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The composition and the holographic behavior of a new photopolymer with high diffraction efficiencies (30% at 514 and 60% at 633 nm) are described.

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This paper presents the design and characterization of a 880-MHz class-E power amplifier (PA) designed to operate in a polar transmitter for EDGE signals. The amplifier is intended to be supplied from a 3.6 V battery using a linear amplifier as an envelope tracker, which limits the maximum drain voltage to 3.3 V. With a +7.6 dBm input signal the maximum output power (VDD = 3.3V) is +22.4 dBm with 14.9 dB of gain, a drain efficiency of 71.6% and PAE of 69%. An output power dynamic range of 15.4dB is achieved when the voltage is varied from 0.5-3.3V. Taking into account the statistics of an EDGE signal, the mean drain efficiency and PAE are 75.7% and 64.4%, with a mean output power of +18.26 dBm.

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