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Broadcast and Television Receivers, IRE Transactions on

Popular Articles (March 2015)

Includes the top 50 most frequently downloaded documents for this publication according to the most recent monthly usage statistics.
  • 1. Ferrite Antennas for A.M. Broadcast Receivers

    Publication Year: 1962 , Page(s): 50 - 59
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1497 KB)  

    The design of a broadcast receiver requires consideration of the type of antenna to be used such that the best performance of the system is maintained. In the past, the use of a built-in air loop antenna was common in the design of home receivers and some portables. However, the effectiveness of this type of antenna decreases with its decrease in dimensions. Today, with the widespread use of transistors and the remarkable trend of appreciation of compact devices on the part of the customer, the use of such antenna has been replaced by the use of the ferrite loop antenna. The ferrite rod concentrates in a small area the magnetic flux from a large area, thus reducing the dimensions of the antenna. View full abstract»

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  • 2. The Traveling-Wave VHF Television Transmitting Antenna

    Publication Year: 1957 , Page(s): 49 - 58
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (6463 KB)  

    A new simple and rugged television antenna has been developed for vhf high channels. The antenna utilizes pairs of slot radiators cut longitudinally in a vertical pipe. In each pair the slots are fed in opposite phase, and the pairs are displaced one-quarter wavelength from each other along the pole. Every other pair is in one vertical plane and the remaining pairs in another perpendicular to this. The slots are fed with a traveling wave within the pole. View full abstract»

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  • 3. Some Notes on the Hybrid-Pi Transistor Equivalent Circuit

    Publication Year: 1958 , Page(s): 92 - 109
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2604 KB)  

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  • 4. Automatic gain control of transistor amplifiers

    Publication Year: 1955 , Page(s): 1 - 15
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    Due to the dependence of transistor small signal parameters on the dc operating point, the gain of a transistor amplifier is function of the emitter current Ie and of the collector voltage Vc. An analysis of the variation of the series-parallel transistor parameters hij with the operating point shows that the gain decreases with decreasing Ie or decreasing Vc in the region of small values of Ie and Vc. The appreciable control power necessary to vary Ie or Vc (of possibly several amplifying stages) can be obtained advantageously by operating the controlled stages as dc amplifiers of the control signal and employing transistor detectors. Automatic gain control systems applicable to linear amplifiers and converters using Ie and Vc control have been developed, and their performance is described in this paper. Some problems arising in-transistor AGC systems are distortion, detuning and bandwidth variation. View full abstract»

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  • 5. A Survey of the Performance Characteristics of Television Receivers and Antennae for the UHF-TV Project'

    Publication Year: 1961 , Page(s): 9 - 12
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (609 KB)  

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  • 6. Preventing Fires From Electrical Causes in the Design and Manufacture of Radio and Television Receivers

    Publication Year: 1955 , Page(s): 28 - 36
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  • 7. A New Concept in Citizen's Band Equipment

    Publication Year: 1960 , Page(s): 47 - 51
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    The 27 Mc citizen's radio service was established to provide the public with a short range, personal communication facility. It allows the public to realize benefits similar to those provided commercial users of the business services. Whereas, a station in the latter service is licensed for a specific purpose and frequency, the citizen's service provides the user with 23 frequencies and personal use within the scope of the regulations. The market for this type of equipment is essentially a consumer market with over 100,000 licenses issued and 10,000 applications being received by the FCC every month. As with any consumer product, one of the most important problems of the manufacturer is to provide the purchaser with the utmost in performance and conveniences at the lowest possible cost. Another consideration is ease of operation of the equipment. In particular, consideration should be given to young and old of both sexes in that the unit should be simple to operate. View full abstract»

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  • 8. A Printed Circuit IF Amplifier for Color TV

    Publication Year: 1956 , Page(s): 50 - 52
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1911 KB)  

    This paper deals with the design of a 41 mc IF strip for color tv, in which inductances and wiring are etched on the same board. Advantages of this method, together with problems encountered and their solution, are covered. It is shown that one of the least expensive and most satisfactory methods of tuning printed inductances is with vanes. Graphs of Q variations with distance from coil and tuning range are presented for both vanes and powdered iron slugs. The problems of shielding the large field of the printed coils and elimination of undesirable ground currents are covered. Performance data and response curves of a representative strip are given. View full abstract»

