A new direct millimeter wave six-port receiver

Tatu, Serioja Ovidiu; Moldovan, E.; Wu, Ke; Bosisio, R.G.

doi:10.1109/mwsym.2001.967258

Cited by 47 publications

(38 citation statements)

References 5 publications

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“…The Six-Port architecture is an innovative receiver design which can perform a direct-baseband downconversion of a signal, by means of an additive mixing process [3] [4]. It allows low cost millimeter wave receiver implementation, it is extremely accurate in phase measurements and is mainly composed of passive structures, thus meaning robust design, and repeatability [5].…”

Section: Six-port Technologymentioning

confidence: 99%

Employing six-port technology for phase-measurement-based calibration of automotive radar

Vinci

Koelpin

Weigel

2009

2009 Asia Pacific Microwave Conference

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Radar technology is today a key feature for the automotive industry and is becoming of greater importance among most car-producers. Its applications range from cruise control, to pre-crash and parking aid systems. Radar units are already being mounted on several automobiles. Such systems employ high-tech devices and state of the art technology, optimized for robustness and reliability. Specific techniques have been developed to build and install radar devices on board of the vehicles. In particular, precise calibration techniques are being used to set the devices and adjust them so to meet the wanted operation requirements. Radar devices used for adaptive cruise control, installed in front of the vehicle to scan the road ahead in the driving path need a particularly fine adjustment to be as reliable as required by the automotive security standards. Calibration issues in nowadays trimming techniques are causing major problems in the employment of such radar systems. In particular, misalignment of the radar cruise control sensor in respect to the driving axis of the vehicle is leading to false interpretations and reading errors. In this paper, a new, innovative and precise calibration technique is proposed to solve the current calibration problems, focusing on a special microwave measurement technique for enhanced accuracy and reliability.

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Section: Six-port Technologymentioning

confidence: 99%

Employing six-port technology for phase-measurement-based calibration of automotive radar

Vinci

Koelpin

Weigel

2009

2009 Asia Pacific Microwave Conference

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“…Sixport Reflectometer operation with an MMIC using nonmatched diode detectors with high input impedances was demonstrated at operation frequencies between 1.3 and 3.0 GHz [16]. A Millimeter-Wave (23-31 GHz) Six-Port Receiver with a maximum bit rate of 58 Mb/s for a bit error rate (BER) less than 10-6 has been reported [17].…”

Section: Sixport Receiver -An Alternative Dcr Conceptmentioning

confidence: 99%

Software Configurable Receivers

Luy

2002

32nd European Microwave Conference, 2002

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Heterodyne and Direct Conversion Homodyne receivers have been studiedfor a long time. It can be shown that the classical advantages as high sensitivity and high selectivity can not be transferred easiliy to the requirements arising from software configurable systems. Already for a dualfrequency receiver the Direct Conversion approach has a clear cost advantage. However, these types ofreceivers require significant effortsfor the correction ofstatic and dynamic errors which in practical cases very often reduce sensitivity and flexibility. Sixport non-mixcing direct conversion architectures may be a multiple alternative to the aformentioned structures: The rectifying process can be very broadband and therefore multi-band capable and the front-end provides a low cost potential. Re-configurable receivers with direct RF sampling can provide multimode, multirate and multiband functions in a single hardware platform. The current bottleneck in the direct digitizing receivers is the analog to digital converter. With currently available analog to digital converters bandpass limited sub-sampling in the carrier frequency range of up to I GHz is possible. The concept of bandpass limited subsampling became recently a very suited architecture approach as the increasing cut-off frequency and speed of semiconductor technologies can be traded against resolution in this concept. Direct digital receiversfor broadcast standards becomefeasible. At still higherfrequencies new analog to digital converter architectures have to be investigated. The specific design of the hardware architecture becomes more and more a compromise between the specifications of the services to be handled by the receiver and the availability of components.Services and standards which rely on a spread spectrum modulation are especially suitedfor direct digital receivers, as the inherent correlation gain, which is achieved in spread spectrum receivers, lowers the requirements with respect to receiver dynamics. The high speed building blocks of a millimeter wave direct digital receiver are composed by low-pass or band-pass filters, the sampling and analogue to digital converter circuits and the decimatorfunctions which convert the high speed sampling rates into lower rates and higher resolution, respectively. The RFfi lters must reduce outof-band spurious harmonics -which can be generated by nearby systems or internal non-linearities -andprovide small in-band transmission losses. Three dimensional micromachined structures can provide high quality factors and low insertion losses at carrier frequencies of 24 GHz. Transimpedance amplifiers for a bandpass limited subsampling approach and limiting amplifiers can be designed and realized in commercial SiGe technology. A sampling head itsself is composed ofa Schottky diode quadruple.

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“…There have been much interest recently in using sixport correlators in communication devices [1], especially for demodulators where a six-port correlator is used together with non-linear power detectors to generate the baseband inphase (I) and quadrature-phase (Q) data [2]- [5]. The sixport correlator, together with variable loads, can also be used for modulation to generate a radio frequency (RF) signal, including both I and Q data [6]- [8].…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of six-port receivers with simplified interface to amplifier and filter

Osth

Owais

Karlsson

et al. 2011

2011 IEEE International Conference on Ultra-Wideband (ICUWB)

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The performance of two different six-port demodulator prototypes for the UWB band 6 to 8.5 GHz are presented. Both configurations allow for a simplified interface to amplifier and filter. In addition, one of the configurations also have oddorder harmonic suppression. Measurements show good modulation properties when a 16 quadrature amplitude modulation signal at 100 Msymbols/s is demodulated for both prototypes. The performance of the two prototypes are compared in terms of error vector magnitude, bit error rate, sensitivity and dynamic range.

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A new direct millimeter wave six-port receiver

Cited by 47 publications

References 5 publications

Employing six-port technology for phase-measurement-based calibration of automotive radar

Employing six-port technology for phase-measurement-based calibration of automotive radar

Software Configurable Receivers

Performance evaluation of six-port receivers with simplified interface to amplifier and filter

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