US1882119A - Means for radio communication - Google Patents

Means for radio communication Download PDF

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Publication number
US1882119A
US1882119A US189206A US18920627A US1882119A US 1882119 A US1882119 A US 1882119A US 189206 A US189206 A US 189206A US 18920627 A US18920627 A US 18920627A US 1882119 A US1882119 A US 1882119A
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circuits
phase
frequency
currents
amplifiers
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Chireix Henri
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/50—Amplitude modulation by converting angle modulation to amplitude modulation

Definitions

  • This invention relates to novel radio-telephony sending and receivingsystems, and more particularly to a transmlttlng system wherein modulatlon of the carrier wave 1s ac- 5 complished b novel means, and to a receiving system a apted to respond to szgnals sent by such transnnttlng system.
  • One object of the present lnvention 1 s the provision in a transmission system of novel means for modulating in amplitude the radio frequency or carrier wave by speech.
  • the second object of the invention 1s to realize a transmission system in which.the radio frequency wave is modulated onlyin J phase when transmitted and not 1n amplitude; in other words, a system whereln the voice or speech has only the effect of producing rapfd variations in phase of the trans- Knitted wave, while the frequency and amplitude of the latterremain unchanged, and toprovide receiver apparatus in which these variations in phase are utilized for the purpose of causing variations in amplitude andy consequently of reproducing the speech. 4
  • the first object of the invention is based upon the observation that, if one excltes an antenna or a line by means of two electromotive forces of the same frequency and prefl erably of the same amplitude, the resultant intensity in the antenna will vary with the phase of the said two electro-motive forces. more particularly speaking, it will become zero when the two electro-motive forces are opposed, and will grow first linearly with the displacement or phase angle from vr.
  • the antenna is excited by means of two electro-motive forces equal in magnitude and dis laced 150 degrees, for example, and if t e voice has the effect o of producing a phase displacement of one of said two electro-motive forces with relation to the other, -the amplitude in the aerial will vary, diminishing for the alterations of the telephone currents ocu) creasing on the contrary in the presence of a1- ternations of the telephone currents causing a decrease in the phase angle.
  • Equation (1) may also be written in this form:
  • the second object of the invention is thus realized 1n the following manner: Sending end: independent generator of low power, tube amplier, means for changing the exciting phase of the amplifier with reference to that of the generator, either by the use of a saturated self-inductance or b the employment of a modulated potentia in quadrature with relation to the normal exciting potential.
  • Receiving end A receiver preferably of the type adaptable to frequency change, followed after amplification by two filters, one a high-pass filter and the other one a low-pass filter, each of said filters united with a detector. After detection, theaudio frequency currents are combined in a 'common circuit united with the telephone or connected with a low-frequency amplifier.
  • ig. ⁇ 1 schematically shows a transmitting arrangement forcarrving out the ,present invention
  • Fig. 1, 1 stands for a radio frequency alternator'.
  • 2 and 2' are two primaries of'Tesla transformers passed by currents conveniently phase-displaced with relation to each other, say, by 150 degrees.
  • 3 are the secondary windings of said transformers, said secondaries serving to excite two circuits, each comprising moreover a tuning coil 4, 4', respectively, a tuning cony denser 5, 5', respectively, and a saturated selfinductance 6, 6', respectively.
  • Each of the saturated self-inductance coils 6, 6' is represented in symbolic form by two transformers connected in series on the primary and secondary ends, though with the primaries reversed or inversed from the point of View of the linx, so as to indicate that there exists no transforming effect between the radio frequency and the audio frequency circuits.
  • 7 stands for a telephone transformer
  • 8 a battery-furnishing a continuous saturation.
  • the two circuits 3, 4,5, 6, and 3', 4', 5', 6 are preferably regulated so as to provide equal values for all elements, at exact tuning or resonance or slightly outside resonance,as maybe desired.
  • the battery 8 is in circuit, but no alternating current potential is applied across the primary terminals of the transformer 7, that is no speech is applied to the microphone.
  • 10 and 10' are two oscillation circuits at the output end of the said ampliers.
  • 11 and 11' are two couplings with the antenna circuit 'represented at 12 and tuned by the agency of inductance coil 13.
  • the total electro-motive force induced in the antenna by the ,two couplings 11 and 11' varies with the phase displacement angle between the two, electro-motive forces induced separately by 11 and 11', and the antenna current naturally will vary in proportion with the total electro-motive force induced, while, on the other hand, if all conditions are symmetrical, the phase angle be- 5-tween the'electro-motive forces 11 and 11 will be identical to that existing between the currents of the secondary circuits 3, 4, 5, 6, and 3 4' 5', 6'.
  • FIG. 2 Another method of practicin the underlying idea of the invention is iagrammatically illustrated in Fig. 2, where 1 stands as before for the radio frequency generator, 2, 3, and 2, 3 for two transformers arranged in such a way that the electro-motive forces induced in the secondaries 3 and 3 are in phase opposition.
  • 14 and 15 are r1- mary and secondary windings of anot er transformer so that the secondary electromotive force induced in 15 is in quadrature relationship with the'electro-motive forces induced in 3 and 3.
  • 16 denotes a complete tube modulator assembly combined with a microphone 17.
  • recourse may be had, for instance, to the well-known method known as the constant-current orplate-.control system.