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  • 9. Technical Requirements of the Australian Television System

    Publication Year: 1955 , Page(s): 16 - 27
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    Following a brief discussion of the important aspects of television standards, those used by various countries are described. The history of the Australian standards is then outlined and specific aspects of these standards are dealt with in some detail. The effect of introducing colour television is considered. After summarizing the frequency channels available for Australian television services, standards of allocation of frequency and power are discussed. Finally some conclusions from tentative frequency allocation plans are given. View full abstract»

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  • 10. Considerations in Transistor Automobile Receiver Front End Design

    Publication Year: 1959 , Page(s): 31 - 37
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (798 KB)  

    This paper discusses the requirements which must be considered in the design of an r-f amplifier stage and converter for a transistor automobile receiver. Several coupling networks for the antenna and interstage circuits are discussed and performance data is given for various combinations of circuits. Data is given for a converter circuit including voltage and temperature effects on frequency stability. View full abstract»

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  • 11. Design of Stereophonic Receiver for a Stereo System in the FM Band using an AM Subcarrier

    Publication Year: 1961 , Page(s): 67 - 72
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1158 KB)  

    From the FM discriminator in the receiver we derive the composite signal containing a low frequency audio signal, a modulated subcarrier and a pilot signal related to the subcarrier. The stereophonic signal demodulator can operate on the composite signal in such fashion as to produce directly a left and right stereophonic signal. View full abstract»

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  • 12. Four Terminal Equivalent Circuits of Parametric Diodes

    Publication Year: 1959 , Page(s): 83 - 93
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1359 KB)  

    Four terminal equivalent circuits of variable capacitance (parametric) diodes used in various configurations of converters and amplifiers are presented. These equivalent circuits are derived from small signal approximations for the non-linear dynamic capacitance of a diode. The cases considered involve three frequencies, namely input and output signal frequencies and pumping frequency for converters or input signal frequency, idler and pumping frequencies for amplifiers. View full abstract»

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  • 13. An Ultra-Low-Distortion Transistorized Power Amplifier

    Publication Year: 1961 , Page(s): 81 - 87
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2485 KB)  

    The development of a new type of power transistor has made possible the construction of ultra-high-performance audio-frequency amplifiers which can equal the performance of the finest vacuum-tube amplifiers available. The design, construction, and performance characteristics of such an amplifier, using RCA drift-field power transistors, is discussed. The amplifier is capable of providing a power output of 50 watts at less than one-half per cent distortion from 20 cycles to 20,000 cycles. Also discussed are a five-watt class A amplifier and a 15-watt-per-channel stereo amplifier which combine high performance with economy. View full abstract»

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  • 14. Methods for Determining Amplitude-Modulation Rejection Performance of Frequency-Modulation Detectors

    Publication Year: 1958 , Page(s): 12 - 14
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  • 15. A Transistorized AM-FM Receiver using Madt Transistors

    Publication Year: 1960 , Page(s): 42 - 46
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    Several papers have been written describing the design and performance of transistorized AM-FM receivers. The purpose of this paper, is to discuss a completely transistorized AM-FM receiver that uses transistors whose characteristics have been optimized and specified for such a set. We will discuss the selection of transistors to be used and describe the receiver circuitry and performance. View full abstract»

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  • 16. UHF Television Tuner Local Oscillator Radiation

    Publication Year: 1955 , Page(s): 44 - 51
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (4802 KB)  

    Factors important to the design of a low radiation uhf television tuner have been empirically studied within the framework of the open field measuring technique specified by the FCC. Although there is some question as to the reliability of the open field method some significant results have been obtained. In particular it has been established that the magnitude of radiation is dependent on basic tuner circuitry as well as shielding and by-passing, namely on the type of oscillator, crystal circuit, and number of preselectors. An existing commercial model which employed a balanced oscillator and two preselectors was developed until radiation was below the proposed FCC limit of 500 uv/m. These developments were then successfully applied to a recently designed small package model. It was not necessary to make any sacrifice of overall tuner performance. View full abstract»

