CC2430微带非平衡电路设计及布线参考.pdfVIP

Design Note DN003 Implementation of Microstrip Balun for CC2420 and CC243x By Audun Andersen Keywords • Balun • Gerber • Microstrip • CC2420 • CADTtool • CC243x • DXF 1 Introduction To reduce the number of components and very dependent on the layout of the the cost, Texas Instruments offers a microstrip lines, it is important to make an microstrip balun applicable for CC2420 exact copy of the reference design. This and CC243x. This design transforms the design note presents all the dimensions of impedance of the differential signal at the the balun design to make implementation RF pins to a single ended 50 ohm signal easier. In addition, an alternative way of that can be connected to an antenna. copying the design by importing DXF or Since the performance of this design is Gerber files is described. SWRA098A Page 1 of 7 Design Note DN003 Table of Contents KEYWORDS 1 1 INTRODUCTION 1 2 ABBREVIATIONS 2 3 DESCRIPTION OF THE BALUN DESIGN 3 4 HOW TO COPY THE MICROSTRIP BALUN 3 4.1 MANUAL IMPLEMENTATION OF THE BALUN 3 4.2 USING DXF OR GERBER FILES TO IMPLEMENT THE BALUN 5 5 GENERAL INFORMATION 6 5.1 DOCUMENT HISTORY 6 6 IMPORTANT NOTICE 7 2 Abbreviations CAD Computer Aided Design DXF Data eXchange Format EM Evaluation Module TI