A Bandwidth Reconfigurable Bandpass Filter for Ultrawideband and Wideband Applications

Bandyopadhyay, Anjan; Sarkar, Pankaj; Ghatak, Rowdra

doi:10.1109/tcsii.2022.3167028

Cited by 20 publications

(9 citation statements)

References 22 publications

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“…The reconfigurable technology in the bandpass filter is one of the key research contents. [13][14][15][16][17] Reconfigurable technology using electronic components (such as p-i-n diode) is widely used in filter structures. [1][2][3] The electronic reconfigurable type has the advantages of fast speed and small volume.…”

Section: Introductionmentioning

confidence: 99%

“…There are many different technologies to implement bandpass filter, such as microstrip, 1–3 stripline, 4 substrate integrated waveguides (SIW), 5–7 metal rectangular waveguide, 8,9 substrate‐integrated‐suspended‐line (SISL), 10–12 and so on. The reconfigurable technology in the bandpass filter is one of the key research contents 13–17 …”

Section: Introductionmentioning

confidence: 99%

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Novel FR4‐based low loss reconfigurable filter with four operating modes using movable transmission lines

Wang,

Jiang,

Wang

2024

Micro & Optical Tech Letters

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In the letter, a novel reconfigurable filter using movable transmission lines is proposed. The filter is based on substrate‐integrated‐suspended‐line structure with two inner layers, fabricated on low‐cost FR4 substrate. The suspension line and the cavity are completely covered by copper. The suspension line could be freely moved in the air cavity. In the novel structure, the coupled lines have a variable coupling coefficient. With the movements of two transmission lines, the filter has four operating modes and can be tuned, with low insertion loss of less than 0.45 dB, showing promising properties.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel FR4‐based low loss reconfigurable filter with four operating modes using movable transmission lines

Wang,

Jiang,

Wang

2024

Micro & Optical Tech Letters

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“…R ecently, ultra-wideband (UWB) technology has become increasingly popular due to its high-speed data transfer, high channel capacity, and reliable communications for markets like telecommunications, aerospace, and defense [1]. UWB bandpass filters were designed to remove noise and unwanted signals in UWB applications, and UWB spectrum is prone to interfere with WLAN, WIFI, RFID, etc.…”

Section: Introductionmentioning

confidence: 99%

Compact Single Notch UWB Bandpass Filter with Metamaterial and SIW Technique

Udhayanan,

Shambavi

2024

PIER Letters

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A design of a compact planar SIW filter with notch band characteristics is proposed. Double split square complementary split ring resonators are used to realize the ultra-wideband (UWB) characteristics. Proposed UWB filter contributes a passband from 2.9 GHz to 10.3 GHz with minimum insertion loss 0.7 dB at 3.7 GHz and maximum of 1.84 dB at 7 GHz. By employing a complementary split ring resonator in the ground plane, a narrow band characteristic is obtained to reject the undesired wireless local area network (WLAN) signals. The notch band frequency ranges from 5 GHz to 5.7 GHz with insertion loss of 14 dB at center frequency. The 3 dB fractional bandwidth in the notch band is 12.9%. The variation of group delay is less than 0.5 ns in the passband range. Overall size of the proposed filter is 0.35λg × 1.06λg. Because of these salient features, the proposed filter can be used for space applications.

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“…A switchable filter was constructed by a set of microstrip lines. The switch between the ultra-wideband and wideband was determined by the connection of high impedance quarterwavelength shorted stubs or a shorted stepped impedance resonator [5]. A reconfigurable dual-band bandpass filter was designed, which can alter three bandwidths through the control of PIN diodes without changing the center frequency [6].…”

Section: Introductionmentioning

confidence: 99%

A Compact Bandpass Filter with Active Switchable Passband Status

Xu,

Tang,

Wang

et al. 2024

ACES Journal

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In order to meet the increasing demand for adjustable devices in the modern wireless communication system, a compact bandpass filter with active switchable passband is proposed. The filter is based on the half mode substrate integrated waveguide (HMSIW), and uses its cut-off characteristics to form the lower stopband. The resonant characteristics of a quarter-wavelength shorted stub generates a transmission zero (TZ) at higher frequency, which forms the upper stopband. The active control of DC power supply determines the biased states of PIN diodes to change the electrical size of the filtering parts. When the diodes are reverse biased, the filter works in C band with the passband of 3.9-5.2 GHz; when the diodes are forward biased, the passband shifts to S band of 2.7-3.6 GHz. The 28.6% relative bandwidth in both frequency bands remains constant. The simple design realizes the active switching between bands, providing a promising idea for active adjustable devices.

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A Bandwidth Reconfigurable Bandpass Filter for Ultrawideband and Wideband Applications

Cited by 20 publications

References 22 publications

Novel FR4‐based low loss reconfigurable filter with four operating modes using movable transmission lines

Novel FR4‐based low loss reconfigurable filter with four operating modes using movable transmission lines

Compact Single Notch UWB Bandpass Filter with Metamaterial and SIW Technique

A Compact Bandpass Filter with Active Switchable Passband Status

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