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  • 17. Stagger-Tuned Transistor Video Amplifiers

    Publication Year: 1956 , Page(s): 53 - 56
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (597 KB)  

    A method of analyzing common-emitter transistor video amplifiers has been given that is sufficiently simple and accurate for design work. This paper discusses the use of the above design method for the purpose of obtaining RC-coupled stagger-tuned video amplifiers. For a poles-canceling-zeros scheme, the design equations are given relating external circuit parameters to desired response shape and transistor parameters. By means of stagger tuning, the gain-times-bandwidth factor of a transistor amplifier is kept at unity as in the case of stagger-tuned vacuum tube amplifiers. Experimental results are given for amplifiers that are designed to be maximally flat by this method. View full abstract»

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  • 18. Stereophonic FM Broadcasting

    Publication Year: 1961 , Page(s): 73 - 80
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1818 KB)  

    In arriving at a suitable choice of transmission parameters for stereophonic FM broadcasting, consideration must be given to several factors, as follows: 1. The modulation choice should provide an aurally-balanced program for the monophonic listener. 2. A reasonable compromise should be made between the stereophonic signal-to-noise ratio and the monophonic signal-to-noise ratio as compared to monophonic broadcasting. 3. Receivers designed for the system should be capable of reliable operation yet should be reasonably inexpensive. 4. If possible, the system should provide an additional channel for other services without degrading the desired service. View full abstract»

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  • 19. Transistorized FM and TV Limiter Design and Performance

    Publication Year: 1960 , Page(s): 10 - 14
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    This paper discusses recent experiments which demonstrate the feasibility of using transistor limiters at 4.5 and 10.7 mc. The circuits are fully described and the limiting performance discussed in detail. In the past transistors have sometimes shown poor performance as limiters because of a non-linear feedback effect between the collector and base of the transistor. The circuits that are to be presented are novel in that they include provisions for eliminating this effect. The circuits to be described are fully capable of meeting the design requirements of conventional vacuum tube limiters and as such permit the design of transistorized equipment which is fully competitive with vacuum tube equipment in this respect. View full abstract»

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  • 20. A Drift-Free Direct-Coupled Amplifier Utilizing A Clipper-RC Feedback Loop

    Publication Year: 1959 , Page(s): 8 - 15
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    A unique drift-free direct-coupled amplifier has been developed employing a clipper and an RC integrating circuit in a feedback loop for stability. Equations are developed and computed and experimental curves are given for amplitude and phase-shift response as a function of frequency showing an extremely sharp power drop-off at the low end. View full abstract»

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  • 21. Designing Solar Power Supplies for Transistorized Radio Receivers

    Publication Year: 1960 , Page(s): 21 - 24
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    The development of fully transistorized radio receivers has resulted in units having extremely low input power requirements. Paralleling the growth and improvement of the transistor was the development of the Silicon Solar Cell, a photovoltaic device capable of converting light energy directly into electrical power. It seems natural then, that a compatible system would evolve in which light energy would be used to supply power to transistorized radios via the mechanism of the Solar Cell. View full abstract»

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  • 22. A Constant Input-Impedance RF Amplifier for VHF Television Receivers

    Publication Year: 1957 , Page(s): 65 - 70
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    Most conventional television tuners exhibit undesirable variations of input impedance at different frequencies within the pass bands and with varying bias voltages applied to the rf amplifier tube. An analysis of the input characteristics of such tuners and commercial television antenna systems, including transmission lines, shows the formation of selective mismatch under certain conditions which may form ``holes'' within the pass band of any television channel. Such holes degrade the picture quality, particularly for color reception when a deep hole falls upon the color subcarrier. One solution to this problem is presented in this paper, using a constant input-impedance rf amplifier which consists of two stages of grounded-grid triodes in cascade with agc voltage being applied to the grid of the second stage. Other performance characteristics of this amplifier, such as noise factor, gain, overloading capability, cross modulation, etc., as compared to those of a conventional cascode rf amplifier, also are described. View full abstract»

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Aims & Scope

This Transactions ceased publication in 1962. The current retitled version is named IEEE Transactions on Consumer Electronics.

Full Aims & Scope