Integrated receiver components for low-cost 26 GHz LMDS applications using an 0.8 um Sige HBT technology

The authors have demonstrated integrated re-ceiver components addressing 26 GHz Local Multipoint Distribution Services (LMDS) applications using a standard SiGe HBT MMIC process with an layouted emitter width of 0.8 m. Compact circuit layout and transistor structure opti-mization are applied to a mature Si/SiGe technology, resulting in low-cost integrated circuits enabling consumer-oriented systems at 26 GHz. The integrated receiver components are a downconverter and a static 2:1 divider. The downconverter IC consists of a preamplifier and a mixer with an IF buffer. The conversion gain is determined to be 24 dB for an intermediate frequency of 200 MHz, and the maximum frequency of operation for the divider is 28.2 GHz

High Power Ultra Compact VCO with Active Reactance Concepts at 24 GHz

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Wafer Level Integration of a 24 GHz Differential SiGe-MMIC Oscillator with a Patch Antenna using BCB as a Dielectric Layer

This paper describes the wafer level inte-gration of a differential 24 GHz SiGe-MMIC oscillator including a buffer amplifier with a differentially driven patch antenna. The patch antenna is realized on 30 µm BCB (Benzo Cyclo Butene) used as a dielectric layer. The radiated power of the patch antenna driven by the oscillator is calculated based on measurements and the result is discussed

A GaAs distributed amplifier with an output voltage of 8.5Vpp for 40Gb/s modulators

In this paper, we report on a Distributed Amplifier (DA)with positive gain slope and 8.5 Vpp out put voltage swing at 20 GHz. This makes the amplifier suitable for driving LiNbO3 modulators. The amplifier consists of six cascode cells and is fabricated in a commercially available 150nm GaAs power pHEMT technology. Gain equals to 9.8 dB at low frequencies and rises up to 12.8 dB at 38GHz. This amplifier is then cascaded with a preamplifier. Losses at high frequencies due to cascading are compensated by the positive gain slope of the amplifier described here. The cascaded amplifiers exhibit again of 19.5 dB and a bandwidth of 38GHz with a flat frequency response of ±0.6dB up to 28 GHz

Fully integrated millimeter-wave VCO with 32% tuning range

In this paper, the authors present a fully integrated VCO with 32% tuning range centered at 38.9 GHz. The VCO was designed using a commercially available, inexpensive 0.8 m Si/SiGe HBT technology with fT and fmax of 80 and 90 GHz, respectively. It consumes 195 mW DC power and provides an output power of more than 5 dBm. A phase noise of -93 dBc/Hz at 1 MHz offset was measured for the free running VCO

Analog synchronous receiver for multi-gigabit wireless communications

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Relationship between food insecurity and housing instability on quality of care and quality of life in adults with diabetes

Objective Examine the relationship between food and housing insecurities, quality of care and quality of life in adults with diabetes using a nationally representative data source. Methods Data from 39,604 adults with diabetes who indicated if they experienced food and/or housing insecurity in the Behavioral Risk Factor Surveillance System (2014, 2015, 2017) was analyzed. Outcomes included quality of care (HbA1c test, eye exam, diabetes education, foot check) and quality of life (general health status, poor physical and mental health days, poor overall health days). Logistic models were run for each quality of care measure and linear models were run for each quality of life measure adjusting for socio-demographics, insurance status, and comorbidity count. Results 35.6% of adults with diabetes reported housing insecurity, 31.8% reported food insecurity, and 23.4% reported both. After adjustment, food and housing insecurity was significantly associated with lower odds of having an eye exam (housing:0.73, 95%CI:0.63,0.85; food:0.78, 95%CI:0.67,0.92; both:0.69, 95%CI:0.59,0.82), worse general health status (housing:-0.06 95%CI:-0.11,-0.01; food:-0.16, 95%CI:-0.21,-0.10; both:-0.14, 95%CI:-0.20,-0.09), and an increased number of poor mental health days (housing:1.73, 95%CI:0.83,2.63; food:2.08, 95%CI:1.16,3.00; both:1.97, 95%CI:1.05,2.90). Food insecurity was also associated with lower odds of receiving diabetes education (0.86, 95%CI:0.74,0.99) and an increased number of poor physical health days (0.95, 95%CI:0.14,1.76). Conclusion Changes to our healthcare delivery system are critical to improving standards of care and quality of life in all populations and may require a shift towards consideration of overlapping social risk factors rather than the siloed approach currently used

Relationship between food insecurity and housing instability on quality of care and quality of life in adults with diabetes.

