Broadband Five-Port Direct Receiver Based on Low-Pass and High-Pass Phase Shifters

Perez-Lara, P.; Molina-Fernández, I.; Wangüemert‐Pérez, J. Gonzalo; Rueda-Perez, Antonio

doi:10.1109/tmtt.2010.2041517

Cited by 11 publications

(7 citation statements)

References 14 publications

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“…5, or equivalently in matrix form as Table 2 shows the parameters introduced in Eq. (14). Three parameters describe the photocurrents obtained at each of the three output ports: DC offset real parameter (α), signal power-dependent real parameter (γ) and LO-signal power-dependent complex parameter (u).…”

Section: Setupmentioning

confidence: 99%

“…Fortunately, other types of phase diversity downconverters exist which are not based on the 90° hybrid. This is the case of the 120° phase diversity receiver, a type of the well-known multiport radiofrequency receiver [13], which has been recently used as a wide bandwidth, hardware-impairment tolerant receiver at microwave frequencies [14]. This kind of 120° downconverters, although not very frequent, have also been reported for optical communications by making use of 3x3 fiber couplers: 680 Mbps Amplitude-Shift Keying demodulation was already demonstrated in the eighties [6], and 1.4 Gbps 4-QAM has been recently reported based on this approach [15].…”

Section: Introductionmentioning

confidence: 99%

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High-performance monolithically integrated 120° downconverter with relaxed hardware constraints

Reyes-Iglesias¹,

Molina-Fernández²,

Moscoso-Mártir³

et al. 2012

Opt. Express

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A coherent receiver based on a 120° downconverter architecture, inherited from previous approaches at the microwave and optical fields, is proposed, analyzed, numerically evaluated and compared to the conventional 90° downconverter alternative. It is shown that, due to its superior calibration procedure, the new downconverter architecture allows full compensation of the imbalances in its optical front-end thus leading to an extended dynamic range and a broader operating bandwidth than its 90° counterpart. Simulation results from monolithically integrated downconverters show that our approach can be an interesting alternative to support efficient modulation schemes such as M-QAM that is being studied as potential candidate for the next generation of optical communication systems.

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Section: Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-performance monolithically integrated 120° downconverter with relaxed hardware constraints

Reyes-Iglesias¹,

Molina-Fernández²,

Moscoso-Mártir³

et al. 2012

Opt. Express

View full text Add to dashboard Cite

show abstract

“…On the other hand, the downside of this lies in the use of 4 ADCs at the outputs of the system. However, in direct-conversion receiver applications, the number of ADCs can be reduced to 3 by using the so-called five-port technique [21][22][23][24][25][26]. In this particular case, the power level of the local oscillator (LO) is supposed to be constant or prone to very small variations, which accordingly permits the suppression of one ADC.…”

Section: Introductionmentioning

confidence: 99%

Performance of 2–3.6 GHz Five-Port/Three-Phase Demodulators with Baseband AnalogI/QRegeneration Circuit in Direct-Conversion Receivers

Kaissoine

Khy

Mabrouk

et al. 2014

Journal of Electrical and Computer Engineering

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A comparison between performance of a five-port demodulator (FPD) and a three-phase demodulator (TPD) with both architectures connected to a so-called basebandI/Qregeneration circuit is carried out. In order to compare these two receivers to a classical architecture, the performance of anI/Qdemodulator (IQD) is also presented. Measured results show the superiority of TPD and IQD over FPD in terms of residual DC offsets and 2nd order intermodulation distortion (IMD2) products, noise figure (NF), and sensitivity due to the use of active balanced mixers instead of diode power detectors. Lastly, demodulation of three noncontiguous RF carriers shows the stronger potential of the three-phase demodulator (TPD) for applications in future long term evolution-advanced (LTE-A) receivers through EVM and constellation diagram measurements.

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“…A promising alternative to overcome these problems is the 120° phase diversity receiver, which has been recently used as a hardware-impairment tolerant wideband receiver at microwave frequencies [7]. The 120° downconverter has been reported several times for optical communications by making use of 3x3 fiber couplers [8,9].…”

Section: Introductionmentioning

confidence: 99%

Enhanced monolithically integrated coherent 120° downconverter with high fabrication yield

Reyes-Iglesias¹,

Ortega‐Moñux²,

Molina-Fernández³

2012

Opt. Express

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Conventional monolithically integrated 90° downconverter suffers from hardware-induced non-linear constellation distortion, which gets worse far away from the central wavelength or when fabrication errors are taken into account. To overcome these problems, a 120° monolithically integrated downconverter with full compensation of hardware non-idealities has been proposed. It is numerically demonstrated that, in a realistic scenario exposed to the combined effects of fabrication tolerances and limited ADC resolution, this approach exhibits a significantly better signal dynamic range and a remarkable improvement of fabrication yield.

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Broadband Five-Port Direct Receiver Based on Low-Pass and High-Pass Phase Shifters

Cited by 11 publications

References 14 publications

High-performance monolithically integrated 120° downconverter with relaxed hardware constraints

High-performance monolithically integrated 120° downconverter with relaxed hardware constraints

Performance of 2–3.6 GHz Five-Port/Three-Phase Demodulators with Baseband AnalogI/QRegeneration Circuit in Direct-Conversion Receivers

Enhanced monolithically integrated coherent 120° downconverter with high fabrication yield

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