New-Wave Radio

Bosisio, R.G.; Zhao, Yanyang; Xu, Xinyu; Abielmona, S.; Moldovan, E.; Xu, Yansheng; Bozzi, Maurizio; Tatu, Serioja Ovidiu; Nerguizian, Chahé; Frigon, Jean-François; Caloz, Christophe; Wu, Ke

doi:10.1109/mmm.2007.910923

Cited by 36 publications

(25 citation statements)

References 19 publications

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“…Its measured insertion loss (about −5 dB) is seen to be unsatisfactory for its applications. This kind of phase shifter can be applied in six-port junction to replace the 90 • microstrip line phase shifter, whose main disadvantage is the narrow bandwidth (about only 10% relative bandwidth for 90 • ± 5 • ) [18,19].…”

Section: Simulation and Experiments Resultsmentioning

confidence: 99%

An Improved Broadband Siw Phase Shifter With Embedded Air Strips

Hao¹,

Xia²,

Tatu³

et al. 2016

PIER C

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Abstract-In this paper, an improved broadband substrate integrated waveguide (SIW) phase shifter with embedded air strips is presented. Phase shifter can be generated based on the variable widths of SIW, variable lengths of microstrip line and a row of embedded air strips. The simulated and measured results both show that this kind of SIW phase shifter has excellent performance for a wider bandwidth. Measured results indicate that the proposed SIW phase shifters for the 45 • and 90 • versions have achieved the fractional bandwidths of 59.6% from 10.2 to 18.85 GHz with the accuracy of 2.5 • , and of 62.3% from 9.5 to 18.1 GHz with the accuracy of 5 • , respectively. The return losses are better than 15.8 dB and 14.5 dB for 45 • and 90 • modules, respectively. In addition, the insertion losses are both found to be better than 1.6 dB in the considered band.

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Section: Simulation and Experiments Resultsmentioning

confidence: 99%

An Improved Broadband Siw Phase Shifter With Embedded Air Strips

Hao¹,

Xia²,

Tatu³

et al. 2016

PIER C

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“…The multiport circuit is always composed by four couplers, which can be 90° hybrids, power detectors, or rat-race ones. The choice of the couplers is related to the designer experience, operating frequency, required size, and shape of the circuit [6]. The main advantage of using the multiport module in down-conversion or direct demodulation is the reduced LO power to operate.…”

Section: Multiport Down-conversion and Direct Demodulationmentioning

confidence: 99%

“…The input LO-power is mostly related to the output RF-power, as illustrated by (6). This relationship gives the possibility to directly control the level of the output RF signal through the LO input power and, eventually, to avoid the use of power-hungry and high-complexity power amplifiers (PAs).…”

Section: Six-port Modulator Dependenciesmentioning

confidence: 99%

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Multiport Technology: The New Rise of an Old Concept

et al. 2014

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Abstract-A short review of the multiport (six-port) theory for modern applications in downconversion, direct demodulation or modulation of RF signals, and new measurement techniques for localization is presented in this paper. More than four decades ago, the circuit was developed for low-cost S-parameter measurements of microwave circuits. The modifications required to transform original six-port instrument function to radio function was not obvious in the beginning. In this purpose, several innovations have been implemented during the last two decades. Implementations of the circuit in various mature fabrication technologies, covering frequencies from microwave to millimeter wave spectrum, are presented and discussed. Multiport receiver calibration and impairment mitigation techniques are also proposed at frequencies where analog-to-digital converters and digital signal processing are available.

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“…I-Q mod/demodulators cannot operate in very large frequency ranges, so the use of zero-IF and low-IF architectures is limited by these devices. Six-port network is an interesting direct conversion architecture that is nowadays emerging as a promising alternative [4][5][6][7], as it does not use I-Q mixers for the frequency conversion. The main characteristic of the six-port architecture is its extremely large bandwidth, which involves multi-band and multi-mode capabilities.…”

Section: Introductionmentioning

confidence: 99%

Four-Octave Six-Port Receiver and Its Calibration for Broadband Communications and Software Defined Radios

Morena¹,

Burgos-García²

2011

PIER

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Abstract-This paper presents a software defined radio six-port receiver for a novel broadband mobile communications system. The prototype covers the frequency range from 0.3 GHz to 6 GHz, and operates with up to 100 MHz-wide channels. The multi-band and multi-mode demodulation capabilities of the six-port architecture have been experimentally demonstrated. The six-port receiver has been satisfactorily proved for high data rates (up to 93.75 Mb/s, limited by the available test instruments). An efficient six-port autocalibration method suitable for large instantaneous bandwidth systems is presented and validated.

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New-Wave Radio

Cited by 36 publications

References 19 publications

An Improved Broadband Siw Phase Shifter With Embedded Air Strips

An Improved Broadband Siw Phase Shifter With Embedded Air Strips

Multiport Technology: The New Rise of an Old Concept

Four-Octave Six-Port Receiver and Its Calibration for Broadband Communications and Software Defined Radios

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