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[[Category:radio]]  | |||
''un ricev(trasmett)itore HF cosi piccolo da poterlo custodire comodamente tra le fauci''  | |||
* piccolo  | * piccolo  | ||
* economico  | * economico  | ||
* a basso consumo (<100ma)  | * a basso consumo (<100ma rx)  | ||
* a bassa tensione (3.3v)  | * a bassa tensione (3.3v o 5v)  | ||
== VFO ==  | |||
Basta un [[Ondeggiatore]]!  | |||
===   | === Quadratura ===  | ||
[http://www.ti.com/product/sn74lvc74a sn74lvc74a] 1.65 V to 3.6 V, tpd of 5.2 ns at 3.3 V  | |||
== Demodulatore ==  | |||
Basta un [[Laterizio]]!  | |||
== Mixer ==  | |||
=== Gilbert-cell ===  | |||
Una cella di gilbert implementata con un array di bipolari: regge piu di un mosfet dual-gate e consuma meno di un ring di diodi  | |||
*   | HFA3101 http://www.intersil.com/en/products/amplifiers-and-buffers/transistor-arrays/transistor-arrays---gilbert-cell-uhf/HFA3101.html  | ||
*   | |||
** http://www.  | === DGMOS ===  | ||
**   | |||
http://sm0vpo.com/blocks/mixers-1.htm  | |||
*   | |||
** http://www.  | ma sembrano introvabili a 3.3  | ||
** http://martein.home.xs4all.nl/pa3ake/hmode/  | |||
*   | === Commutativi ===  | ||
**   | |||
**   | * http://www.oe1ira.at/sl/mix.html  | ||
* http://www.phonestack.com/farhan/mixermusings.pdf  | |||
** http://www.  | * http://g4oep.atspace.com/mixers/notes_on_the_basic_operation_of_.htm  | ||
occhio al bias!  | |||
* http://www.m0rjd.co.uk/bus-switches.html  | |||
* http://www.spinelectronics.eu/ftp/SDR/IK1ODO_SDR1.html  | |||
==== Topologie ====  | |||
===== Subarmonic =====  | |||
* Polyakov [https://soldersmoke.blogspot.com/2010/03/polyakovs-russian-mixer.html 1], [https://www.qsl.net/pa2ohh/11qrx.htm 2]  | |||
===== QSD =====  | |||
* http://www.waves.utoronto.ca/prof/svhum/ece422/sdr/qsd.html  | |||
* http://kc.flexradio.com/KnowledgebaseArticle50193.aspx SDR1000  | |||
* http://martein.home.xs4all.nl/pa3ake/hmode/IF_detector_qsd.html  | |||
* http://www.itsrainingelephants.com/blog-archives/tag/adg704/   | |||
* http://www.m0nka.co.uk/wp-content/uploads/2016/03/rx_mixer.pdf  | |||
* http://www.m0rzf.co.uk/resources/QSD.pdf  | |||
===== H-mode =====  | |||
ma uscire in audio da un trasformatore e' grigia  | |||
* http://g4oep.atspace.com/mixers/notes_on_the_basic_operation_of_.htm#The%20QRSS%20Mixer. questo ha l'uscita audio  | |||
* http://martein.home.xs4all.nl/pa3ake/hmode/fsav430.html ma l'fsav430 pare semiintrovabile  | |||
* http://www.qsl.net/g3oou/solidstatecircuits9.html con due SPDT  | |||
* magari in versione 2T   | |||
** http://martein.home.xs4all.nl/pa3ake/hmode/2t-hmode.html  | |||
** http://www.arifidenza.it/forum/topic.asp?TOPIC_ID=81490  | |||
===== Bilanciati =====  | |||
# http://home.snafu.de/graff/sbt40.pdf rf splittata a condensatori, LO split a porte logiche  | |||
# http://yu1lm.qrpradio.com/HF%20SDR%20RECEIVER%20CW-SSB-DRM%20YU1LM.pdf   | |||
#* RF sbilanciata  | |||
#* LO + !LO  | |||
#* OUT bilanciato  | |||
#* si puo reimplementare con un singolo SPDT  | |||
# http://www.qrp.pops.net/K7LR-Memorial.asp   | |||
#* RF bilanciata (a trasformatore)  | |||
#* un dual spst  | |||
#* OUT sbilanciato  | |||
#* simile a https://lz3nf.wordpress.com/2013/07/25/280/  | |||
===   | ==== Componenti ====  | ||
* [http://www.ti.com/product/ts3a4751 ts3a4751] 0.9 Ohm Low-Voltage Single-Supply Quad SPST Analog Switch tON = 14 ns, tOFF = 9 ns  | |||
* http://www.analog.com/en/switchesmultiplexers/analog-switches/adg711/products/product.html  | |||
* Dual 2:1  | |||
** [http://www.ti.com/product/ts5a623157 ts5a623157] 10-Ohm, With Undershoot/Overshoot Voltage Protection  | |||
** [http://www.ti.com/product/ts5a23159 ts5a23159] 1-Ohm, Break-Before-Make, 5V/3.3V, Ton 8ns, Toff 5ns  | |||
** [https://www.ti.com/product/TS3A24159 TS3A24159] 0.3-Ω, Break-Before-Make, 1.65-V to 3.6-V, Ton 20ns, Toff 12ns  | |||
* Quad 2:1  | |||
** [http://www.ti.com/product/SN74CBT3257 SN74CBT3257] 4 poli 2 vie, 500Mhz, 4-5.5v, 4Ω   | |||
*** [https://ftp.elecraft.com/K3S/Manuals%20Downloads/E740323%20K3s%20Schematic%20Files.pdf K3S]    | |||
*** [https://ftp.elecraft.com/KX2/Manuals%20Downloads/E740324%20KX2%20Schematic%20Files%20RevA.pdf KX2] ne usa due in RX, ognuno RF in bilanciato, out bilanciato  | |||
*** [https://ftp.elecraft.com/KX3/Manuals%20Downloads/KX3SchematicDiagramDec2012.pdf KX3] ne usa due   | |||
** SN74CB3Q3257 versione a 3.3v, 500Mhz, 4Ω, con pompa di carica (potenzialmente rumorosa)  | |||
** SN74CBTLV3257 bw 200 mhz, 5Ω, senza pompe di carica  | |||
* Dual 1:4  | |||
** [http://www.ti.com/lit/pdf/scds018 SN74CBT3253] usato da [http://www.telepostinc.com/LP-PAN2-Manual.pdf LP-PAN2]  | |||
** [http://www.onsemi.com/PowerSolutions/product.do?id=FST3253 FST3253] usato da [http://fivedash.com/resource/RXTXEnsembleSchematic.pdf softrock] (uscita sbilanciata), [http://qrp-labs.com/receiver qrplabs], [http://www.jumaradio.com/juma-trx2/ JUMA-TRX2] (entrata bilanciata e uscita bilanciata) e [https://ftp.elecraft.com/KX2/Manuals%20Downloads/E740324%20KX2%20Schematic%20Files%20RevA.pdf KX2] (in TX) Esistono anche [http://www.ti.com/product/sn74cbt3253 sn74cbt3253] 5v, 200mhz, 5Ω e [http://www.ti.com/product/sn74cbtlv3253 sn74cbtlv3253] 3.3, 200mhz, 5Ω  | |||
** http://www.ti.com/product/TS3A5017/description, 165mhz, 11Ω  | |||
** [http://www.mouser.com/ds/2/149/FSAV331-112579.pdf FSAV331] usato in [https://martein.home.xs4all.nl/pa3ake/hmode/IF_detector.html pa3ake IF_detector board] e PI5V331 o [https://www.idt.com/document/dst/qs4a210-datasheet QS4A210] in [http://www.arrl.org/files/file/Technology/tis/info/pdf/030304qex020.pdf SDR-1000]  (BAL-BAL)  | |||
* http://www.analog.com/en/switchesmultiplexers/multiplexers-muxes/adg704/products/product.html SP4T, 2.5 Ω, +1.8 V to +5.5 V  | |||
== Diplexer ==  | |||
sul diplexer che segue il mixer si gioca buona parte della dinamica del ricevitore  | sul diplexer che segue il mixer si gioca buona parte della dinamica del ricevitore  | ||
| Line 47: | Line 110: | ||
http://www.qrp.pops.net/dip2.asp  | http://www.qrp.pops.net/dip2.asp  | ||
* http://www.qrp.pops.net/dip_sup.asp  | |||
* http://www.tuberadio.com/new.html  | |||
* http://www.vk6fh.com./vk6fh/DIPLEXER%201.htm  | |||
* http://www.robkalmeijer.nl/techniek/electronica/radiotechniek/hambladen/radcom/1991/04/page39/  | |||
* http://www.qsl.net/g3oou/mixerterminations.html  | |||
* http://www.seboldt.net/k0jd/r2pamp.txt  | |||
== Filtri RF ==  | |||
set di filtri passa banda LC commutabili (<5W)  | |||
* http://www.gqrp.com/technical2.htm  | |||
* http://martein.home.xs4all.nl/pa3ake/hmode/bpf_intro.html  | |||
== Commutazione LP e PA ==  | |||
i sistemi di commutazione praticabili sono:  | |||
=== meccanico ===  | |||
* commutatore meccanico: problemi di cablaggio e di contatti  | |||
* microrelays DIP: consumano abbastanza e hanno problemi di contatto (a meno di non implementare il 'DC wetting', non sembrano esistere per 3.3v  | |||
===   | === stato solido ===  | ||
* http://www.psemi.com/products/rf-switches  | |||
* diodi PIN: consumano molto, non sembrano esistere per 3.3v  | |||
* FET discreti:  | |||
** http://www.n5ese.com/tr_switch.htm  | |||
** ci sono pochi FET con Vgth < 3.3v che lavorino bene ad alta frequenza:  | |||
*** http://www.st.com/web/catalog/sense_power/FM100/CL824/SC1164/PF253858  | |||
* Bus/Analog Switch: hanno una Ron non indifferente, non reggono segnali molto forti, lavorano malino a 3.3v  | |||
** http://www.m0rjd.co.uk/bus-switches.html  | |||
** http://martein.home.xs4all.nl/pa3ake/hmode/IF_switches.html  | |||
** https://w3jdr.wordpress.com/fst3253-bus-switch-as-an-rf-switch/  | |||
** http://www.ti.com/general/docs/lit/getliterature.tsp?baseLiteratureNumber=slyb125  | |||
** http://www.ti.com/product/ts3a4751 0.9-Ω LOW-VOLTAGE SINGLE-SUPPLY QUAD SPST ANALOG SWITCH  | |||
** http://www.maximintegrated.com/datasheet/index.mvp/id/3351 MAX4734 0.8Ω, Low-Voltage, 4-Channel Analog Multiplexer  | |||
* Amp Buffer integrati  | |||
** Una via (solo rx)  | |||
** ABA32563 http://www.avagotech.com/pages/en/rf_ics_discretes/rf_ics/silicon_amplifiers_gain_blocks/aba-32563/ reperibili a poco, bevono 37ma  | |||
letture:  | |||
* http://www.skyworksinc.com/downloads/press_room/published_articles/MPD_062009.pdf  | |||
* http://www.skyworksinc.com/downloads/press_room/published_articles/MPD_052009.pdf  | |||
* http://www.m0rzf.co.uk/softrock7/  | |||
== Amplificatore audio ==  | |||
=== Preamp e filtro LP ===  | |||
*   | * bilanciato  | ||
** http://www.ti.com/product/ths4532 Dual, Ultra low power 0.25mA, RRO, fully differential amplifier  | |||
* sbilanciato  | |||
** LVM772 http://www.ti.com/product/lmv772  | |||
** [http://www.ti.com/product/tl974 TL974] oppure [http://www.st.com/content/st_com/en/products/amplifiers-and-comparators/operational-amplifiers-op-amps/automotive-op-amps/ts972.html ts974] low noise 4nV/√Hz - 2.7-10v  | |||
** OPA365 http://www.ti.com/product/opa365  2.2V, 50MHz, Low-Noise, Single-Supply Rail-to-Rail Operational Amplifier  | |||
** ADA4692-2 http://www.analog.com/en/all-operational-amplifiers-op-amps/operational-amplifiers-op-amps/ada4692-2/products/product.html  Low Power, Wideband, Low Noise, Rail-to-Rail Output, Dual Op Amp  | |||
===  | === PA ===  | ||
* TPA2005D1 https://focus.ti.com/docs/prod/folders/print/tpa2005d1-q1.html  | |||
* LM4667 http://www.ti.com/product/lm4667  | |||
* SSM2305 http://www.analog.com/en/audiovideo-products/audio-amplifiers/ssm2305/products/product.html  | |||
== PA RF ==  | |||
* RD06HVF1  | |||
* RD02LUS2 470MHz,2W  | |||
* [http://www.st.com/content/st_com/en/products/radio-frequency-transistors/rf-ldmos-transistors/7v-rf-ldmos-hf-to-2ghz/pd54008-e.html PD54008] 8 W with 11.5dB gain @ 500 MHz/7.5 V  | |||
==  | == LDO ==  | ||
*   | * http://www.st.com/content/st_com/en/products/power-management/linear-voltage-regulators/low-dropout-ldo-linear-regulators/ld2985.html 280 mV at 150 mA and 7 mV at 1 mA, inhibit function  | ||
==  | == Layout ==  | ||
=== Baseband ===  | |||
* mic preamp & lowpass  | |||
* lowpass & audio pa  | |||
* [[Laterizio]]  | |||
===   | === LO & Mix ===  | ||
* LO [[Ondeggiatore]]  | |||
* 90' squarer  | |||
* QSD/E  | |||
=== Frontend ===  | |||
*   | * PA RF  | ||
*   | * band filter  | ||
*   | * RX attenuator  | ||
*   | * T/R switch  | ||
Latest revision as of 13:29, 19 June 2019
un ricev(trasmett)itore HF cosi piccolo da poterlo custodire comodamente tra le fauci
- piccolo
 - economico
 - a basso consumo (<100ma rx)
 - a bassa tensione (3.3v o 5v)
 
VFO
Basta un Ondeggiatore!
Quadratura
sn74lvc74a 1.65 V to 3.6 V, tpd of 5.2 ns at 3.3 V
Demodulatore
Basta un Laterizio!
Mixer
Gilbert-cell
Una cella di gilbert implementata con un array di bipolari: regge piu di un mosfet dual-gate e consuma meno di un ring di diodi
DGMOS
http://sm0vpo.com/blocks/mixers-1.htm
ma sembrano introvabili a 3.3
Commutativi
- http://www.oe1ira.at/sl/mix.html
 - http://www.phonestack.com/farhan/mixermusings.pdf
 - http://g4oep.atspace.com/mixers/notes_on_the_basic_operation_of_.htm
 
occhio al bias!
Topologie
Subarmonic
QSD
- http://www.waves.utoronto.ca/prof/svhum/ece422/sdr/qsd.html
 - http://kc.flexradio.com/KnowledgebaseArticle50193.aspx SDR1000
 - http://martein.home.xs4all.nl/pa3ake/hmode/IF_detector_qsd.html
 - http://www.itsrainingelephants.com/blog-archives/tag/adg704/
 - http://www.m0nka.co.uk/wp-content/uploads/2016/03/rx_mixer.pdf
 - http://www.m0rzf.co.uk/resources/QSD.pdf
 
