Software Defined Radio - Revision history

R4002 at 17:59, 18 May 2023

2023-05-18T17:59:20Z

← Older revision		Revision as of 17:59, 18 May 2023
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-	''Not to be confused with very low power SRD Short Range Devices [[SRD860\|or]] SRDs - the European version of [[Part 15]] intentional radiators.''	+	''Not to be confused with very low power [[SRD]] Short Range Devices [[SRD860\|or]] SRDs - the European version of [[Part 15]] intentional radiators.''

	A '''software defined radio''', or '''SDR''', is a radio transmitter or receiver where some functions tradionally performed with RF and IF circuits (e.g. mixers, filters and, especially, modulators/demodulators and detectors) are instead implemented in software running on an associated desktop computer or on an embedded computing device.<sup>(1)</sup> While the concept of SDR is not new, the rapidly evolving capabilities of digital electronics render practical many processes which used to be only theoretically possible.		A '''software defined radio''', or '''SDR''', is a radio transmitter or receiver where some functions tradionally performed with RF and IF circuits (e.g. mixers, filters and, especially, modulators/demodulators and detectors) are instead implemented in software running on an associated desktop computer or on an embedded computing device.<sup>(1)</sup> While the concept of SDR is not new, the rapidly evolving capabilities of digital electronics render practical many processes which used to be only theoretically possible.

R4002 at 00:42, 5 June 2021

2021-06-05T00:42:31Z

← Older revision		Revision as of 00:42, 5 June 2021
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-	''Not to be confused with very low power Short Range Devices or SRDs - the European version of [[Part 15]] intentional radiators.''	+	''Not to be confused with very low power SRD Short Range Devices [[SRD860\|or]] SRDs - the European version of [[Part 15]] intentional radiators.''

	A '''software defined radio''', or '''SDR''', is a radio transmitter or receiver where some functions tradionally performed with RF and IF circuits (e.g. mixers, filters and, especially, modulators/demodulators and detectors) are instead implemented in software running on an associated desktop computer or on an embedded computing device.<sup>(1)</sup> While the concept of SDR is not new, the rapidly evolving capabilities of digital electronics render practical many processes which used to be only theoretically possible.		A '''software defined radio''', or '''SDR''', is a radio transmitter or receiver where some functions tradionally performed with RF and IF circuits (e.g. mixers, filters and, especially, modulators/demodulators and detectors) are instead implemented in software running on an associated desktop computer or on an embedded computing device.<sup>(1)</sup> While the concept of SDR is not new, the rapidly evolving capabilities of digital electronics render practical many processes which used to be only theoretically possible.

R4002 at 00:40, 5 June 2021

2021-06-05T00:40:29Z

← Older revision		Revision as of 00:40, 5 June 2021
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		+	''Not to be confused with very low power Short Range Devices or SRDs - the European version of [[Part 15]] intentional radiators.''
		+
	A '''software defined radio''', or '''SDR''', is a radio transmitter or receiver where some functions tradionally performed with RF and IF circuits (e.g. mixers, filters and, especially, modulators/demodulators and detectors) are instead implemented in software running on an associated desktop computer or on an embedded computing device.<sup>(1)</sup> While the concept of SDR is not new, the rapidly evolving capabilities of digital electronics render practical many processes which used to be only theoretically possible.		A '''software defined radio''', or '''SDR''', is a radio transmitter or receiver where some functions tradionally performed with RF and IF circuits (e.g. mixers, filters and, especially, modulators/demodulators and detectors) are instead implemented in software running on an associated desktop computer or on an embedded computing device.<sup>(1)</sup> While the concept of SDR is not new, the rapidly evolving capabilities of digital electronics render practical many processes which used to be only theoretically possible.

