A Novel Synthesis for Bandwidth Switchable Bandpass Filters Using Semi-Conductor Distributed Doped Areas

Allanic, Rozenn; Berre, Denis Le; Quéré, Yves; Quendo, Cédric; Chouteau, David; Grimal, Virginie; Valente, Damien; Billoue, Jérôme

doi:10.1109/access.2020.3006709

Cited by 9 publications

(9 citation statements)

References 32 publications

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“…The depth of the two junctions is around 3 µm. The process steps are described in [27]. Indeed, only two masks are required for the manufacturing, as illustrated in Figure 5.…”

Section: First Antenna Fabricationmentioning

confidence: 99%

On-Chip Polarization Reconfigurable Microstrip Patch Antennas Using Semiconductor Distributed Doped Areas (ScDDAs)

et al. 2022

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This paper presents two polarization reconfigurable patch antennas using semiconductor distributed doped areas (ScDDAs) as active components. One proposed antenna has a switching polarization between two linear ones, while the other one has a polarization able to commute from a linear to a circular one. The antennas are designed on a silicon substrate in order to have the ScDDAs integrated in the substrate, overcoming the needs of classical PIN diodes. Therefore, the proposed co-design method between the antenna and the ScDDAs permits us to optimize the global reconfigurable function, designing both parts in the same process flow. Both demonstrators have a resonant frequency of around 5 GHz. The simulated results fit well with the measured ones.

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“…The depth of the two junctions is around 3 µm. The process steps are described in [27]. Indeed, only two masks are required for the manufacturing, as illustrated in Figure 5.…”

Section: First Antenna Fabricationmentioning

confidence: 99%

On-Chip Polarization Reconfigurable Microstrip Patch Antennas Using Semiconductor Distributed Doped Areas (ScDDAs)

et al. 2022

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“…7(d). By employing the even-and oddmode analysis along the symmetry AA" the even and odd mode resonant conditions are derived in (17) and (18) respectively,…”

Section: Filter Design For Bpf and Bsfmentioning

confidence: 99%

“…Therefore recently, reconfigurable filters have become an essential component in wireless systems and have attracted a lot of attention. Even though tunable single and multiband filtering components have been proposed [14][15][16][17][18][19][20][21][22][23][24] with a number of advantages, they usually serve a single purpose (either tunable BPF or tunable BSF). Few researchers [25][26][27][28][29][30][31][32] have presented fully reconfigurable filtering circuits exhibiting BPF-to-BSF switching capability.…”

Section: Introductionmentioning

confidence: 99%

Novel Selective Feeding Scheme Integrated With SPDT Switches for a Reconfigurable Bandpass-to-Bandstop Filter

et al. 2021

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This paper demonstrates a new technique for designing high performance reconfigurable bandpass-to-bandstop filters by employing a ring resonator and a selective feeding scheme integrated with single-pole double-throw switches (SPDT). The transformation from bandpass-to-bandstop mode and viceversa is achieved by connecting or disconnecting two λ g /4 open-circuited stubs on the ring using PIN diodes. SPDT switches are employed for electronic switching between two different feeding line sections. In the bandpass state the resonator presents two transmission zeros near the edges of the passband and four attenuation poles inside the passband, enhancing the filter"s performance, thus achieving excellent sharp rejection with high roll-off-rate (ROR 20dB). On the other hand, high stopband rejection with wide bandwidth, good return loss and good skirt-band attenuation rates are achieved in the bandstop state. Even-and oddmode analysis is adopted and closed-form expressions are derived to describe the filter"s behaviour. To verify the validity of the proposed design, a prototype filter was fabricated and measured. In measurement, a 65% 3-dB bandwidth bandpass filter (BPF) with an insertion loss of 0.86 dB was switched to a 70% 20-dB bandwidth bandstop filter (BSF) with more than 40 dB stopband rejection. INDEX TERMS Bandpass filter (BPF), bandstop filter (BSF), PIN diodes, ring resonator, single-poledouble-throw (SPDT).

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“…This demonstrator was fabricated with only two masks: one for the doping steps and one for the metallization steps of the upper side. The manufacturing steps are detailed in [27].…”

Section: Fabrication and Measurementsmentioning

confidence: 99%

“…In order to counter these issues, reconfigurable RF components can be co-designed using semiconductor distributed doped areas (ScDDAs), such as in [23][24][25][26][27]. By designing a tunable RF device with ScDDAs, we can obtain a tunability comparable to that of classical technology with SMCs while avoiding the need for other components.…”

Section: Introductionmentioning

confidence: 99%

Switchable DBR Filters Using Semiconductor Distributed Doped Areas (ScDDAs)

et al. 2020

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This paper presents a novel way to switch dual-behavior resonator (DBR) filters without any additional active surface-mount components. By using a semiconductor substrate, we were able to simultaneously co-design the filters and semiconductor distributed doped areas (ScDDAs) with integrated N+PP+ junctions as active elements. These ScDDAs act as electrical vias in the substrate, which makes it possible to have an open-circuited resonator in the OFF state and a short-circuited resonator in the ON state, and, consequently, to control the transmission zeroes of the filters. This method offers degrees of freedom as the dimensions and positions of these doped areas can be chosen to obtain the best performances. In this study, four filters were simulated and fabricated to spotlight different possibilities for the dimensions and positions of the ScDDA to control the low- or high-frequency transmission zero of the filters. The simulations were in very good agreement with the measured results. All the filters present insertion losses lower than 2 dB in the OFF and ON states, a great flexibility in the frequency choice, and good agility compared with the state of the art.

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A Novel Synthesis for Bandwidth Switchable Bandpass Filters Using Semi-Conductor Distributed Doped Areas

Cited by 9 publications

References 32 publications

On-Chip Polarization Reconfigurable Microstrip Patch Antennas Using Semiconductor Distributed Doped Areas (ScDDAs)

On-Chip Polarization Reconfigurable Microstrip Patch Antennas Using Semiconductor Distributed Doped Areas (ScDDAs)

Novel Selective Feeding Scheme Integrated With SPDT Switches for a Reconfigurable Bandpass-to-Bandstop Filter

Switchable DBR Filters Using Semiconductor Distributed Doped Areas (ScDDAs)

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