Homepage - RF Cafe
Webmaster: Kirt Blattenberger | KB3UON | Sitemap | ©1996-2014     Visit RF Cafe on
      Menu below is just a small sample of what is here!          Visit RF Cafe on Facebook Visit RF Cafe on Twitter Visit RF Cafe on LinkedIn
Custom Search
More than 10,000 searchable pages indexed.
•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<

Chips for a Direct Sequence Spread Spectrum transmitter ? - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


RF Head
Post subject: Chips for a Direct Sequence Spread Spectrum transmitter ? Posted: Fri Feb 13, 2009 6:50 am

Captain

Joined: Mon Feb 09, 2009 12:26 pm
Posts: 11
Looking for parts to implement a Direct Sequence Spread Spectrum transmitter. Ideally a single-chip solution would be nice. Not sure about frequency or chip rates etc yet. Just looking for some parts to start with.

Steve


Top

Jessica
Post subject: Re: Chips for a Direct Sequence Spread Spectrum transmitter ?Posted: Thu May 14, 2009 11:45 am

Lieutenant


Joined: Thu Oct 12, 2006 7:50 am
Posts: 2
Try looking at Cypress Semiconductor. They have a line of 2.4 GHz ICs for FHSS and DSSS.

http://www.cypress.com/?rID=34487

2.4 GHz CyFi™ Transceiver

Features

2.4 GHz Direct Sequence Spread Spectrum (DSSS) Radio Transceiver
Operates in the unlicensed worldwide Industrial, Scientific, and Medical (ISM) band (2.400 GHz to 2.483 GHz)
21 mA Operating Current (Transmit at -5 dBm)
Transmit Power Up to 4 dBm
Receive Sensitivity up to -97 dBm
Sleep Current less than 1 µA
DSSS Data Rates up to 250 kbps, GFSK Data Rate of 1 Mbps
Low External Component Count
Auto Transaction Sequencer (ATS) - no MCU intervention
For more, see pdf

Functional Overview

The CYRF7936 IC is designed to implement wireless device links operating in the worldwide 2.4 GHz ISM frequency band. It is intended for systems compliant with worldwide regulations covered by ETSI EN 301 489-1 V1.41, ETSI EN 300 328-1 V1.3.1 (Europe), FCC CFR 47 Part 15 (USA and Industry Canada), and TELEC ARIB_T66_March, 2003 (Japan).

The CYRF7936 contains a 2.4 GHz CyFi radio modem which features a 1 Mbps GFSK radio front-end, packet data buffering, packet framer, DSSS baseband controller, and Received Signal Strength Indication (RSSI). CYRF7936 features a SPI interface for data transfer and device configuration.

_________________
Thanks,
Jess







Posted  11/12/2012
A Disruptive Web Presence

Custom Search
Over 10,000 pages indexed! (none duped or pirated)

Read About RF Cafe
Webmaster: Kirt Blattenberger
    KB3UON

RF Cafe Software

RF Cascade Workbook
RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

RF & EE Symbols Word
RF Stencils for Visio

Product & Service Directory
Personally Selected Manufacturers
RF Cafe T-Shirts & Mugs

RF Cafe Software

Calculator Workbook
RF Workbench
Smith Chart™ for Visio
Smith Chart™ for Excel
Your RF Cafe Progenitor & Webmaster
Click here to read about RF CafeKirt Blattenberger... single-handedly redefining what an
                                 engineering website should be.

View the YouTube RF Cafe Intro Video Carpe Diem! (Seize the Day!)

5CCG (5th MOB): My USAF radar shop

Airplanes and Rockets: My personal hobby website

Equine Kingdom: My daughter Sally's horse riding website