Silicon-Integrated Differential Bandpass Filters Based on Recursive and Channelized Principles and Methodology to Compute Their Exact Noise Figure

Darfeuille, Sébastien; Lintignat, Julien; Gómez‐García, Roberto; Sassi, Zoheir; Barelaud, Bruno; Billonnet, Laurent; Jarry, Bernard; Marie, H.; Gamand, P.

doi:10.1109/tmtt.2006.885906

Cited by 12 publications

(4 citation statements)

References 28 publications

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“…• Channelized or generalized-transversal microwave active filters were subsequently devised to overcome the aforementioned limitations [28], [30]. They are shaped by the parallel connection of several unilateral frequency-dependant-processing channels to improve selectivity for bandpass, low-pass, and fixed-frequency/tunable notch filtering functions in reduced-size physical implementations [28]- [31]. The main shortcoming of this kind of microwave active filters is the increase of the design complexity, although partially circumvented for two-branch realizations in [32].…”

Section: Introductionmentioning

confidence: 99%

A Digital Interpretation of Frequency-Periodic Signal-Interference Microwave Passive Filters

Muñoz‐Ferreras

Gómez‐García

2014

IEEE Trans. Microwave Theory Techn.

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This paper addresses, for the first time, the digital representation of spectrally periodic signal-interference microwave passive filters. Starting from the theoretical rational transfer function of a synthesized transmission-line signal-interference analog filter, the real-valued coefficients of its digital-domain filter counterpart are derived. This discrete-time formulation for this type of microwave filters allows to clarify some confusing concepts into them, such as filter order. Moreover, some particular phenomena observed in associated experimental proof-of-concept planar prototypes, such as the appearance of out-of-band/spurious resonance peaks, are also explained by this study as zero-pole quasi-cancellations. In addition, it is demonstrated here that the use of the adjective "transversal" for this class of microwave passive filters could be no rigorous as it is understood in a digital sense since its discrete-time modeling commonly obeys an infinite-impulse-response structure. For validation, the expounded theoretical framework is applied to three examples of signal-interference passive filters exhibiting quasi-elliptic-type single-passband, six-passband, and low-pass responses.

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Section: Introductionmentioning

confidence: 99%

A Digital Interpretation of Frequency-Periodic Signal-Interference Microwave Passive Filters

Muñoz‐Ferreras

Gómez‐García

2014

IEEE Trans. Microwave Theory Techn.

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“…Far from the traditional way to design a bandstop filter, a different approach based on channelised techniques can be used to generate bandstop filter response. Channelised filter techniques were mainly applied to designing bandpass filter applications [12][13][14] and very few research papers address the realisation of bandstop filters [15,16]. In [15], the potential of channelised notch filter techniques was largely demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Tunable channelised bandstop passive filter using reconfigurable phase shifter

Lababidi

Shami

Roy

et al. 2019

IET Microwaves, Antennas & Propagation

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A novel tunable channelized two-branches passive bandstop filter using a reconfigurable parallel-coupled-line-based Phase Shifter (PS) is presented. The filter topology uses the signal destructive principle and aims to protect the receiver against an unwanted interference signal received by the antenna. The global filter topology contains two branches, each of which has a different function. The bandpass tunable branch selects the frequency to be rejected while the reconfigurable PS plays the signal invertor role. The simultaneous tunability of both bandpass and PS branches is ensured by using identical varactor diodes and features 550-700 MHz tuning range. In addition of having a constant and relatively high rejection level over all the tuning range and low insertion loss in the passband area, the filter guaranties ultra-low power consumption. Moreover, synthesis equations are proposed and used to illustrate the operating principle, and finally validated by comparing simulations results to measurements.

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“…For planar substrates, untypical filtering networks, such as in-parallel transmission-line stages, power couplers/dividers and baluns arranged in reflection mode, have been proposed for microwave-tomillimetre-wave bands [12][13][14][15][16][17][18][19][20][21][22]. Signal-interference structures have also shown their suitability for active filtering in recursive, transversal and channelised schemes for hybrid-and integrated-circuit technologies [23][24][25][26]. Moreover, electronic reconfigurability has also been added to them, enabling frequency-agile filter functions to be performed [26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

“…Signal-interference structures have also shown their suitability for active filtering in recursive, transversal and channelised schemes for hybrid-and integrated-circuit technologies [23][24][25][26]. Moreover, electronic reconfigurability has also been added to them, enabling frequency-agile filter functions to be performed [26][27][28][29][30][31]. Modern advances in the development of efficient tunable notch filters, aimed at the mitigation of interfering signals in ultra-wideband systems, are the best exponent of this trend [31].…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable‐bandwidth bandpass filter within 10–50%

Sánchez-Soriano

Gómez‐García²,

Torregrosa‐Penalva

et al. 2013

IET Microwaves, Antennas & Propagation

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An original and simple approach to design electronically reconfigurable‐bandwidth microwave planar bandpass filters is reported. It exploits the use of transversal signal‐interference filtering sections shaped by a branch‐line directional coupler arranged in reflection mode with switchable stubs. Thus, by switching on/off these stubs through p–i–n diodes, sharp‐rejection filtering functions with different bandwidths and multiple out‐of‐band transmission zeros are produced. Analytical equations and guidelines for the synthesis of the basic switchable filter building block are detailed. Moreover, a 2 GHz two‐stage proof‐of‐concept microstrip prototype, with five distinct bandwidth states ranging from ∼10 to 50%, is built and characterised for experimental verification.

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Silicon-Integrated Differential Bandpass Filters Based on Recursive and Channelized Principles and Methodology to Compute Their Exact Noise Figure

Cited by 12 publications

References 28 publications

A Digital Interpretation of Frequency-Periodic Signal-Interference Microwave Passive Filters

A Digital Interpretation of Frequency-Periodic Signal-Interference Microwave Passive Filters

Tunable channelised bandstop passive filter using reconfigurable phase shifter

Reconfigurable‐bandwidth bandpass filter within 10–50%

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