H-mode
ma uscire in audio da un trasformatore e' grigia
- http://g4oep.atspace.com/mixers/notes_on_the_basic_operation_of_.htm#The%20QRSS%20Mixer. questo ha l'uscita audio
 - http://martein.home.xs4all.nl/pa3ake/hmode/fsav430.html ma l'fsav430 pare semiintrovabile
 - http://www.qsl.net/g3oou/solidstatecircuits9.html con due SPDT
 - magari in versione 2T
 
Bilanciati
- http://home.snafu.de/graff/sbt40.pdf rf splittata a condensatori, LO split a porte logiche
 - http://yu1lm.qrpradio.com/HF%20SDR%20RECEIVER%20CW-SSB-DRM%20YU1LM.pdf
- RF sbilanciata
 - LO + !LO
 - OUT bilanciato
 - si puo reimplementare con un singolo SPDT
 
 - http://www.qrp.pops.net/K7LR-Memorial.asp
- RF bilanciata (a trasformatore)
 - un dual spst
 - OUT sbilanciato
 - simile a https://lz3nf.wordpress.com/2013/07/25/280/
 
 
Componenti
- ts3a4751 0.9 Ohm Low-Voltage Single-Supply Quad SPST Analog Switch tON = 14 ns, tOFF = 9 ns
 - http://www.analog.com/en/switchesmultiplexers/analog-switches/adg711/products/product.html
 - Dual 2:1
- ts5a623157 10-Ohm, With Undershoot/Overshoot Voltage Protection
 - ts5a23159 1-Ohm, Break-Before-Make, 5V/3.3V, Ton 8ns, Toff 5ns
 - TS3A24159 0.3-Ω, Break-Before-Make, 1.65-V to 3.6-V, Ton 20ns, Toff 12ns
 
 - Quad 2:1
- SN74CBT3257 4 poli 2 vie, 500Mhz, 4-5.5v, 4Ω
 - SN74CB3Q3257 versione a 3.3v, 500Mhz, 4Ω, con pompa di carica (potenzialmente rumorosa)
 - SN74CBTLV3257 bw 200 mhz, 5Ω, senza pompe di carica
 
 - Dual 1:4
- SN74CBT3253 usato da LP-PAN2
 - FST3253 usato da softrock (uscita sbilanciata), qrplabs, JUMA-TRX2 (entrata bilanciata e uscita bilanciata) e KX2 (in TX) Esistono anche sn74cbt3253 5v, 200mhz, 5Ω e sn74cbtlv3253 3.3, 200mhz, 5Ω
 - http://www.ti.com/product/TS3A5017/description, 165mhz, 11Ω
 - FSAV331 usato in pa3ake IF_detector board e PI5V331 o QS4A210 in SDR-1000 (BAL-BAL)
 
