A SiGe Power Amplifier with Integrated BALUNs for 81-86 GHz E-Band Backhaul Applications

The design of a two-stage differential cascode power amplifier (PA) for 81-86 GHz E-band applications is presented. The PA was realised in SiGe technology with fT/fmax 170/250 GHz. A broadband transformer with efficiency higher than 79.4% from 71 GHz to 96 GHz is used as a BALUN. The PA delivers a 4.5 dBm saturated output power and exhibits a 13.4 dB gain at 83.6 GHz. The input and output return losses agree well with the design specifications.

Barnes Wines, LImited By-Law no. 81

The by-law reads: "A by-law to amend by-law no. 79 of the company by restricting the distribution of monies set aside for profit sharing to officers and employees regularly employed at the company's plant. Be it therefore enacted as a by-law of Barnes Wines, Limited as follows: That Schedule 'A' to By-Law no. 79 of the Company enacted on the 2nd day of February, 1953, be and the same is hereby amended by adding after the word "Company" in the last line of paragraph I thereof, the following: 'regularly employed at the Company's plant,' Enacted this 9th day of February, 1966. Witness the Corporate Seal of the Company. Unanimously confirmed by all the Shareholders of the Company at a Special General Meeting of the Shareholders of the Company held on the 21st day of February, 1966."

Ms.Ff.F.Stoltze 3. 81 - Brief von Anton Joseph Frey an Friedrich Stoltze

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Solar radiation over and under sea ice and photographic quantification of Ice algal aggregates during the POLARSTERN cruise ARK-XXVII/3 (IceArc) in summer 2012

The ice cover of the Arctic Ocean has been changing dramatically in the last decades and the consequences for the sea-ice associated ecosystem remain difficult to assess. Algal aggregates underneath sea ice have been described sporadically but the frequency and distribution of their occurrence is not well quantified. We used upward looking images obtained by a remotely operated vehicle (ROV) to derive estimates of ice algal aggregate biomass and to investigate their spatial distribution. During the IceArc expedition (ARK-XXVII/3) of RV Polarstern in late summer 2012, different types of algal aggregates were observed floating underneath various ice types in the Central Arctic basins. Our results show that the floe scale distribution of algal aggregates in late summer is very patchy and determined by the topography of the ice underside, with aggregates collecting in dome shaped structures and at the edges of pressure ridges. The buoyancy of the aggregates was also evident from analysis of the aggregate size distribution. Different approaches used to estimate aggregate biomass yield a wide range of results. This highlights that special care must be taken when upscaling observations and comparing results from surveys conducted using different methods or on different spatial scales.