Emerging Digital Transmitters for Wireless Communication From RF to mm-Wave
IEEE North Jersey Section AP/MTT Jt. Chapter Co-Sponsors the TALK: "RF Plasma Circuits and Antennas"
Emerging Digital Transmitters for Wireless Communication From RF to mm-Wave
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This presentation will begin by introducing the fundamentals of Digital Transmitters (DTX), focusing on the key architectures, specifically polar and quadrature DTX designs. We will delve into essential system-level design considerations, including aspects such as signal integrity, noise performance, and power efficiency, while also examining current performance trends in the industry. Following this introduction, the emphasis will shift to RF DTX architectures that prioritize deep back-off efficiency, which is crucial for managing power levels in high-performance applications. We will discuss strategies to enhance bandwidth and improve linearity, which are vital for maintaining signal quality in various communication systems. Through several detailed design examples, we will illustrate how these architectures can be effectively implemented.
In addition, the presentation will introduce mm-wave DTXs tailored for 5G Frequency Range 2 (FR2) and E-band wireless communication. We will explore techniques for achieving significant data rate enhancements while also addressing challenges related to local oscillator (LO) leakage suppression, a critical factor for minimizing interference and ensuring system reliability. Finally, we will examine the innovative architectures of digital phased-array transmitters (TXs) that support high-resolution and energy-efficient beam steering. We will discuss how these architectures facilitate advanced applications, such as adaptive beamforming and spatial multiplexing, which are essential for maximizing throughput and optimizing performance in next-generation wireless networks.
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Ajay Poddar (akpoddar@ieee.org), Edip Niver (edip.niver@njit.edu), (Anisha Apte (anisha_apte@ieee.org)
- Co-sponsored by IEEE North Jersey Section
Speakers
Huizhen Jenny Qian
Emerging Digital Transmitters for Wireless Communication From RF to mm-Wave
The growing demand for wireless communication systems that are highly integrated, cost-effective, multi-band, low in power consumption, and capable of delivering high data rates presents significant challenges in transmitter design. Advances in CMOS technology allow for direct bits-to-RF conversion, which enhances energy efficiency, reduces the number of stages and impedance matching requirements, and leads to a compact size. Additionally, this technology is highly reconfigurable and compatible with digital basebands, especially when compared to traditional analog transmitters. Various emerging digital transmitter (DTX) architectures and techniques have been developed for wireless communication, showcasing the advantages of multifunctionality, multi-mode operation, and efficiency improvements to accommodate high peak-to-average power ratio (PAPR) modulations and increased data rates. This presentation will cover DTX techniques that operate from RF to mm-wave frequencies, highlighting the continuous evolution of performance metrics, multifunctionality, and digital beamforming.
The presentation will introduce the fundamentals of DTX, including polar and quadrature DTX architectures, system-level design considerations, and performance trends. Then, it will focus on RF DTX architectures, emphasizing improvements in deep back-off efficiency, bandwidth, and linearity. Several design examples will be provided. Additionally, we will discuss mm-wave DTX systems for 5G FR2 and E-band wireless communication, focusing on enhancing data rates and suppressing local oscillator (LO) leakage. Furthermore, we will explore the architectures of digital phased array transmitters, which offer high-resolution and energy-efficient beam steering.
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