  • the small graph in Fig. 3 shows the composition of the potentials applied to the amplifiers 9 and 9.
  • AB and AB denote respectively the two potentials due to thetransformers 2 3 and 2'- BD and BD stand for the potentials induced by the transformers 18, 18 in the absence of speech modulation.
  • AD and AD therefore denote the resultant potentials applied at the amplifier terminals 9, 9.
  • the resultant potential under the action of the voice changes from AB to AC, for one amplier, and from AB' to AC', for the other amplifier.
  • the resultant vectors AD and AD will be subject to far less angular deviation.
  • ⁇ A transmitter of the kind embodying the second object of the invention can be built by starting from Figs. 1 and 2 in different manners, for instance, by eliminating all the lower parts havingindices, or if it is desired that the same transmitter should embody the two objects and prime features of the invention, this can be effected still more simply.
  • Fig. 5 shows diagrammatically an assembly or equipment adapted to receive transmissions etl'ected by phase modulation.
  • This receiver equipment stands for the antenna, 22 for an amplifierreceiver without detector.
  • This receiver equipment is preferably of the type allowing of change in frequency.
  • 23 and 24 are bandpass filters each followed by a detector, and allowing of the passage, one of the wave changed, if desired, in frequency, as wellas the higher frequencies up to 5 to 7 thousand' cycles, for instance, while stopping all lower frequencies, the other also permitting of the passage of the wave changed, if desired; in
  • .Q5-and 25 stand for two low-frequency transformers connected in series, with the direction of winding being suitably chosen to add the incoming telephone currents. 26 finally stands for a lowfrequency amplifier connected with a telephone receiver 27.
  • modulation of the phase occasions a modulation in amplitude of a vector in quadrature with the mian vector (Equation (1) This amplitudel modulation may be resolved.
  • phase modulation is also a plicable to modulated telegraphy.
  • it is suilicient to ass into the saturated self-inductance coils ig. 1 arranged in a way as illustrated in Fig. 4, a musical finger quency current chopped up by a key.
  • A11-- other possible scheme would be to pass into the same self-inductance coils several musical frequencies each controlled by a key.
  • a utilization circuit energized by two independent sources of the same frequency but presenting a predetermined phase difference between themselves of substantially 150 degrees. and means. ⁇ including saturated self-inductance coils, for varying the phase difference, said means being controlled by sound waves.
  • a pair of circuits having similar characteristics, means for generating high frequency currents in said circuits substantially equal in magnitude and displaced about 150 degrees, a power amplifier in each of said circuits, oscillation circuits coupled to said amplifiers and to a utilization circuit, and means coupled to said first mentioned circuits for varying the phase difference between the currents in said two circuits in correspondence with sound vibrations, to correspondtal wave y gly alter the resultant current in said utilization circuit.
  • the combination o a pair of circuits havin similar characteristics, means for generating high frequency currents in said circuits substantially equal in magnitude anddisplaced about 150 degrees, a power amplifier in each of said circuits', oscillation circuits coupled to 'said amplifiers and to a utilization circuit, saturated self-inductances inserted in each of said first mentioned circuits, and means effecting the saturation of said inductances controlled by sound vibrations foi'. varying the phase difference in said two circuits, thereby correspondingly altering the resultant current in said utilization circuit.
  • a receiver for a desired signal'modulated carrier wave comprising collecting means, means to heterodyne the received carrier wave to an intermediate frequency, a filter tuned to pass frequencies higher than the intermediate frequency, a second filter arranged to simultaneously pass frequencies lower than the intermediate frequency, detector means associated with each filter, and means to combine the resulting audio frequencies subtractively.
  • a pair of circuits having similar characteristics, means for generating in said circuits high frequency currents of substantially equal ⁇ and constant amplitude and definite phase difference less than 180, means for varying said phase difference in accordance with sound waves, two distinct amplifiers havin one or more stages, one of said ylol amplifiers eing excited by one of said cir! l cuits, the other by the other of said circuits, and a utilization circuit coupled to the outputs of said amplifiers.
  • a pair of circuits having similar characteristics, means for generating in said circuits high frequency currents of substantiallyequal amplitude and a definite phase difference less than 180, means for varying said phase difference in accordance with sound waves comprising an arrangement for superposing on the high frequency unmodulated current in each of said circuits an auxiliary modulated current leading the unmodulated component in one of said circuits by 90 and lagging the unmodulated component in the other of said circuits by 90, two distinct amplifiers having one or more stages,
  • a radio receiving system adapted to receive waves modulated practically in phase only, comprising an aerial system, means to heterodyne the received signal so as to obtain a desired intermediate' frequency of its carrier wave, a high pass filter for said intermediate frequency and upper side band, a low pass filter for said intermediate frequency and lower side band, both filters being connected in parallel and each followed by a detector, the outputs of said detectors being connected in opposition, and a low frequency amplifier and signal responsive means associated with the detector outputs.
  • a secret radio signalling system including a transmitter for phase modulated Waves and a receiver adapted to cooperate therewith, the transmitter comprising a pair of circuits each coupled to an amplifier, means tively.

