Design Note DN023 TI（设计注意DN023 TI）.pdfVIP

Design Note DN023 868 MHz, 915 MHz and 955 MHz Inverted F Antenna By Fredrik Kervel Keywords  CC10xx  CC11xL  CC110x  PCB Antenna  CC111x  868 MHz  CC112x  915 MHz  CC1150  955 MHz  CC1175  Inverted F Antenna  CC1100E  IFA 1 Introduction This document describes a PCB antenna a medium size, low cost antenna solution. designed for operation in the 868 MHz, Figure 1 shows a picture of the board 915 MHz and 955 MHz ISM bands. This being used to develop and characterize antenna can be used with all transceivers this antenna. The board is pin compatible and transmitters from Texas Instruments, with CC1110 EM and is equipped with two which operates in these frequency bands. LEDs, a push button, a 10-pin debug Maximum gain is measured to be connector and a 2-pin power connector for −0.12 dB and overall size requirements for test and characterization purpose. this antenna are 43 x 20 mm. Thus this is Figure 1. Prototype Board for 868 MHz, 915 MHz, and 955 MHz PCB Antenna SWRA228C Page 1 of 13 Design Note DN023 Table of Contents KEYWORDS 1 1 INTRODUCTION 1 2 ABBREVIATIONS 2 3 DESCRIPTION OF THE PCB ANTENNA 3 3.1 IMPLEMENTATION OF THE INVERTED F ANTENNA 3 4 RESULTS 5 4.1