WO1997041642A1 - Dispositif a combineurs emetteurs - Google Patents

Dispositif a combineurs emetteurs Download PDF

Info

Publication number
WO1997041642A1
WO1997041642A1 PCT/SE1997/000497 SE9700497W WO9741642A1 WO 1997041642 A1 WO1997041642 A1 WO 1997041642A1 SE 9700497 W SE9700497 W SE 9700497W WO 9741642 A1 WO9741642 A1 WO 9741642A1
Authority
WO
WIPO (PCT)
Prior art keywords
single carrier
transmitter
carrier power
power amplifier
amplifier
Prior art date
Application number
PCT/SE1997/000497
Other languages
English (en)
Inventor
Torbjörn JOHNSON
Jens Malmgren
Original Assignee
Radio Design Innovation Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Radio Design Innovation Ab filed Critical Radio Design Innovation Ab
Priority to EP97914741A priority Critical patent/EP0956648A1/fr
Priority to AU21875/97A priority patent/AU2187597A/en
Priority to JP9538777A priority patent/JP2000509229A/ja
Publication of WO1997041642A1 publication Critical patent/WO1997041642A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0483—Transmitters with multiple parallel paths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0277—Selecting one or more amplifiers from a plurality of amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0088—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using discontinuously variable devices, e.g. switch-operated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/72—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • H03F2203/7239—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal the gated amplifier being switched on or off by putting into parallel or not, by choosing between amplifiers and shunting lines by one or more switch(es)

Definitions

  • the present invention relates to a transmitter combiner arrangement, and more specifically a transmitter combiner arrangement usable in a base station of a multilobe telecom- munication system having phased array antennas.
  • the invention is not limited to such a system, but is very use ⁇ ful with systems having a large dynamic range, e.g. up to 110 dB or more.
  • the transmitter arrangement according to the invention enables amplification of low and high levels with high efficiency by means of a hybride arrangement combining efficient single carrier power amplifiers (SCPA) and high power multicarrier power amplifiers (MCPA) .
  • SCPA single carrier power amplifier
  • MCPA high power multicarrier power amplifiers
  • the multicarrier power amplifier is a known amplifying circuit having high power but low efficiency.
  • the advantage of this circuit is that it may accomodate many channels.
  • the present invention provides a transmitter combiner arrangement comprising a hybride of progressively coupled single carrier power amplifiers and a multicarrier power amplifier connected with a combiner network.
  • Figure 1 is a block diagram of a first embodiment of the invention including progressively coupled single carrier power amplifiers and a multicarrier power amplifier con ⁇ nected by a combiner network;
  • Figure 2 is a block diagram of another embodiment of the invention in which single carrier power amplifiers are connected by a filter bank;
  • Figure 3 is a block diagram of a further embodiment- of the invention in which single carrier power amplifiers are connected by the filter bank and a 3 dB combiner;
  • Figure 4A is a block diagram of a preferred embodiment of a single carrier power amplifier according to the inven- tion.
  • Figure 4B is a block diagram of a possible implementa ⁇ tion of a single carrier power amplifier.
  • the transmitter combiner arrangement according to the present invention is suitable for use in communication systems that transmit signals with a wide dynamic range.
  • the power is distributed to many radiating elements, and in order to obtain low sidelobe levels, the power sent to the different radiating elements may vary 30 dB .
  • the base station includes a lobe-shaping unit for con ⁇ trolling the signals to the phased array antenna.
  • a base station controller in turn controls the base stations of the telecommunication system.
  • the lobe-shaping unit and the base station controller do not form any parts of the present in- vention.
  • the transmitter arrangement includes a number of SCPAs connected by transmitter combiner circuits WILKD3DB, which may be of the conventional Wilkin- son 3dB type, in a step arrangement having equal attenuation steps.
  • WILKD3DB transmitter combiner circuits
  • the top SCPA will be able to furnish the lowest output power.
  • the SCPAs In front of the SCPAs are variable attenuators WA.
  • the inputs to the various SCPAs are arranged according to the input level or power requirement, such that the correct output power is obtained at the. output.
  • At the top transmitter combiner is a further expansion input for additional low power channels.
  • the transmitter arrangement also comprises a multi- carrier power amplifier.
  • a combiner network In front of the MCPAs is a combiner network, which may consist of transmitter combiners or a resistive combiner network.
  • the combiner network is pre ⁇ ferably symmetrical, such that the gain through the ampli ⁇ bombs is the same independent of input port.
  • the MCPA is suitable for amplifying many low levels since these will not generate important intermodulation products.
  • the SCPAs and the MCPA are combined in a final trans ⁇ mitter combiner.
  • the control unit controls the various amplifier units of the SCPAs and the MCPA by pro- viding the correct input voltage and input currents, i.e. the bias of the amplifier units. Thus the efficiency of the amplifiers can be optimised.
  • the control unit also receives input information from a base site controller and a lobe- shaping unit, if the transmitter combiner arrangement according to the invention forms part of such a telecommu ⁇ nication system.
  • FIG 2 is shown another embodiment of the present invention.
  • the SCPAs are connected by a filter bank to the final transmitter combinex.
  • the filters of the filter bank are connected by ⁇ /4 and ⁇ /2 transmission lines to the combiner for correct addition at the combiner.
  • FIG 3 is shown an embodiment of the invention featuring only SCPAs combined with filters. This embodiment is useful when it is desired to amplify many similar high level signals. It is especially advantageous with a pre ⁇ ferred embodiment of a single carrier power amplifier according to the present invention as described below with reference to Figures 4A and B.
  • Figure 4A is shown an especially advantageous form of a single carrier power amplifier having variable power and amplification levels.
  • the amplifier comprises a number of amplifier units AMP which may be en ⁇ abled by setting a corresponding number of switches.
  • the amplifier unit at the far left can only output low signal levels.
  • the middle amplifier is also enabled as it can supply medium output " levels.
  • the amplifier unit at the far right is enabled being able to supply high output levels.
  • the middle or right-hand amplifiers are disabled, their biases are turned off so that the power consumption is considerably reduced and the signal is by ⁇ passed.
  • the efficiency of the amplifier is maintained fairly independent of the output signal level.
  • the amplifier arrangement achieves 60 dB gain control. This is achieved by varying the bias of the amplifiers.
  • a voltage variable attenuator WA is used to fine tune the gain.
  • Figure 4B shows a possible implementation of the amplifier circuit including switchable PIN diodes and ⁇ /4 transmission lines MTRL.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)

Abstract

L'invention concerne un dispositif à combineurs émetteurs et plus spécifiquement un dispositif de combineurs émetteurs utilisable dans des systèmes de communications émettant des signaux dans une dynamique étendue, par exemple dans une station de base d'un système de télécommunications multilobe comprenant des antennes réseau à commande de phase. Le dispositif émetteur selon l'invention permet l'amplification de haut et bas niveaux avec grande efficacité au moyen d'un montage différentiel comprenant un différentiel constitué d'amplificateurs de puissance à une seule porteuse, couplés progressivement et d'un amplificateur de puissance à plusieurs porteuses connecté à un réseau de combineurs.
PCT/SE1997/000497 1996-04-29 1997-03-24 Dispositif a combineurs emetteurs WO1997041642A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP97914741A EP0956648A1 (fr) 1996-04-29 1997-03-24 Dispositif a combineurs emetteurs
AU21875/97A AU2187597A (en) 1996-04-29 1997-03-24 Transmitter combiner arrangement
JP9538777A JP2000509229A (ja) 1996-04-29 1997-03-24 送信機結合器配置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9601619A SE9601619L (sv) 1996-04-29 1996-04-29 Anordning med sändarkombinerare
SE9601619-1 1996-04-29

Publications (1)

Publication Number Publication Date
WO1997041642A1 true WO1997041642A1 (fr) 1997-11-06

Family

ID=20402375

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1997/000497 WO1997041642A1 (fr) 1996-04-29 1997-03-24 Dispositif a combineurs emetteurs

Country Status (5)

Country Link
EP (1) EP0956648A1 (fr)
JP (1) JP2000509229A (fr)
AU (1) AU2187597A (fr)
SE (1) SE9601619L (fr)
WO (1) WO1997041642A1 (fr)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933879A2 (fr) * 1998-02-03 1999-08-04 Rohde & Schwarz GmbH & Co. KG Emetteur radiofréquence
WO1999046854A1 (fr) * 1998-03-12 1999-09-16 Sentel Corporation Amplificateur combineur lineaire en peigne (clac)
EP0961402A2 (fr) * 1998-05-27 1999-12-01 Nokia Mobile Phones Ltd. Un émetteur
EP0977354A1 (fr) * 1998-02-19 2000-02-02 Ntt Mobile Communications Network Inc. Amplificateur pour radiotransmission
EP0987817A1 (fr) * 1998-09-16 2000-03-22 Lucent Technologies Inc. Méthode et dispositif pour augmenter l'efficacité d'un amplificateur de puissance linéaire
EP0998033A1 (fr) * 1998-05-14 2000-05-03 Mitsubishi Denki Kabushiki Kaisha Circuit a semi-conducteur
EP1100147A2 (fr) * 1999-11-10 2001-05-16 Lucent Technologies Inc. Système d'amplificateur de puissance pour un système d' antenne
WO2001043469A1 (fr) * 1999-12-10 2001-06-14 Nokia Corporation Systeme d'antenne
WO2001056171A2 (fr) * 2000-01-25 2001-08-02 Paradigm Wireless Communications, Llc Ensemble commutateur dote d'un commutateur multipolaire servant a combiner des signaux rf amplifies avec un signal rf unique
WO2001059923A2 (fr) * 2000-02-08 2001-08-16 Wireless Systems International Limited Agencement d'amplification
EP1182786A1 (fr) * 2000-08-21 2002-02-27 Lucent Technologies Inc. Dispositif de transmission et de réception pour stations de base
FR2816132A1 (fr) * 2000-10-31 2002-05-03 Agence Spatiale Europeenne Dispositif reconfigurable pour amplifier des signaux rf
WO2002052723A2 (fr) * 2000-12-22 2002-07-04 The Johns Hopkins University Amplificateur de puissance a semiconducteurs haute efficacite
WO2003063370A1 (fr) * 2002-01-25 2003-07-31 Siemens Aktiengesellschaft Procede et dispositif permettant de generer un signal porteur multiple haute frequence
EP1425851A1 (fr) * 2001-08-17 2004-06-09 Harris Corporation Systeme amplificateur large bande a linearite amelioree et perte minimale
US7647030B2 (en) 2004-10-22 2010-01-12 Parkervision, Inc. Multiple input single output (MISO) amplifier with circuit branch output tracking
US7747231B2 (en) 2005-06-29 2010-06-29 Samsung Electronics Co., Ltd. System and method for transmitting signal in a communication system
US8913691B2 (en) 2006-08-24 2014-12-16 Parkervision, Inc. Controlling output power of multiple-input single-output (MISO) device
US9094085B2 (en) 2005-10-24 2015-07-28 Parkervision, Inc. Control of MISO node
US9106316B2 (en) 2005-10-24 2015-08-11 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification
US9106500B2 (en) 2006-04-24 2015-08-11 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for error correction
US9166528B2 (en) 2004-10-22 2015-10-20 Parkervision, Inc. RF power transmission, modulation, and amplification embodiments
US9419692B2 (en) 2005-10-24 2016-08-16 Parkervision, Inc. Antenna control
US9608677B2 (en) 2005-10-24 2017-03-28 Parker Vision, Inc Systems and methods of RF power transmission, modulation, and amplification
US9614484B2 (en) 2005-10-24 2017-04-04 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including control functions to transition an output of a MISO device
US10278131B2 (en) 2013-09-17 2019-04-30 Parkervision, Inc. Method, apparatus and system for rendering an information bearing function of time

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004054370B3 (de) * 2004-11-10 2006-04-20 Siemens Ag Anordnung zum Anschalten von zumindest einer Sendeeinheit an eine Sende-Empfangsantenne

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735289A (en) * 1971-11-26 1973-05-22 Collins Radio Comp Transmitter combiner having coupled tuned circuits
EP0395239A1 (fr) * 1989-04-24 1990-10-31 Hughes Aircraft Company Système de commande du faiseau d'antenne
EP0462699A2 (fr) * 1990-06-16 1991-12-27 British Aerospace Public Limited Company Réseau d'antennes à commande de phase avec réutilisation de fréquences pour réception de deux signaux recherchés ou plus de même fréquence avec suppression de leur interférence croisée
US5113192A (en) * 1991-05-03 1992-05-12 Conoco Inc. Method for using seismic data acquisition technology for acquisition of ground penetrating radar data
US5257415A (en) * 1991-03-20 1993-10-26 Fujitsu Limited Automatic transmission level control device
EP0665657A2 (fr) * 1994-01-29 1995-08-02 Motorola Ltd Amplificateur de puissance pour émetteur radio et radio à distance foncionnant en dual mode
EP0735668A1 (fr) * 1995-03-30 1996-10-02 AT&T IPM Corp. Amplificateur de puissance configurable pour une unité portative
WO1996036105A1 (fr) * 1995-05-12 1996-11-14 Fujitsu Compound Semiconductor, Inc. Circuit amplificateur a multiples niveau de puissance et a grand rendement

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735289A (en) * 1971-11-26 1973-05-22 Collins Radio Comp Transmitter combiner having coupled tuned circuits
EP0395239A1 (fr) * 1989-04-24 1990-10-31 Hughes Aircraft Company Système de commande du faiseau d'antenne
EP0462699A2 (fr) * 1990-06-16 1991-12-27 British Aerospace Public Limited Company Réseau d'antennes à commande de phase avec réutilisation de fréquences pour réception de deux signaux recherchés ou plus de même fréquence avec suppression de leur interférence croisée
US5257415A (en) * 1991-03-20 1993-10-26 Fujitsu Limited Automatic transmission level control device
US5113192A (en) * 1991-05-03 1992-05-12 Conoco Inc. Method for using seismic data acquisition technology for acquisition of ground penetrating radar data
EP0665657A2 (fr) * 1994-01-29 1995-08-02 Motorola Ltd Amplificateur de puissance pour émetteur radio et radio à distance foncionnant en dual mode
EP0735668A1 (fr) * 1995-03-30 1996-10-02 AT&T IPM Corp. Amplificateur de puissance configurable pour une unité portative
WO1996036105A1 (fr) * 1995-05-12 1996-11-14 Fujitsu Compound Semiconductor, Inc. Circuit amplificateur a multiples niveau de puissance et a grand rendement