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US189206A 1926-05-10 1927-05-06 Means for radio communication Expired - Lifetime US1882119A (en)

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FR515859X 1926-05-10

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BE (1) BE341637A (fr)
DE (1) DE515859C (fr)
FR (1) FR629595A (fr)
NL (1) NL25389C (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433380A (en) * 1942-07-03 1947-12-30 Int Standard Electric Corp Amplifying arrangement
US2611825A (en) * 1948-04-28 1952-09-23 Donald B Harris Multichannel transmission system
US2615986A (en) * 1948-01-20 1952-10-28 Meguer V Kalfaian Phase modulation system
US7184723B2 (en) 2004-10-22 2007-02-27 Parkervision, Inc. Systems and methods for vector power amplification
US20070247217A1 (en) * 2006-04-24 2007-10-25 Sorrells David F Systems and methods of rf power transmission, modulation, and amplification, including embodiments for amplifier class transitioning
US7620129B2 (en) 2007-01-16 2009-11-17 Parkervision, Inc. RF power transmission, modulation, and amplification, including embodiments for generating vector modulation control signals
US7885682B2 (en) 2006-04-24 2011-02-08 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same
US7911272B2 (en) 2007-06-19 2011-03-22 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments
US8013675B2 (en) 2007-06-19 2011-09-06 Parkervision, Inc. Combiner-less multiple input single output (MISO) amplification with blended control
US8031804B2 (en) 2006-04-24 2011-10-04 Parkervision, Inc. Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
US8315336B2 (en) 2007-05-18 2012-11-20 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including a switching stage embodiment
US8334722B2 (en) 2007-06-28 2012-12-18 Parkervision, Inc. Systems and methods of RF power transmission, modulation and amplification
US8755454B2 (en) 2011-06-02 2014-06-17 Parkervision, Inc. Antenna control
US9106316B2 (en) 2005-10-24 2015-08-11 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification
US9608677B2 (en) 2005-10-24 2017-03-28 Parker Vision, Inc Systems and methods of RF power transmission, modulation, and amplification
US10278131B2 (en) 2013-09-17 2019-04-30 Parkervision, Inc. Method, apparatus and system for rendering an information bearing function of time
US11550174B2 (en) 2016-10-18 2023-01-10 Trumpf Schweiz Ag Operating a high-frequency driver circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL57174C (fr) * 1938-12-02

