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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. https://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
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