Search Results - "Zai, Andrew"

Supply-Modulated Radar Transmitters With Amplitude-Modulated Pulses by Zai, Andrew, Pinto, Mauricio, Coffey, Mike, Popovic, Zoya

“…This paper introduces an efficient radar transmitter with improved spectral confinement, enabled by a pulse waveform that contains both amplitude and frequency…”
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High Performance, 3D-Printable Dielectric Nanocomposites for Millimeter Wave Devices by Lis, Michael, Plaut, Maxwell, Zai, Andrew, Cipolle, David, Russo, John, Fedynyshyn, Theodore

“…The creation of millimeter wave, 3D-printable dielectric nanocomposite is demonstrated. Alumina nanoparticles were combined with styrenic block copolymers and…”
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Resonant Pulse-Shaping Power Supply for Radar Transmitters by Rodriguez, Miguel, Roberg, Michael, Zai, Andrew, Alarcon, Eduard, Popovic, Zoya, Maksimovic, Dragan

“…Typical radar transmitter signals are frequency-modulated with pulsed constant-amplitude envelopes in order to optimize radio-frequency power amplifier (RFPA)…”
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A 4.2-W 10-GHz GaN MMIC Doherty Power Amplifier by Coffey, Mike, MomenRoodaki, Parisa, Zai, Andrew, Popovic, Zoya

“…This paper describes the design and performance of an X-band GaN monolithic microwave integrated circuit (MMIC) Doherty power amplifier (DPA) in a 0.15 μm gate…”
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Polymer Dielectrics for 3D‐Printed RF Devices in the K a Band by Lis, Michael, Plaut, Maxwell, Zai, Andrew, Cipolle, David, Russo, John, Lewis, Jennifer, Fedynyshyn, Theodore

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Polymer Dielectrics for 3D‐Printed RF Devices in the Ka Band by Lis, Michael, Plaut, Maxwell, Zai, Andrew, Cipolle, David, Russo, John, Lewis, Jennifer, Fedynyshyn, Theodore

“…Direct‐write printing allows the fabrication of centimeter‐wave radio devices. Most polymer dielectric polymer materials become lossy at frequencies above 10…”
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High-efficiency X-band MMIC GaN power amplifiers with supply modulation by Zai, Andrew, Dongxue Li, Schafer, Scott, Popovic, Zoya

“…This paper presents measurement results on supply-modulated X-band 0.15μm gate width GaN HEMT MMIC power amplifiers for OFDM signals. Two PAs at 10GHz with 4…”
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Efficient power amplifiers for amplitude-tapered pulses with improved spectral confinement by Zai, Andrew, Florian, Corrado, Cappello, Tommaso, Popovic, Zoya

“…This paper reviews various techniques that allow efficient amplification of amplitude-modulated radar pulses through some type of supply modulation. Examples…”
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X-band MMIC GaN power amplifiers designed for high-efficiency supply-modulated transmitters by Schafer, Scott, Litchfield, Michael, Zai, Andrew, Popovic, Zoya, Campbell, Chuck

“…The design and measured performance of X-band power amplifier MMICs that utilize 0.15μm GaN on SiC process technology are presented. Under continuous wave…”
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Simulation and measurement-based X-parameter models for power amplifiers with envelope tracking by Haedong Jang, Zai, Andrew, Reveyrand, Tibault, Roblin, Patrick, Popovic, Zoya, Root, David E.

“…Static X-parameter (XP) models for RF power amplifiers (PAs), derived from both simulations and nonlinear vector network analyzer (NVNA) measurements, are…”
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Correction of frequency uncertainty in wide field of view interferometric angular velocity measurements by Nanzer, Jeffrey A., Zai, Andrew H.

“…This paper presents a method for correcting the frequency uncertainty encountered in interferometric angular velocity measurements. This new technique of…”
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RFPA supply modulator using wide-bandwidth linear amplifier with a GaN HEMT output stage by Dongxue Li, Rodriguez, Miguel, Zai, Andrew, Sardin, David, Maksimovic, Dragan, Popovic, Zoya

“…This paper presents an envelope tracking supply modulator for a high efficiency radiofrequency power amplifier (RFPA). A wide bandwidth linear amplifier using…”
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Effient Supply-Modulated Transmitters for Variable Amplitude Radar by Zai, Andrew H

“…This thesis introduces an efficient radar transmitter with improved spectral confinement, enabled by a pulse waveform that contains both amplitude and…”
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Shared Envelope Tracking for Time-Delayed Power Amplifiers in Phased Array Systems by Zai, Andrew, Kolodziej, Kenneth E., Lockard, Michael, Herd, Jeffrey S.

“…Analysis shows that multiple time-delayed power amplifiers can share a single envelope tracker and provide a significant improvement over statically supplied…”
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Effient Supply-Modulated Transmitters for Variable Amplitude Radar by Zai, Andrew H

“…This thesis introduces an efficient radar transmitter with improved spectral confinement, enabled by a pulse waveform that contains both amplitude and…”
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5G Summit Highlights Recent Microwave Hardware Developments by Zai, Andrew

“…Presents information on the 5G Summit meeting…”
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