20 a radio transceiver for a falls detection 10 pendant · feed point matching circuitry this...

20 10 School of Electrical Engineering &Telecommunications UNSW ENGINEERING @ UNSW 14 Author: Shane Ennis (3331667) Supervisor: Prof. Nigel Lovell Assessor: Dr. Stephen Redmond Co-supervisor: Dr. Torsten Lehmann A Radio Transceiver for a Falls Detection Pendant Abstract As life expectancy increases and the population continues to age, falls related injuries are becoming more prevalent. This thesis aims to provide a communication link between a low power falls detector being developed by the Graduate School of Biomedical Engineering at UNSW and the Grupo Neat NEO care phone. 3.Circuit Various matching network topologies such as Pi, T and L were simulated through the use of Smith V3.10. 1. Software A Texas Instruments CC1120 transceiver chip was utilised for the communications in conjunction with an MSP430. 2. Antenna Three different types of antennae were simulated using Comsol Multiphysics; Monopole, Patch, and Inverted-F. Inverted-F Antenna Patch Antenna Monopole Antenna gplane_w gplane_l Feed point Matching Circuitry This antenna design was chosen due to its compact size and directivity Full Circuit The circuit was designed using Altium Designer 13 and is derived from the CC1120 TI reference design. PCB Design A 3.43cm by 4.03cm 4 layer PCB of 1mm thickness with an immersion gold surface finish was designed. This design uses 0402 surface mount components.

Upload: others

Post on 19-Jul-2020

0 views

Category:

Documents

0 download

Report

Download

Embed Size (px):

TRANSCRIPT

Page 1: 20 A Radio Transceiver for a Falls Detection 10 Pendant · Feed point Matching Circuitry This antenna design was chosen due to its compact size and directivity Full Circuit The circuit

2010

School of Electrical Engineering &Telecom

munications

UNSW ENGINEERING @ UNSW

Author: Shane Ennis (3331667) Supervisor: Prof. Nigel Lovell

Assessor: Dr. Stephen Redmond Co-supervisor: Dr. Torsten Lehmann

A Radio Transceiver for a Falls Detection Pendant

Abstract As life expectancy increases and the population continues to age, falls related injuries are becoming more prevalent. This thesis aims to provide a communication link between a low power falls detector being developed by the Graduate School of Biomedical Engineering at UNSW and the Grupo Neat NEO care phone.

3.Circuit Various matching network topologies such as Pi, T and L were simulated through the use of Smith V3.10.

1. Software A Texas Instruments CC1120 transceiver chip was utilised for the communications in conjunction with an MSP430.

2. Antenna Three different types of antennae were simulated using Comsol Multiphysics; Monopole, Patch, and Inverted-F.

Inverted-F Antenna

Patch Antenna

Monopole Antenna

gplane_w

gplane_l

Feed point

Matching Circuitry

This antenna design was chosen due to its compact size and directivity

Full Circuit The circuit was designed using Altium Designer 13 and is derived from the CC1120 TI reference design.

PCB Design A 3.43cm by 4.03cm 4 layer PCB of 1mm thickness with an immersion gold surface finish was designed. This design uses 0402 surface mount components.

Electronic Circuitry

MAX406 DS · 2009. 7. 9. · Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

Specification MV Switchboard - Horizon Power medium voltage (MV) switchboard including circuit breakers, instrument transformers, protection relays, auxiliary equipment and circuitry

Sulfonamide Directivity Enables Ni-Catalyzed 1,2

MOLEX COPPER FLEXIBLE CIRCUIT SOLUTIONS€¦ · MOLEX COPPER FLEXIBLE CIRCUIT SOLUTIONS. INNOVATIVE COPPER FLEX CIRCUITS We are your total solution for flexible printed circuitry

1 Maximal directivity at audio frequenciesdattorro/ultra.pdf · 2016-02-13 · 1 Maximal directivity at audio frequencies Principal properties of directivity for speaker arrays: 1)

Source and Listener Directivity for Interactive Wave-based Sound …gamma.cs.unc.edu/DIRECTIVITY/docs/paper.pdf · 2014-01-29 · Source and Listener Directivity for Interactive Wave-based

Using Directivity Genetic Algorithms to Geometry Search

OVERIWMATRLSERFI - WordPress.com · 6) Demonstrate their understanding of basic circuitry through the design of their circuit. CIRCUIT - a closed path that electric current flows

integrated circuit - Idea2IC circuit.pdf · integrated circuitry integrated circuitry n. integrated circuit View more Technology videos ... Some integrated circuits can be considered

· 2D Directivity Analysis 1500 1800 1200 EQUIPSON'A . 6300Hz 10000Hz 12500Hz 160ÖÖHz 270 240' 2D Directivity Analysis 330' 120' 150' 2100 180' 3150HZ 4000Hz 270 2400 20 Directivity

MAX16150 - Maxim Integrated · Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit