Towards generalized Doherty power amplifier design for multiband operation

This paper presents a new variant of broadband Doherty power amplifier that employs a novel output combiner. A new parameter ∝ is introduced to permit a generalized analysis of the recently reported Parallel Doherty power amplifier (PDPA),and hence offer design flexibility. The circuit prototype of the new DPA fabricated using GaN devices exhibits maximum drain efficiency of 85% at 43-dBm peak power and 63% at 6-dB backoff power (BOP). Measured drain efficiency of >60% at peak power across 500-MHz frequency range and >50% at 6-dB BOP across 480-MHz frequency range were achieved, confirming the  theoretical wideband characteristics of the new DPA.

Letter - Sean O'Sullivan to John G. Doherty, 28 April 1975

A letter from Sean O'Sullivan to John G. Doherty, editor of The Spectator, 28 April 1975. The letter includes comments from O'Sullivan regarding the direction of the Progressive Conservative Party.

Wrestling Card - Ken Kenneth

The wrestler's name is Ken Kenneth and the number stamped on the reverse is 119.

Letter to S.D. Woodruff from Kenneth Ross

Letter to S.D. Woodruff from Kenneth Ross suggesting a date that he would put in the switch at Thorold, Dec. 19, 1856.

Letter to Kenneth Ross [from S.D. Woodruff]

Letter to Kenneth Ross [from S.D. Woodruff] that the date suggested to put in the switch at Thorold is inconvenient and perhaps he could defer the action, Dec. 22, 1856.

Ethics at War: Review of Elizabeth Scannell-Desch and Mary Ellen Doherty, Nurses in War: Voices from Iraq and Afghanistan

Compte-rendu / Review

Science, gender and otherness in Shelley's Frankenstein and Kenneth Branagh's film adaptation

Questions of gender and genre in Frankenstein remain complex issues for contemporary critics, in the novel itself as well as in its cinematographic adaptations, from John Whale's classic 1931 version to Kenneth Branagh's 1994 "Mary Shelley's Frankenstein." Though science seems to be the unifying principle behind the main story of the novel and the films, I will argue that Shelley incorporates science and sexual orientation within her novel in a way that differs significantly from the films, and especially from Branagh's version.

Questioning Kenneth N. Waltz (1924-2013)

Two little-known academics examine the doctoral thesis of a young theorist, Kenneth Waltz. They conclude that his work is important, despite its ambiguities. Some years later, they catch up with Professor Waltz between classes and explore how his ideas have developed.