Ka3jjz: /* Usage */

2020-08-19T21:08:01Z

Usage

← Older revision		Revision as of 21:08, 19 August 2020
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	Software radios are used in military applications, including [[VHF / UHF Radio\|VHF and UHF tactical radios]], in cellular phones, in GPS receivers and are becoming very common in [[amateur radio]] and [[SWL\|shortwave listening]] stations. In the long term it is expected that software-defined shall become the dominant technology in radio communications.		Software radios are used in military applications, including [[VHF / UHF Radio\|VHF and UHF tactical radios]], in cellular phones, in GPS receivers and are becoming very common in [[amateur radio]] and [[SWL\|shortwave listening]] stations. In the long term it is expected that software-defined shall become the dominant technology in radio communications.
		+
		+	You can find an extensive listing of SDRs for numerous applications [https://wiki.radioreference.com/index.php/Software_Defined_Radios here]

	==References==		==References==
	# Markus Dillinger, Kambiz Madani, Nancy Alonistioti: "Software Defined Radio: Architectures, Systems and Functions", Wiley & Sons, 2003, ISBN 0-470-85164-3.		# Markus Dillinger, Kambiz Madani, Nancy Alonistioti: "Software Defined Radio: Architectures, Systems and Functions", Wiley & Sons, 2003, ISBN 0-470-85164-3.

R4002: /* Usage */

2018-12-12T14:46:55Z

Usage

← Older revision		Revision as of 14:46, 12 December 2018
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	==Usage==		==Usage==

-	Software radios are used in military applications, in cellular phones, in GPS receivers and are becoming very common in [[amateur radio]] and [[SWL\|shortwave listening]] stations. In the long term it is expected that software-defined shall become the dominant technology in radio communications.	+	Software radios are used in military applications, including [[VHF / UHF Radio\|VHF and UHF tactical radios]], in cellular phones, in GPS receivers and are becoming very common in [[amateur radio]] and [[SWL\|shortwave listening]] stations. In the long term it is expected that software-defined shall become the dominant technology in radio communications.

	==References==		==References==
	# Markus Dillinger, Kambiz Madani, Nancy Alonistioti: "Software Defined Radio: Architectures, Systems and Functions", Wiley & Sons, 2003, ISBN 0-470-85164-3.		# Markus Dillinger, Kambiz Madani, Nancy Alonistioti: "Software Defined Radio: Architectures, Systems and Functions", Wiley & Sons, 2003, ISBN 0-470-85164-3.

R4002: /* Usage */

2018-12-12T14:46:24Z

Usage

← Older revision		Revision as of 14:46, 12 December 2018
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	==Usage==		==Usage==

-	Software radios are used in military applications, in cellular phones, in GPS receivers and are ~~becomig~~ very common in [[amateur radio]] and [[SWL\|shortwave listening]] stations. In the long term it is expected that software-defined shall become the dominant technology in radio communications.	+	Software radios are used in military applications, in cellular phones, in GPS receivers and are becoming very common in [[amateur radio]] and [[SWL\|shortwave listening]] stations. In the long term it is expected that software-defined shall become the dominant technology in radio communications.

	==References==		==References==
	# Markus Dillinger, Kambiz Madani, Nancy Alonistioti: "Software Defined Radio: Architectures, Systems and Functions", Wiley & Sons, 2003, ISBN 0-470-85164-3.		# Markus Dillinger, Kambiz Madani, Nancy Alonistioti: "Software Defined Radio: Architectures, Systems and Functions", Wiley & Sons, 2003, ISBN 0-470-85164-3.

Strange Attractor: /* SDR technology */

2011-06-04T07:14:10Z

SDR technology

← Older revision		Revision as of 07:14, 4 June 2011
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	==SDR technology==		==SDR technology==

-	A basic SDR receiver consists of a personal computer equipped with a sound card, ~~preceded~~ an RF front end which converts radio frequency signals to a frequency range which the sound card can sample and process. Normally two low frequency streams, sampled with local oscillators operating with a 90<sup>0</sup> phase difeerence, are produced. These are usually called the I and the Q signals. The sound card implements the final stages of signal filtering. Most important, having both I and Q signals fed to the sound card, it is possible to implement an almost endless variety of detectors and demodulators in software.	+	A basic SDR receiver consists of a personal computer equipped with a sound card, preceeded by an RF front end which converts radio frequency signals to a frequency range which the sound card can sample and process. Normally two low frequency streams, sampled with local oscillators operating with a 90<sup>0</sup> phase difeerence, are produced. These are usually called the I and the Q signals. The sound card implements the final stages of signal filtering. Most important, having both I and Q signals fed to the sound card, it is possible to implement an almost endless variety of detectors and demodulators in software.