Cited By (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433380A (en) * 1942-07-03 1947-12-30 Int Standard Electric Corp Amplifying arrangement
US2615986A (en) * 1948-01-20 1952-10-28 Meguer V Kalfaian Phase modulation system
US2611825A (en) * 1948-04-28 1952-09-23 Donald B Harris Multichannel transmission system
US8280321B2 (en) 2004-10-22 2012-10-02 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including Cartesian-Polar-Cartesian-Polar (CPCP) embodiments
US9143088B2 (en) 2004-10-22 2015-09-22 Parkervision, Inc. Control modules
US9768733B2 (en) 2004-10-22 2017-09-19 Parker Vision, Inc. Multiple input single output device with vector signal and bias signal inputs
US7327803B2 (en) 2004-10-22 2008-02-05 Parkervision, Inc. Systems and methods for vector power amplification
US8351870B2 (en) 2004-10-22 2013-01-08 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including cartesian 4-branch embodiments
US7844235B2 (en) 2004-10-22 2010-11-30 Parkervision, Inc. RF power transmission, modulation, and amplification, including harmonic control embodiments
US7647030B2 (en) 2004-10-22 2010-01-12 Parkervision, Inc. Multiple input single output (MISO) amplifier with circuit branch output tracking
US7184723B2 (en) 2004-10-22 2007-02-27 Parkervision, Inc. Systems and methods for vector power amplification
US7421036B2 (en) 2004-10-22 2008-09-02 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including transfer function embodiments
US7466760B2 (en) 2004-10-22 2008-12-16 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including transfer function embodiments
US7526261B2 (en) 2004-10-22 2009-04-28 Parkervision, Inc. RF power transmission, modulation, and amplification, including cartesian 4-branch embodiments
US9197164B2 (en) 2004-10-22 2015-11-24 Parkervision, Inc. RF power transmission, modulation, and amplification, including direct cartesian 2-branch embodiments
US7639072B2 (en) 2004-10-22 2009-12-29 Parkervision, Inc. Controlling a power amplifier to transition among amplifier operational classes according to at least an output signal waveform trajectory
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
US7672650B2 (en) 2004-10-22 2010-03-02 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including multiple input single output (MISO) amplifier embodiments comprising harmonic control circuitry
US9166528B2 (en) 2004-10-22 2015-10-20 Parkervision, Inc. RF power transmission, modulation, and amplification embodiments
US7835709B2 (en) 2004-10-22 2010-11-16 Parkervision, Inc. RF power transmission, modulation, and amplification using multiple input single output (MISO) amplifiers to process phase angle and magnitude information
US8406711B2 (en) 2004-10-22 2013-03-26 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including a Cartesian-Polar-Cartesian-Polar (CPCP) embodiment
US20070116145A1 (en) * 2004-10-22 2007-05-24 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including transfer function embodiments
US8233858B2 (en) 2004-10-22 2012-07-31 Parkervision, Inc. RF power transmission, modulation, and amplification embodiments, including control circuitry for controlling power amplifier output stages
US8428527B2 (en) 2004-10-22 2013-04-23 Parkervision, Inc. RF power transmission, modulation, and amplification, including direct cartesian 2-branch embodiments
US7932776B2 (en) 2004-10-22 2011-04-26 Parkervision, Inc. RF power transmission, modulation, and amplification embodiments
US8913974B2 (en) 2004-10-22 2014-12-16 Parkervision, Inc. RF power transmission, modulation, and amplification, including direct cartesian 2-branch embodiments
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
US8781418B2 (en) 2004-10-22 2014-07-15 Parkervision, Inc. Power amplification based on phase angle controlled reference signal and amplitude control signal
US8639196B2 (en) 2004-10-22 2014-01-28 Parkervision, Inc. Control modules
US8626093B2 (en) 2004-10-22 2014-01-07 Parkervision, Inc. RF power transmission, modulation, and amplification embodiments
US8577313B2 (en) 2004-10-22 2013-11-05 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including output stage protection circuitry
US8447248B2 (en) 2004-10-22 2013-05-21 Parkervision, Inc. RF power transmission, modulation, and amplification, including power control of multiple input single output (MISO) amplifiers
