This paper presents an effective design methodology and flow, which is validated through three mmwave/sub-mm-wave amplifiers: including W-band LNA with NF=7dB, W-band PA with PAE >11% and D-band amplifier with gain>20dB. The CMOS based amplifiers can be integrated with III-V materials to form heterogeneous integration, such as COSMOS, to achieve the best performance for various applications.

i ABSTRACT Nowadays transducers are ubiquitous as interfaces between the increasingly digital world and the real physical world. The same holds for the power amplifiers driving them. This thesis focuses on the design and optimization of high-voltage class-D amplifiers, which are used for driving capacitive piezoelectric actuator loads in active vibration/noise control applications. The main obj...

Currently the multiple wireless data transmission technologies have been commercially implemented, such as long-term evolution (LTE), Wi-Fi, and Bluetooth. There is a keen requirement to combine the power amplifiers for those technologies into a single one which can amplifies concurrent multi-band signals. On the physically layer, there are two popular architectures, namely parallel single-band...

We describe the geometric and engineering design challenges that were overcome to create a new compact, 10-inch diameter spherical loudspeaker array with integrated class-D amplifiers and a 120 independent channel digital audio interface using Gigabit Ethernet. A special hybrid geometry is used that combines the maximal symmetry of a triangular-faceted icosahedron with the compact planar packin...

Relative intensity noise (RIN) induced penalties were experimentally measured in distributed Raman amplifiers (DRAs) for G.654.E and G.652.D fibres with forward, backward bidirectional pumping configurations. The signal RIN using the fibre was ∼3.5 dB ∼2 lower than forward (FW) pump configuration PM-QPSK PM-8QAM signals, single span transmission showing a Q-factor improvement of ∼3 ∼2.5 over fi...

L. W. Nagel, “SPICE2: A computer program to simulate semiconductor circuits,” Univ. of California Berkeley, Engineering Research Laboratory, UBCIERL-M520, 1975. Analog Devices Inc., “SPICE model library release E,” Norwood, MA, 1991. Comlinear Corp., “Simulation macromodels for Cornlinear current feedback amplifiers,” Applicat. Note OA-09, Fort Collins, CO, 1993. L. Smith and D. H. Sheingold, “...

The paper presents a combined power amplifier system consisting of a linear amplifier unit with a switched-mode (class D) current dumping stage arranged in parallel. With this topology the fundamental drawback of conventional linear power amplifiers the high loss is avoided. Compared to a pure class D (switching) amplifier the presented system needs no output filter to reduce the switching freq...

Class D power amplifiers, one of the most critical devices for application in sound systems, face severe challenges due to increasing requirement smartphones, digital television, sound, and other terminals. The audio amplifier has developed from a transistor field-effect tube amplifier, amplifiers have made significant progress circuit technology, components, ideological understanding. stumblin...