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Webinars
利用GaN扩展蜂窝无线基础设施的可能性

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日期: 2016年8月17日 15:00    

摘要:
GaN已经迅速发展成为促成一系列当前和未来系统的一种技术,但这也对pre-5G和5G网络应用带来了较大影响。Qorvo的Gary Burgin将要讨论GaN技术能够实现哪些功能和如何针对载波聚合扩展带宽;并研究GaN如何影响未来5G平台的部署。
作者:Gary Burgin,Qorvo无线基础设施部门产品应用工程师
演讲人:万文豪,Qorvo无线基础设施和国防产品大客户销售经理
作者简历:
Gary Burgin 于1993年获得印第安纳州拉法叶普渡大学工程技术学士学位,并在2007年获得明尼苏达州明尼阿波利斯瓦尔登大学电子工程硕士学位。1994至2007期间,他在摩托罗拉从事多个系统的功率放大器方面的工作,这些系统包括WiMAX、CDMA和iDEN平台。1999年至2000年期间,他在德克萨斯州欧文市的诺基亚从事GSM基站放大器的设计工作。2014年至2015年期间,他在德克萨斯州沃思堡市的美国埃尔比特公司从事用于军用通信的UHF/VHF功率放大器的设计工作。2007年,他加入了德克萨斯州理查德森的Qorvo (TriQuint) 公司,目前在这里担任产品应用工程师,从事功率放大器GaN Doherty技术方面的工作。

 

COMSOL中的天线仿真
日期: 2015年12月23日 14:00    播放/下载(Webex ARF格式)
简介:
工程师和设计人员经常需要借助多物理场仿真来设计及优化天线产品,以实现最优的产品性能。在本次研讨会中,我们将重点介绍如何进行各类RF应用的模拟,包括近场、远场以及阻抗计算。此外,我们还将现场演示偶极子天线建模过程,并展示它的辐射方向图,以及如何通过仿真模型建立仿真App,实现人人可用的模拟与仿真。本次网络研讨会包含问答环节。
演讲人:王海莉博士,COMSOL应用工程师
王海莉,2011年于中科院半导体研究所获博士学位。随后在华为从事光通信用半导体光学器件研究工作。2014年加入COMSOL,成为应用工程师。主要从事高频电磁场、光学、半导体等领域的技术支持和客户咨询。
播放/下载(Webex ARF格式)
Tips and Techniques for Making Microwave Vector Network Analysis Measurements in the Field
 
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简介:
In this webinar, participants will learn various tips and techniques for making microwave vector network analysis (VNA) measurements in the field. These include:
1.Understanding how to cope with the challenges of field based measurements (climate, ruggedness, ...)
2.Attaining correlation with lab measurements
3.Understanding when recalibration is needed ...

RF and Microwave Heating with COMSOL Multiphysics
 
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简介:
RF and microwave products are affected by interacting physics phenomena such as heat transfer and mechanical forces, which can influence electromagnetic properties. Multiphysics modeling can help you better optimize your designs to gain a competitive advantage. In this webinar, we will explain how to use COMSOL Multiphysics for simulating RF and microwave heating in living tissue, circuit boards, antennas and devices that contain both lossy dielectric and metallic domains. The presentation will include a live demonstration and a Q&A session.

Modern Trends in Broadband Diode Mixers: Can you have your cake and eat it too?
 
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Measurement of PIM Distortion in Microstrip Transmission Lines: Effect of Laminate Properties and Measurement Repeatability
 
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简介:

Understanding the factors contributing to the generation of passive intermodulation distortion in multi-frequency communication systems is a subject of interest to antenna designers. ?As telecommunications antennas are becoming more complicated, microstrip circuits made on copper clad laminates are replacing bent metal designs. PIM distortion is a circuit or system property, not a basic material property, and depends on the overall design, connectors, and local power densities, among many other factors. However, there are basic laminate properties that can contribute to PIM. In this seminar, we will discuss the measurement of PIM in microstrip transmission lines and the pertinent laminate properties, most notably conductor profile. We also discuss experiments on the effects of circuit processing, laminate thickness, and power level. Understanding small contributions to PIM ?is complicated by the very low power levels involved. We discuss the special attention that must be paid to the statistics of the measurement method.


Mixers & Frequency Conversion
 
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简介:

Frequency conversion is a critical function in all wireless systems. A key component used to accomplish this is the mixer. Designers need to understand different mixer topologies and specifications in order to meet their system requirements. This webinar provides a brief overview of frequency conversion and introduces the mixer as the component used to accomplish this function.

    • RF System Architectures
    • How many conversions?
    • How to Convert? What is a mixer figure of merit?
    • Passive diode mixers versus passive FET mixers
    • Monolithic silicon active mixer issues
    • Comparing Mixer Specifications
    • Design Overview

Practical Antenna Design for Advanced Wireless Products
 
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简介:

Antenna performance plays a critical role in determining the communication range and quality of service for wireless devices. As devices must increasingly support challenging spectral requirements (wideband or multi-band) and small product size, design becomes crucial to the success of new wireless products. Competence in advanced antenna design strengthens the competitive edge of such products for their manufacturers.

This webinar offers participants technical insights into the vital aspects of antenna design from an industrial and practical perspective. It covers fundamental theory, concepts and definitions of the features, specifications and performance of different types of commonly-used and advanced antennas found in wireless products. Practical implementation strategies and approaches to overall product design for optimum antenna performance will also be presented.

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