 - http://www.analog.com/en/switchesmultiplexers/multiplexers-muxes/adg704/products/product.html SP4T, 2.5 Ω, +1.8 V to +5.5 V
 
Diplexer
sul diplexer che segue il mixer si gioca buona parte della dinamica del ricevitore
http://www.qrp.pops.net/dip2.asp
- http://www.qrp.pops.net/dip_sup.asp
 - http://www.tuberadio.com/new.html
 - http://www.vk6fh.com./vk6fh/DIPLEXER%201.htm
 - http://www.robkalmeijer.nl/techniek/electronica/radiotechniek/hambladen/radcom/1991/04/page39/
 - http://www.qsl.net/g3oou/mixerterminations.html
 - http://www.seboldt.net/k0jd/r2pamp.txt
 
Filtri RF
set di filtri passa banda LC commutabili (<5W)
Commutazione LP e PA
i sistemi di commutazione praticabili sono:
meccanico
- commutatore meccanico: problemi di cablaggio e di contatti
 - microrelays DIP: consumano abbastanza e hanno problemi di contatto (a meno di non implementare il 'DC wetting', non sembrano esistere per 3.3v
 
stato solido
- http://www.psemi.com/products/rf-switches
 - diodi PIN: consumano molto, non sembrano esistere per 3.3v
 - FET discreti:
- http://www.n5ese.com/tr_switch.htm
 - ci sono pochi FET con Vgth < 3.3v che lavorino bene ad alta frequenza:
 
 - Bus/Analog Switch: hanno una Ron non indifferente, non reggono segnali molto forti, lavorano malino a 3.3v
- http://www.m0rjd.co.uk/bus-switches.html
 - http://martein.home.xs4all.nl/pa3ake/hmode/IF_switches.html
 - https://w3jdr.wordpress.com/fst3253-bus-switch-as-an-rf-switch/
 - http://www.ti.com/general/docs/lit/getliterature.tsp?baseLiteratureNumber=slyb125
 - http://www.ti.com/product/ts3a4751 0.9-Ω LOW-VOLTAGE SINGLE-SUPPLY QUAD SPST ANALOG SWITCH
 - http://www.maximintegrated.com/datasheet/index.mvp/id/3351 MAX4734 0.8Ω, Low-Voltage, 4-Channel Analog Multiplexer
 
 - Amp Buffer integrati
- Una via (solo rx)
 - ABA32563 http://www.avagotech.com/pages/en/rf_ics_discretes/rf_ics/silicon_amplifiers_gain_blocks/aba-32563/ reperibili a poco, bevono 37ma
 
 
letture:
- http://www.skyworksinc.com/downloads/press_room/published_articles/MPD_062009.pdf
 - http://www.skyworksinc.com/downloads/press_room/published_articles/MPD_052009.pdf
 - http://www.m0rzf.co.uk/softrock7/
 
Amplificatore audio
Preamp e filtro LP
- bilanciato
- http://www.ti.com/product/ths4532 Dual, Ultra low power 0.25mA, RRO, fully differential amplifier
 
 - sbilanciato
- LVM772 http://www.ti.com/product/lmv772
 - TL974 oppure ts974 low noise 4nV/√Hz - 2.7-10v
 - OPA365 http://www.ti.com/product/opa365 2.2V, 50MHz, Low-Noise, Single-Supply Rail-to-Rail Operational Amplifier
 - ADA4692-2 http://www.analog.com/en/all-operational-amplifiers-op-amps/operational-amplifiers-op-amps/ada4692-2/products/product.html Low Power, Wideband, Low Noise, Rail-to-Rail Output, Dual Op Amp
 
 
PA
- TPA2005D1 https://focus.ti.com/docs/prod/folders/print/tpa2005d1-q1.html
 - LM4667 http://www.ti.com/product/lm4667
 - SSM2305 http://www.analog.com/en/audiovideo-products/audio-amplifiers/ssm2305/products/product.html
 
PA RF
- RD06HVF1
 - RD02LUS2 470MHz,2W
 - PD54008 8 W with 11.5dB gain @ 500 MHz/7.5 V
 
LDO
- http://www.st.com/content/st_com/en/products/power-management/linear-voltage-regulators/low-dropout-ldo-linear-regulators/ld2985.html 280 mV at 150 mA and 7 mV at 1 mA, inhibit function
 
Layout
Baseband
- mic preamp & lowpass
 - lowpass & audio pa
 - Laterizio
 
LO & Mix
- LO Ondeggiatore
 - 90' squarer
 - QSD/E
 
Frontend
- PA RF
 - band filter
 - RX attenuator
 - T/R switch