	More advanced SDR receivers, like [[Perseus\|Perseus SDR]] from Microtelecom, include a high speed sampler (analog-to-digital converter) and send digitized I and Q signals to the computer using a fast digital link, like USB of firewire.		More advanced SDR receivers, like [[Perseus\|Perseus SDR]] from Microtelecom, include a high speed sampler (analog-to-digital converter) and send digitized I and Q signals to the computer using a fast digital link, like USB of firewire.

Strange Attractor: /* SDR technology */

2011-06-04T07:12:43Z

SDR technology

← Older revision		Revision as of 07:12, 4 June 2011
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	A basic SDR receiver consists of a personal computer equipped with a sound card, preceded an RF front end which converts radio frequency signals to a frequency range which the sound card can sample and process. Normally two low frequency streams, sampled with local oscillators operating with a 90<sup>0</sup> phase difeerence, are produced. These are usually called the I and the Q signals. The sound card implements the final stages of signal filtering. Most important, having both I and Q signals fed to the sound card, it is possible to implement an almost endless variety of detectors and demodulators in software.		A basic SDR receiver consists of a personal computer equipped with a sound card, preceded an RF front end which converts radio frequency signals to a frequency range which the sound card can sample and process. Normally two low frequency streams, sampled with local oscillators operating with a 90<sup>0</sup> phase difeerence, are produced. These are usually called the I and the Q signals. The sound card implements the final stages of signal filtering. Most important, having both I and Q signals fed to the sound card, it is possible to implement an almost endless variety of detectors and demodulators in software.

-	More advanced SDR receivers, like [[Perseus SDR]] from Microtelecom, include a high speed sampler (analog-to-digital converter) and send digitized I and Q signals to the computer using a fast digital link, like USB of firewire.	+	More advanced SDR receivers, like [[Perseus\|Perseus SDR]] from Microtelecom, include a high speed sampler (analog-to-digital converter) and send digitized I and Q signals to the computer using a fast digital link, like USB of firewire.

	==Usage==		==Usage==

Strange Attractor: Created page with "A '''software defined radio''', or '''SDR''', is a radio transmitter or receiver where some functions tradionally performed with RF and IF circuits (e.g. mixers, filters and, esp..."

2011-06-04T07:12:11Z

Created page with "A '''software defined radio''', or '''SDR''', is a radio transmitter or receiver where some functions tradionally performed with RF and IF circuits (e.g. mixers, filters and, esp..."

New page

A '''software defined radio''', or '''SDR''', is a radio transmitter or receiver where some functions tradionally performed with RF and IF circuits (e.g. mixers, filters and, especially, modulators/demodulators and detectors) are instead implemented in software running on an associated desktop computer or on an embedded computing device.<sup>(1)</sup> While the concept of SDR is not new, the rapidly evolving capabilities of digital electronics render practical many processes which used to be only theoretically possible.

==SDR technology==

A basic SDR receiver consists of a personal computer equipped with a sound card, preceded an RF front end which converts radio frequency signals to a frequency range which the sound card can sample and process. Normally two low frequency streams, sampled with local oscillators operating with a 90<sup>0</sup> phase difeerence, are produced. These are usually called the I and the Q signals. The sound card implements the final stages of signal filtering. Most important, having both I and Q signals fed to the sound card, it is possible to implement an almost endless variety of detectors and demodulators in software.

More advanced SDR receivers, like [[Perseus SDR]] from Microtelecom, include a high speed sampler (analog-to-digital converter) and send digitized I and Q signals to the computer using a fast digital link, like USB of firewire.

==Usage==

Software radios are used in military applications, in cellular phones, in GPS receivers and are becomig very common in [[amateur radio]] and [[SWL|shortwave listening]] stations. In the long term it is expected that software-defined shall become the dominant technology in radio communications.

==References==
# Markus Dillinger, Kambiz Madani, Nancy Alonistioti: "Software Defined Radio: Architectures, Systems and Functions", Wiley & Sons, 2003, ISBN 0-470-85164-3.