Coplanar pHEMT MMIC frequency multipliers for 76-GHz automotive radar

Campos-Roca, Y.; Verweyen, L.; Neumann, M.; Fernandez-Barciela, M.; Curras-Francos, M.C.; Sánchez‐Sánchez, Enric; Hulsmann, A.; Schlechtweg, M.

doi:10.1109/75.769534

Cited by 28 publications

(7 citation statements)

References 9 publications

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“…Comparing previous reported stand alone frequencymultipliers, this MMIC features a high multiplication factor together with > 20 dB better suppression of unwanted harmonics than demonstrated in [3], [5], [9]. At 80 GHz the MMIC shows a conversion gain of 24.5 dB, corresponding to more than 10 dB of conversion gain without any post-amplification stage.…”

Section: State-of-the-artmentioning

confidence: 60%

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E-band active frequency-multiplier-by-eight MMIC with >20 dB conversion gain and excellent spurious suppression

Lewark

Tessmann

Maßler

et al. 2012

2012 IEEE/MTT-S International Microwave Symposium Digest

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We present an active eight-fold frequencymultiplier with more than 20 dB conversion gain. The output 3-dB bandwidth is 72 to 85 GHz, forming a tunable frequency source within the 71 to 76 and 81 to 86 GHz communication bands with a saturated output power of 10 dBm for LO generation with an input power of only -8 dBm. The suppression of unwanted harmonics is better than 37 dBc. The MMIC is realized in a metamorphic HEMT technology with 100 nm gate-length.

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Section: State-of-the-artmentioning

confidence: 60%

“…Most previously presented frequency multipliers have multiplication factors smaller than four [2]- [5] and fundamental VCO approaches suffer from poor bandwidth [6], [7]. In this paper a frequency multiplier-by-eight reaching Eband frequencies with X-band (8 to 12 GHz) input signals is presented.…”

Section: Introductionmentioning

confidence: 98%

E-band active frequency-multiplier-by-eight MMIC with >20 dB conversion gain and excellent spurious suppression

Lewark

Tessmann

Maßler

et al. 2012

2012 IEEE/MTT-S International Microwave Symposium Digest

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“…Some examples of active frequency doublers and triplers with output frequencies in the 76–77 GHz band are Ref. 1, 2 and Ref. 3, 4, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…The lack of information on this topic motivates the realization of further investigations. The study presented here has been performed on a compact single‐stage 19/76 GHz frequency quadrupler [1]. This MMIC has been characterized in terms of phase noise degradation, including the calculation of the AM‐PM noise conversion coefficient for different values of the input power level.…”

Section: Introductionmentioning

confidence: 99%

AM‐PM Conversion in a W‐band frequency quadrupler

Campos-Roca

2010

Micro & Optical Tech Letters

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The noise conversion properties of a W‐band PHEMT‐based frequency quadrupler have been investigated. The study includes the experimental evaluation of the quadrupler amplitude‐modulated to phase‐modulated (AM‐PM) conversion coefficient and its implications in the phase noise degradation. The results show that this effect must be taken into account at offset frequencies where the input PM/AM noise ratio is poor. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:47–51, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25621

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“…As the coplanar HMICs (Hybrid Microwave Integrated Circuits) and MMICs (Microwave and millimeter-wave Monolithic Integrated Circuits) have found in many applications such as automotive radar and local multi-points communication system, several types of coplanar waveguides (CPW) transitions appear in these modern circuits where packaging density increases with the complexity of the design [1][2]. An important defect of the CPW is the slot mode generation due to the asymmetric discontinuities, such as bends and T-junctions [3].…”

Section: Introductionsmentioning

confidence: 99%

Characteristic of the coplanar waveguide to microstrip right-angled transition

Lee

Lee²

2000 Asia-Pacific Microwave Conference. Proceedings (Cat. No.00TH8522)

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In this paper, we characterize a CPW to Microstrip right-angled transition with a via-hole in a frequency from 1 to 10 GHz. This CPW to Microstrip transition shows resonance due to a phase difference at the via-hole discontinuity. The air-bridge just shifting the resonance frequency can not suppress the occurrence of the slot mode, fundamentally. The proposed structure using CPW to Microstrip 180° via-hole transition and microstrip bend suppressed this resonance, effectively. The simulated results of the proposed structure shows very good insertion loss less than 0.5 dB up to 10 GHz.

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Coplanar pHEMT MMIC frequency multipliers for 76-GHz automotive radar

Cited by 28 publications

References 9 publications

E-band active frequency-multiplier-by-eight MMIC with >20 dB conversion gain and excellent spurious suppression

E-band active frequency-multiplier-by-eight MMIC with >20 dB conversion gain and excellent spurious suppression

AM‐PM Conversion in a W‐band frequency quadrupler

Characteristic of the coplanar waveguide to microstrip right-angled transition

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