ObjectiveExamine the relationship between food and housing insecurities, quality of care and quality of life in adults with diabetes using a nationally representative data source.MethodsData from 39,604 adults with diabetes who indicated if they experienced food and/or housing insecurity in the Behavioral Risk Factor Surveillance System (2014, 2015, 2017) was analyzed. Outcomes included quality of care (HbA1c test, eye exam, diabetes education, foot check) and quality of life (general health status, poor physical and mental health days, poor overall health days). Logistic models were run for each quality of care measure and linear models were run for each quality of life measure adjusting for socio-demographics, insurance status, and comorbidity count.Results35.6% of adults with diabetes reported housing insecurity, 31.8% reported food insecurity, and 23.4% reported both. After adjustment, food and housing insecurity was significantly associated with lower odds of having an eye exam (housing:0.73, 95%CI:0.63,0.85; food:0.78, 95%CI:0.67,0.92; both:0.69, 95%CI:0.59,0.82), worse general health status (housing:-0.06 95%CI:-0.11,-0.01; food:-0.16, 95%CI:-0.21,-0.10; both:-0.14, 95%CI:-0.20,-0.09), and an increased number of poor mental health days (housing:1.73, 95%CI:0.83,2.63; food:2.08, 95%CI:1.16,3.00; both:1.97, 95%CI:1.05,2.90). Food insecurity was also associated with lower odds of receiving diabetes education (0.86, 95%CI:0.74,0.99) and an increased number of poor physical health days (0.95, 95%CI:0.14,1.76).ConclusionChanges to our healthcare delivery system are critical to improving standards of care and quality of life in all populations and may require a shift towards consideration of overlapping social risk factors rather than the siloed approach currently used

Innate, translation-dependent silencing of an invasive transposon in Arabidopsis

Co-evolution between hosts' and parasites' genomes shapes diverse pathways of acquired immunity based on silencing small (s)RNAs. In plants, sRNAs cause heterochromatinization, sequence degeneration, and, ultimately, loss of autonomy of most transposable elements (TEs). Recognition of newly invasive plant TEs, by contrast, involves an innate antiviral-like silencing response. To investigate this response's activation, we studied the single-copy element EVADÉ (EVD), one of few representatives of the large Ty1/Copia family able to proliferate in Arabidopsis when epigenetically reactivated. In Ty1/Copia elements, a short subgenomic mRNA (shGAG) provides the necessary excess of structural GAG protein over the catalytic components encoded by the full-length genomic flGAG-POL. We show here that the predominant cytosolic distribution of shGAG strongly favors its translation over mostly nuclear flGAG-POL. During this process, an unusually intense ribosomal stalling event coincides with mRNA breakage yielding unconventional 5'OH RNA fragments that evade RNA quality control. The starting point of sRNA production by RNA-DEPENDENT-RNA-POLYMERASE-6 (RDR6), exclusively on shGAG, occurs precisely at this breakage point. This hitherto-unrecognized "translation-dependent silencing" (TdS) is independent of codon usage or GC content and is not observed on TE remnants populating the Arabidopsis genome, consistent with their poor association, if any, with polysomes. We propose that TdS forms a primal defense against EVD de novo invasions that underlies its associated sRNA pattern.ISSN:1469-221XISSN:1469-317

Adjusted association between housing insecurity and food insecurity with quality of care measures in adults with diabetes, BRFSS (housing insecurity n = 8, 882; food insecurity n = 8,288).

Adjusted association between housing insecurity and food insecurity with quality of care measures in adults with diabetes, BRFSS (housing insecurity n = 8, 882; food insecurity n = 8,288).</p