Multiple switchable input LNA with input impedance control

An amplifier circuit has an amplifying transistor which is switched on and off by a switching transistor under control of a control signal selectively applied to the switching transistor. In this way a selection is made whether or not to amplify an input signal on an antenna. The switching transisto...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: OBERHAMMER, WOLFGANG
Format: Patent
Sprache:eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator OBERHAMMER
WOLFGANG
description An amplifier circuit has an amplifying transistor which is switched on and off by a switching transistor under control of a control signal selectively applied to the switching transistor. In this way a selection is made whether or not to amplify an input signal on an antenna. The switching transistor forms part of the biasing circuit for the amplifying transistor such that when the switching transistor is on the amplifying transistor is biased off. A PIN diode and series resistor are together connected in shunt across the switching transistor such that the bias voltage which causes the amplifying transistor to be off causes the PIN diode to be forward biased thereby causing the antenna to be terminated with the resistor the value of which may be chosen to be 50 ohms.
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_US5914634A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>US5914634A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_US5914634A3</originalsourceid><addsrcrecordid>eNrjZLDyLc0pySzISVUoLs8sSc5ITAIyM_MKSksUfPwcFYBiGVBuZm5BakpiXnKqQnJ-XklRfg4PA2taYk5xKi-U5maQd3MNcfbQTS3Ij08tLkhMTs1LLYkPDTa1NDQxMzZxNCasAgDMiS57</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Multiple switchable input LNA with input impedance control</title><source>esp@cenet</source><creator>OBERHAMMER; WOLFGANG</creator><creatorcontrib>OBERHAMMER; WOLFGANG</creatorcontrib><description>An amplifier circuit has an amplifying transistor which is switched on and off by a switching transistor under control of a control signal selectively applied to the switching transistor. In this way a selection is made whether or not to amplify an input signal on an antenna. The switching transistor forms part of the biasing circuit for the amplifying transistor such that when the switching transistor is on the amplifying transistor is biased off. A PIN diode and series resistor are together connected in shunt across the switching transistor such that the bias voltage which causes the amplifying transistor to be off causes the PIN diode to be forward biased thereby causing the antenna to be terminated with the resistor the value of which may be chosen to be 50 ohms.</description><edition>6</edition><language>eng</language><subject>AMPLIFIERS ; BASIC ELECTRONIC CIRCUITRY ; ELECTRICITY</subject><creationdate>1999</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19990622&amp;DB=EPODOC&amp;CC=US&amp;NR=5914634A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25551,76302</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19990622&amp;DB=EPODOC&amp;CC=US&amp;NR=5914634A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>OBERHAMMER; WOLFGANG</creatorcontrib><title>Multiple switchable input LNA with input impedance control</title><description>An amplifier circuit has an amplifying transistor which is switched on and off by a switching transistor under control of a control signal selectively applied to the switching transistor. In this way a selection is made whether or not to amplify an input signal on an antenna. The switching transistor forms part of the biasing circuit for the amplifying transistor such that when the switching transistor is on the amplifying transistor is biased off. A PIN diode and series resistor are together connected in shunt across the switching transistor such that the bias voltage which causes the amplifying transistor to be off causes the PIN diode to be forward biased thereby causing the antenna to be terminated with the resistor the value of which may be chosen to be 50 ohms.</description><subject>AMPLIFIERS</subject><subject>BASIC ELECTRONIC CIRCUITRY</subject><subject>ELECTRICITY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1999</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLDyLc0pySzISVUoLs8sSc5ITAIyM_MKSksUfPwcFYBiGVBuZm5BakpiXnKqQnJ-XklRfg4PA2taYk5xKi-U5maQd3MNcfbQTS3Ij08tLkhMTs1LLYkPDTa1NDQxMzZxNCasAgDMiS57</recordid><startdate>19990622</startdate><enddate>19990622</enddate><creator>OBERHAMMER; WOLFGANG</creator><scope>EVB</scope></search><sort><creationdate>19990622</creationdate><title>Multiple switchable input LNA with input impedance control</title><author>OBERHAMMER; WOLFGANG</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US5914634A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1999</creationdate><topic>AMPLIFIERS</topic><topic>BASIC ELECTRONIC CIRCUITRY</topic><topic>ELECTRICITY</topic><toplevel>online_resources</toplevel><creatorcontrib>OBERHAMMER; WOLFGANG</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>OBERHAMMER; WOLFGANG</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Multiple switchable input LNA with input impedance control</title><date>1999-06-22</date><risdate>1999</risdate><abstract>An amplifier circuit has an amplifying transistor which is switched on and off by a switching transistor under control of a control signal selectively applied to the switching transistor. In this way a selection is made whether or not to amplify an input signal on an antenna. The switching transistor forms part of the biasing circuit for the amplifying transistor such that when the switching transistor is on the amplifying transistor is biased off. A PIN diode and series resistor are together connected in shunt across the switching transistor such that the bias voltage which causes the amplifying transistor to be off causes the PIN diode to be forward biased thereby causing the antenna to be terminated with the resistor the value of which may be chosen to be 50 ohms.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language eng
recordid cdi_epo_espacenet_US5914634A
source esp@cenet
subjects AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
title Multiple switchable input LNA with input impedance control
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-15T13%3A41%3A45IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=OBERHAMMER;%20WOLFGANG&rft.date=1999-06-22&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EUS5914634A%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true