysis of the proposed UWB band pass filter without and with notch characteristics is presented with the help of the S11 and S21 curves.

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High-Selective Compact UWB Bandpass Filter With Dual Notch Bands

Cited by 25 publications

References 10 publications

An ultra‐wideband power amplifier with band notched response

An ultra‐wideband power amplifier with band notched response

A Compact UWB Bandpass Chip Filter on a GaAs Substrate with Modified Chebyshev Structure

A compact ultra wide band bandpass filter with dual band notch designed based on composite right/left‐handed transmission line unit cell

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