US8433264B2 (en) 2004-10-22 2013-04-30 Parkervision, Inc. Multiple input single output (MISO) amplifier having multiple transistors whose output voltages substantially equal the amplifier output voltage
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
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
US7885682B2 (en) 2006-04-24 2011-02-08 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same
US7378902B2 (en) 2006-04-24 2008-05-27 Parkervision, Inc Systems and methods of RF power transmission, modulation, and amplification, including embodiments for gain and phase control
US8059749B2 (en) 2006-04-24 2011-11-15 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
US8050353B2 (en) 2006-04-24 2011-11-01 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
US8036306B2 (en) 2006-04-24 2011-10-11 Parkervision, Inc. Systems and methods of RF power transmission, modulation and amplification, including embodiments for compensating for waveform distortion
US20070247217A1 (en) * 2006-04-24 2007-10-25 Sorrells David F Systems and methods of rf power transmission, modulation, and amplification, including embodiments for amplifier class transitioning
US7355470B2 (en) 2006-04-24 2008-04-08 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning
US7937106B2 (en) 2006-04-24 2011-05-03 ParkerVision, Inc, Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same
US8031804B2 (en) 2006-04-24 2011-10-04 Parkervision, Inc. Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
US8026764B2 (en) 2006-04-24 2011-09-27 Parkervision, Inc. Generation and amplification of substantially constant envelope signals, including switching an output among a plurality of nodes
US7414469B2 (en) 2006-04-24 2008-08-19 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning
US7423477B2 (en) 2006-04-24 2008-09-09 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning
US7750733B2 (en) 2006-04-24 2010-07-06 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for extending RF transmission bandwidth
US7949365B2 (en) 2006-04-24 2011-05-24 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same
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
US7929989B2 (en) 2006-04-24 2011-04-19 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same
US8913691B2 (en) 2006-08-24 2014-12-16 Parkervision, Inc. Controlling output power of multiple-input single-output (MISO) device
US7620129B2 (en) 2007-01-16 2009-11-17 Parkervision, Inc. RF power transmission, modulation, and amplification, including embodiments for generating vector modulation control signals
US8548093B2 (en) 2007-05-18 2013-10-01 Parkervision, Inc. Power amplification based on frequency control signal
US8315336B2 (en) 2007-05-18 2012-11-20 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including a switching stage embodiment
US7911272B2 (en) 2007-06-19 2011-03-22 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments
US8766717B2 (en) 2007-06-19 2014-07-01 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including varying weights of control signals
US8013675B2 (en) 2007-06-19 2011-09-06 Parkervision, Inc. Combiner-less multiple input single output (MISO) amplification with blended control
US8410849B2 (en) 2007-06-19 2013-04-02 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments
US8502600B2 (en) 2007-06-19 2013-08-06 Parkervision, Inc. Combiner-less multiple input single output (MISO) amplification with blended control
US8461924B2 (en) 2007-06-19 2013-06-11 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for controlling a transimpedance node
US8334722B2 (en) 2007-06-28 2012-12-18 Parkervision, Inc. Systems and methods of RF power transmission, modulation and amplification
US8884694B2 (en) 2007-06-28 2014-11-11 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification
US8755454B2 (en) 2011-06-02 2014-06-17 Parkervision, Inc. Antenna control
US10278131B2 (en) 2013-09-17 2019-04-30 Parkervision, Inc. Method, apparatus and system for rendering an information bearing function of time
US11550174B2 (en) 2016-10-18 2023-01-10 Trumpf Schweiz Ag Operating a high-frequency driver circuit

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Publication number Publication date
FR629595A (fr) 1927-11-14
NL25389C (fr)
BE341637A (fr)
DE515859C (de) 1931-01-15

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