Wideband Balanced-to-Balanced Microstrip-to-Coplanar Strip Transitions With Intrinsic Common-Mode Suppression

Ouyang, Zhao‐An; Li, Zhu; Qiu, Lei‐Lei

doi:10.1109/tmtt.2021.3082546

Cited by 9 publications

(8 citation statements)

References 31 publications

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“…Balanced filters are usually indispensable components to achieve high immunity to environmental noise and reduce crosstalk and electromagnetic interference for communication systems. In the literatures, various balanced filters have been proposed by transmissionline, [1][2][3][4] patch, [5][6][7][8] cavity, 9,10 and dielectric 11,12 resonators.…”

Section: Introductionmentioning

confidence: 99%

“…The other technique is to utilize transmission structures with intrinsic CM rejection such as the slotline 3 and the coplanar stripline. 4 In these designs, high CM suppression can be obtained easily but their applications are usually limited to the wideband system. Meanwhile, a non-negligible issue is that planar transmission lines are not competitive in terms of low loss and high capacity of power handling.…”

Section: Introductionmentioning

confidence: 99%

“…The other technique is to utilize transmission structures with intrinsic CM rejection such as the slotline 3 and the coplanar stripline 4 . In these designs, high CM suppression can be obtained easily but their applications are usually limited to the wideband system.…”

Section: Introductionmentioning

confidence: 99%

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Design of compact balanced filters with wide DM upper stopband and CM rejection band based on semi‐circular patch

Wang,

Guo,

Huang

et al. 2024

Micro & Optical Tech Letters

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A new design approach to achieve compact size and high common‐mode (CM) suppression of balanced filters is proposed with two back‐to‐back microstrip semi‐circular patch resonators. In feeding structures, metalized via holes are adopted to vertically feed patches by differential pairs. Then, TM11 mode is excited and TM31 mode can be rejected, resulting in wideband differential‐mode (DM) harmonic rejection. Besides, with a slotline etched in the common ground plane, desired coupling strength can be achieved for a target bandwidth. Meanwhile, by virtue of the stacked structure, source‐load coupling can be easily introduced to generate transmission zeros close to the passband. With theory guidance, two balanced filter prototypes centered at 2.4 GHz are designed. Simulation and measurement results both indicate that proposed balanced filters exhibit high DM and CM performances as well as a compact size about 0.26λg × 0.53λg.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design of compact balanced filters with wide DM upper stopband and CM rejection band based on semi‐circular patch

Wang,

Guo,

Huang

et al. 2024

Micro & Optical Tech Letters

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show abstract

“…In 11 , a coupled split-ring resonator to coplanar stripline has been demonstrated as a bandstop filter. A balanced CM suppression with a double-sided coplanar strip wideband is proposed in 12,13 . Three balanced microstrip-to-CPS transformations with excellent pure CM suppression and wideband DM filtering capabilities are presented in 13,14,15 and a miniaturized type of planar plasmonic waveguides with ultra-wideband filtering performance has been reported in 16 .…”

Section: Introductionmentioning

confidence: 99%

“…A balanced CM suppression with a double-sided coplanar strip wideband is proposed in 12,13 . Three balanced microstrip-to-CPS transformations with excellent pure CM suppression and wideband DM filtering capabilities are presented in 13,14,15 and a miniaturized type of planar plasmonic waveguides with ultra-wideband filtering performance has been reported in 16 . The PIN diode modeling for re-configurable filters 17,18 and antenna 19,20 are integrated to form a multi-band operating filter.…”

Section: Introductionmentioning

confidence: 99%

Design of Coplanar Stripline Bandpass Filter with Re-configurable Filter Switch

Basu,

Kho,

Nandi

2024

Preprint

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This paper has designed a bandpass filter using a coplanar stripline stub (CPS) resonator consisting of open and short-ended strip lines connected to the PIN Diode switches. The use of spurline stub resonators inside CPS results in bandpass and bandstop filters, depending on the PIN diode switch configurations. The work presents a novel circuit architecture aimed at reducing parasitic resonance of the spurline resonators and acquire the necessary series stub characteristics. The proposed filter resonates at 6.9-9 GHz and 1.7-4.7 GHz, and 8.4 GHz when the PIN diodes are forward and reverse-biased, respectively. It also resonates at 1-2.1 GHz, 4.8-5.3 GHz, and 6.9-9 GHz when one diode is reverse-biased, and the other is connected in forward bias. An insertion loss below -0.55 dB and a return loss less than 10dB have been obtained during simulation and measurement. The designed filter can find different applications for the 1.8 GHz GSM band, 2.4/5.8GHz (WLAN), 3.6 GHz (WiMAX), Long Term Evolution (LTE), and WIFI. The filter can be used in various multi-frequency systems owing to its compact size. The measured and simulated findings of the proposed CPS spurline stub resonator wideband bandpass filters are substantially consistent.

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Design of Coplanar Stripline Bandpass Filter With Reconfigurable Filter Switch

Kho,

Basu,

Nandi

2024

Int J Numerical Modelling

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This article has designed a bandpass filter using a coplanar stripline stub (CPS) resonator consisting of open and short‐ended strip lines connected to the PIN diode switches. The use of spurline stub resonators inside CPS results in bandpass and bandstop filters, depending on the PIN diode switch configurations. The work presents a novel circuit architecture aimed at reducing the parasitic resonance of the spurline resonators and acquiring the necessary series stub characteristics. The proposed filter resonates at 6.9–9, 1.7–4.7, and 8.4 GHz when the PIN diodes are forward and reverse‐biased, respectively. It also resonates at 1–2.1, 4.8–5.3, and 6.9–9 GHz when one diode is reverse‐biased, and the other is connected in forward bias. An insertion loss below −0.55 dB and a return loss less than 10 dB have been obtained during simulation and measurement. The designed filter can find different applications for the 1.8 GHz GSM band, 2.4/5.8 GHz (WLAN), 3.6 GHz (WiMAX), long‐term evolution (LTE), and WIFI. The filter can be used in various multi‐frequency systems owing to its compact size. The measured and simulated findings of the proposed CPS spurline stub resonator wideband bandpass filters are substantially consistent.

show abstract

Wideband Balanced-to-Balanced Microstrip-to-Coplanar Strip Transitions With Intrinsic Common-Mode Suppression

Cited by 9 publications

References 31 publications

Design of compact balanced filters with wide DM upper stopband and CM rejection band based on semi‐circular patch

Design of compact balanced filters with wide DM upper stopband and CM rejection band based on semi‐circular patch

Design of Coplanar Stripline Bandpass Filter with Re-configurable Filter Switch

Design of Coplanar Stripline Bandpass Filter With Reconfigurable Filter Switch

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