A 76-84 GHz SiGe power amplifier array employing low-loss four-way differential combining transformer

This paper presents holistic design of a novel four-way differential power-combining transformer for use in millimeter-wave power-amplifier (PA). The combiner with an inner radius of 25 µm exhibits a record low insertion loss of 1.25 dB at 83.5 GHz. It is designed to simultaneously act as a balanced-to-unbalanced converter, removing the need for additional BALUNs typically required in differential circuits. A complete circuit comprised of a power splitter, two-stage differential cascode PA array, a power combiner as well as input and output matching elements was designed and realized in SiGe technology with f/f 170/250 GHz. Measured small-signal gain of at least 16.8 dB was obtained from 76.4 to 85.3 GHz with a peak 19.5 dB at 83 GHz. The prototype delivered 12.5 dBm output referred 1 dB compression point and 14 dBm saturated output power when operated from a 3.2 V dc supply voltage at 78 GHz.

Arrêts du Grand Conseil en faveur des officiers commensaux de la maison du Roi et leurs femmes, pour les droits honorifiques dans l'église avant les marguilliers (des 14 février 1726 et 14 janvier 1727.)

[Acte. 1726-02-14. Paris]

Ala ciudad. Periódico de la Cámara de Comercio de Bogotá. Edición: 84

Gestión del conocimiento

Barnes Wines, Limited By-Law No. 84

The By-Law reads: "A By-Law to change the Qualification of a director of the Corporation. Be it enacted and is hereby enacted as a By-law of Barnes Wines, Limited that: - Whereas it is deemed expedient to change the qualifications of a Director of the Corporation; Be it therefore enacted as a By-law of Barnes Wines, Limited, as follows: That By-law no. 75 of the Corporation be and the same is hereby amended by striking out Paragraph 4 thereof. Enacted this 9th day of April, 1973. Witness the Corporate seal of the Corporation."