Cited By (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933879A2 (fr) * 1998-02-03 1999-08-04 Rohde & Schwarz GmbH & Co. KG Emetteur radiofréquence
EP0933879A3 (fr) * 1998-02-03 2000-06-07 Rohde & Schwarz GmbH & Co. KG Emetteur radiofréquence
EP0977354A1 (fr) * 1998-02-19 2000-02-02 Ntt Mobile Communications Network Inc. Amplificateur pour radiotransmission
US6265935B1 (en) 1998-02-19 2001-07-24 Ntt Mobile Communications Network Inc. Amplifier for radio transmission
EP0977354A4 (fr) * 1998-02-19 2001-03-07 Nippon Telegraph & Telephone Amplificateur pour radiotransmission
US6211732B1 (en) 1998-03-12 2001-04-03 Sentel Corporation Comb linear amplifier combiner (CLAC)
WO1999046854A1 (fr) * 1998-03-12 1999-09-16 Sentel Corporation Amplificateur combineur lineaire en peigne (clac)
EP0998033A4 (fr) * 1998-05-14 2004-07-07 Mitsubishi Electric Corp Circuit a semi-conducteur
EP0998033A1 (fr) * 1998-05-14 2000-05-03 Mitsubishi Denki Kabushiki Kaisha Circuit a semi-conducteur
US6563883B1 (en) 1998-05-27 2003-05-13 Nokia Mobile Phones Limited Transmitter
EP0961402A3 (fr) * 1998-05-27 2001-01-03 Nokia Mobile Phones Ltd. Un émetteur
EP0961402A2 (fr) * 1998-05-27 1999-12-01 Nokia Mobile Phones Ltd. Un émetteur
EP0987817A1 (fr) * 1998-09-16 2000-03-22 Lucent Technologies Inc. Méthode et dispositif pour augmenter l'efficacité d'un amplificateur de puissance linéaire
US6418304B1 (en) 1998-09-16 2002-07-09 Lucent Technologies Inc. Method and apparatus for improving efficiency of high-power linear amplifier
EP1100147A3 (fr) * 1999-11-10 2003-11-26 Lucent Technologies Inc. Système d'amplificateur de puissance pour un système d' antenne
EP1100147A2 (fr) * 1999-11-10 2001-05-16 Lucent Technologies Inc. Système d'amplificateur de puissance pour un système d' antenne
JP2007116745A (ja) * 1999-11-10 2007-05-10 Lucent Technol Inc 電力増幅器システム
KR100767885B1 (ko) * 1999-11-10 2007-10-17 루센트 테크놀러지스 인크 전력 증폭기 시스템, 안테나 시스템 및 신호 전송 방법
US7019710B1 (en) 1999-12-10 2006-03-28 Nokia Corporation Antenna system
WO2001043469A1 (fr) * 1999-12-10 2001-06-14 Nokia Corporation Systeme d'antenne
WO2001056171A3 (fr) * 2000-01-25 2002-04-11 Paradigm Wireless Communicatio Ensemble commutateur dote d'un commutateur multipolaire servant a combiner des signaux rf amplifies avec un signal rf unique
WO2001056171A2 (fr) * 2000-01-25 2001-08-02 Paradigm Wireless Communications, Llc Ensemble commutateur dote d'un commutateur multipolaire servant a combiner des signaux rf amplifies avec un signal rf unique
US6587014B2 (en) 2000-01-25 2003-07-01 Paradigm Wireless Communications Llc Switch assembly with a multi-pole switch for combining amplified RF signals to a single RF signal
WO2001059923A2 (fr) * 2000-02-08 2001-08-16 Wireless Systems International Limited Agencement d'amplification
US6819171B2 (en) 2000-02-08 2004-11-16 Andrew Corporation Amplifier arrangement
WO2001059923A3 (fr) * 2000-02-08 2002-03-14 Wireless Systems Int Ltd Agencement d'amplification
EP1182786A1 (fr) * 2000-08-21 2002-02-27 Lucent Technologies Inc. Dispositif de transmission et de réception pour stations de base
FR2816132A1 (fr) * 2000-10-31 2002-05-03 Agence Spatiale Europeenne Dispositif reconfigurable pour amplifier des signaux rf
WO2002052723A3 (fr) * 2000-12-22 2004-02-26 Univ Johns Hopkins Amplificateur de puissance a semiconducteurs haute efficacite
WO2002052723A2 (fr) * 2000-12-22 2002-07-04 The Johns Hopkins University Amplificateur de puissance a semiconducteurs haute efficacite
EP1425851A1 (fr) * 2001-08-17 2004-06-09 Harris Corporation Systeme amplificateur large bande a linearite amelioree et perte minimale
EP1425851A4 (fr) * 2001-08-17 2005-01-19 Harris Corp Systeme amplificateur large bande a linearite amelioree et perte minimale
WO2003063370A1 (fr) * 2002-01-25 2003-07-31 Siemens Aktiengesellschaft Procede et dispositif permettant de generer un signal porteur multiple haute frequence
US9143088B2 (en) 2004-10-22 2015-09-22 Parkervision, Inc. Control modules
US7647030B2 (en) 2004-10-22 2010-01-12 Parkervision, Inc. Multiple input single output (MISO) amplifier with circuit branch output tracking
US7945224B2 (en) 2004-10-22 2011-05-17 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including waveform distortion compensation embodiments
US9768733B2 (en) 2004-10-22 2017-09-19 Parker Vision, Inc. Multiple input single output device with vector signal and bias signal inputs
US8913974B2 (en) 2004-10-22 2014-12-16 Parkervision, Inc. RF power transmission, modulation, and amplification, including direct cartesian 2-branch embodiments
US9197163B2 (en) 2004-10-22 2015-11-24 Parkvision, Inc. Systems, and methods of RF power transmission, modulation, and amplification, including embodiments for output stage protection
US9197164B2 (en) 2004-10-22 2015-11-24 Parkervision, Inc. RF power transmission, modulation, and amplification, including direct cartesian 2-branch embodiments
US9166528B2 (en) 2004-10-22 2015-10-20 Parkervision, Inc. RF power transmission, modulation, and amplification embodiments
US7747231B2 (en) 2005-06-29 2010-06-29 Samsung Electronics Co., Ltd. System and method for transmitting signal in a communication system
US9106316B2 (en) 2005-10-24 2015-08-11 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification
US9094085B2 (en) 2005-10-24 2015-07-28 Parkervision, Inc. Control of MISO node
US9419692B2 (en) 2005-10-24 2016-08-16 Parkervision, Inc. Antenna control
US9608677B2 (en) 2005-10-24 2017-03-28 Parker Vision, Inc Systems and methods of RF power transmission, modulation, and amplification
US9614484B2 (en) 2005-10-24 2017-04-04 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including control functions to transition an output of a MISO device
US9705540B2 (en) 2005-10-24 2017-07-11 Parker Vision, Inc. Control of MISO node
US9106500B2 (en) 2006-04-24 2015-08-11 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for error correction
US8913691B2 (en) 2006-08-24 2014-12-16 Parkervision, Inc. Controlling output power of multiple-input single-output (MISO) device
US10278131B2 (en) 2013-09-17 2019-04-30 Parkervision, Inc. Method, apparatus and system for rendering an information bearing function of time

Also Published As

Publication number Publication date
SE9601619D0 (sv) 1996-04-29
AU2187597A (en) 1997-11-19
EP0956648A1 (fr) 1999-11-17
JP2000509229A (ja) 2000-07-18
SE9601619L (sv) 1997-10-30

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