Showing papers on "Microstrip antenna published in 1974"
TL;DR: In this paper, a new class of antennas using microstrips to form the feed networks and radiators is presented in this communication, which have four distinct advantages: 1) cost, 2) performance, 3) ease of installation, and 4) low profile conformal design.
Abstract: A new class of antennas using microstrips to form the feed networks and radiators is presented in this communication. These antennas have four distinct advantages: 1) cost, 2) performance, 3) ease of installation, and 4) the low profile conformal design. The application of these antennas is limited to small bandwidths. Phased arrays using these techniques are also discussed.
608 citations
Book•
01 Jan 1974
TL;DR: In this article, the authors proposed a new definition of mutual impedance for application in array phase shifters, based on the idea of the butler matrix, which is used in the analysis of microstrip antenna arrays.
Abstract: theory and application of antenna arrays ouaps theory and application of antenna arrays theory and application of antenna arrays zaraa basic antenna theory and application theory and application of antenna arrays satcar antenna arrays antenna theory fractal antenna engineering: the theory and design of antenna theory and design john wiley & sons applications of antenna arrays to mobile communications 5. antenna types ncjrs robust synchronization of di erent coupled oscillators design of microstrip patch antenna array for wlan application session 3p3 antenna array synthesis | theory, algorithms eece 174 antenna theory and design opus college of theory and application of array coils in mr spectroscopy application of butler matrix to a tree structure of design and analysis of microstrip patch antenna arrays a study of loaded microstrip antennas and their compwnent part notice defense technical information center leaky cpw-based slot antenna arrays for millimeter-wave antenna array synthesis for suppressed side lobe level antenna theory tutorialspoint application of the neural network to the synthesis of a power wave theory of antennas e-fermat synthesis of thinned linear and planar antenna arrays fractal antenna elements and arrays university of maryland the application of the fdtd method to aperturecoupled a new definition of mutual impedance for application in array phase shifters: theory and technology origins of the digital antenna array theory slyusarev eel 4461 antenna systems eel 3472 university of florida double application of superconductor and photonic material session 2p7 antenna and array: theory and design piers course syllabus eel 4935/5462 antenna theory academics antenna array optimization using evolutionary approaches design of dielectric resonator antenna arrays for wireless planar antenna arrays for correlation direction finding design, simulation and tests of a low-cost microstrip design of microstrip antennas arrays for applications in design of antennas and antenna arrays [ d12 eth zürich design and performance analysis of microstrip array koch fractal antenna application in monopulse antenna array
148 citations
Patent•
03 Oct 1974
TL;DR: In this article, a microstrip antenna structure is provided where a plurality of relatively narrow elements, resonant in their longer dimensions, are organized into two staggered or offset sets of interleaved elements with each set being fed from opposite sides of the structure through a corporate microstrip feed line from a common feed point.
Abstract: A microstrip antenna structure is provided wherein a plurality of relatively narrow elements, resonant in their longer dimensions, are organized into two staggered or offset sets of interleaved elements with each set being fed from opposite sides of the structure through a corporate microstrip feed line from a common feed point. The aligned radiating ends of the two offset sets of elements simulate four line sources of radiation. The preferred embodiment produces an efficient end-fire radiation pattern from this relatively compact structure which may, in turn, constitute an individual end-fire radiator in a larger array structure.
46 citations
TL;DR: In this paper, it was demonstrated theoretically and experimentally that a log-periodic monopole array with a meander-line feeder may be expected to exhibit high values of voltage standing-wave ratio.
Abstract: It is demonstrated theoretically and experimentally that a log-periodic monopole array with a meander-line feeder may be expected to exhibit high values of voltage standing-wave ratio. Improved match can be obtained by allowing the impedance of the feeder to go to a higher value near each monopole. A good match to 50 \Omega is achieved in this way.
29 citations
01 Sep 1974
TL;DR: In this paper, an orthogonal solution of the general non-uniformly spaced antenna array by the orthogonality method was given, when the array factor f(ϕ, ