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Session: WE2B10:10 AM Wednesday, June 18, 2008 Room: A312 |
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Session: WE2B | Advances in High Frequency Signal Sources |
Chair: | H. J. Kuno, QuinStar Technology |
Co-Chair: | Prasad Shastry, Bradley University |
Abstract: | This session summarizes advances in signal sources at K band and above. Papers presented include wideband VCO, FMCW Radar using digital PLS, K band SiGe Synthesizer IC, LTCC VCO, InGaP/GaAs HBT and CMOS VCO. |
| | WE2B-01 | A Novel Ring-Based Triple-Push 0.2-to-34 GHz VCO in 0.13-μm CMOS Technology | 1049 | C. C. Li, C. C. Chen, B. J. Huang, P. C. Huang, K. Y. Lin, H. Wang, National Taiwan University, Taipei, Taiwan |
| A novel ring-based triple-push voltage-controlled oscillator (VCO) with a continuous range from 0.2 to 34 GHz is proposed and realized using a commercial 0.13-μm 1P8M CMOS process. The output power of the VCO is -18 dBm with only ±2 dB variation in the full band. The fundamental rejection is more than 15 dB, and the second harmonic rejection is more than 25 dB. This VCO achieves the widest continuous tuning range reported to date. | | |
WE2B-02 | A 77-GHz FMCW Radar using a Digital Phase-Locked Synthesizer | 1265 | C. Wagner1, R. Feger1, A. Haderer2, A. Fischer1, A. Stelzer2, H. Jaeger3, 1University of Linz, Linz, Austria, 2University of Linz, Linz, Austria, 3Danube Integrated Circuit Engineering, Linz, Austria |
| A digital phase-locked synthesizer for application in a 77-GHz frequency modulated continuous wave (FMCW) radar is presented. It consists of a digital phase discriminator, a digital loop filter, highpass modulation, and predistortion of the VCO tuning characteristic. An additional feature is the ability to store the previous phase errors for iterative adaptation of the loop filter coefficients and the highpass modulation parameter. A radar system has been built to compare the proposed digital synthesizer to an offset-loop based one in actual radar measurements. | | |
WE2B-03 | A single SiGe chip fractional-N 275 MHz…20 GHz PLL with integrated 20 GHz VCO | 1019 | R. Follmann1, D. Köther1, T. Kohl1, M. Engels1, T. Podrebersek1, H. Heyer2, K. Schmalz3, F. Herzel3, W. Winkler3, S. Osmany3, U. Jagdhold3, 1IMST GmbH, Kamp-Lintfort, Germany, 2Kayser-Threde GmbH, München, Germany, 3IHP, Frankfurt/Oder, Germany |
| Broad band satellite communication makes high demands on linear low phase noise signals. One example is HDTV. For this application converters are required (e.g. from 30 GHz to 20 GHz), which themselves require very low phase noise programmable synthesizers (LO). Most satellite companies today derive their 10 GHz LOs from multiplying a 100 MHz crystal oscillator again and again. Due to the arising sub-harmonics excessive filtering is required. Thus, today’s satellite LOs are large and quite heavy in weight. In this paper we demonstrate a single chip SiGe integrated fractional-N PLL, which can either be used with the internal integrated VCO between 18.5 and 20.0 GHz or with any external VCO between 275 MHz…20 GHz. The LO presented fulfills the high demands on phase noise for satellite applications. Furthermore, first radiation hardness steps such as triple model redundancy have already been implemented. | | |
WE2B-04 | Vertically Integrated Voltage-Controlled Oscillator in LTCC at K-Band | 1104 | T. Baras, A. F. Jacob, TU Hamburg-Harburg, Hamburg, Germany |
| A fully integrated K-band voltage controlled oscillator module is presented. The design is realized in low temperature co-fired ceramics, making extensively use of the multilayer features and advanced capabilities of this substrate system. The interior packaging technology exclusively utilizes flip-chip mounting of bare semiconductors. As a key element, a varactor-tuned substrate-integrated-waveguide resonator and the associated design constraints are presented. The hybrid oscillator is integrated in a hermetic surface mount package of 8mmx 12.5mm, achieving an output power of more than 6 dBm in a tuning range between 19.58GHz - 20.2GHz. The measured phase noise is -118 dBc/Hz at 1MHz offset, a figure-of-merit of -184.7 dB for this design. | | |
WE2B-05 | A K-Band Quadrature VCO Based on Asymmetric Coupled Transmission Lines | 1152 | C. Kim1, J. Yang1, D. Kim2, S. Hong1, 1Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea, 2Chungnam National University, Daejeon, Republic of Korea |
| A K-band quadrature voltage-controlled oscillator(QVCO) based on asymmetric coupled transmission lines is presented. Asymmetric coupled transmission lines are used to couple two identical LC tank oscillators for generation of a quadrature signal with comparable phase noise with reported QVCOs at the frequencies. The fabricated QVCO using InGaP/GaAs HBT technology shows the oscillation frequencies from 22.07 to 22.9 GHz. The frequency tuning range is about 830 MHz. The peak output power is 6 dBm. The phase noise of -121.17 dBc/Hz at 1 MHz offset and 185.6 of FOM are achieved at the operating frequency of 22.83 GHz. | | |
WE2B-06 | 27-GHz Low Phase-Noise CMOS Standing-Wave Oscillator for Millimeter Wave Applications | 1334 | T. Huang, P. You, National Cheng Kung University, Tainan, Taiwan |
| This work presents a 27-GHz low phase-noise standing-wave voltage controlled oscillator (VCO) design with the folded microstrip line structure over floating metal strips. Because the floating metal strips serve to retard the wave, the length of microstrip line (and thus the overall layout area) can be further reduced at a given frequency. Meanwhile, the floating metal strips reduce the substrate effect and improve the Q-factor of the microstrip line. The measurement results exhibit a tuning range from 26.26 GHz to 26.80 (27.55) GHz with the tuning voltage rising from 0.1 V to 1.8 (3.3) V. The measured phase-noise levels are around -115 dBc/Hz and -134 dBc/Hz at 1-MHz and 10-MHz offset, respectively. The DC power consumption of the oscillator core is 17.7 mW at the supply voltage of 1.8 V. The figure of merits (FOM) of this VCO is -191 dB. | | |
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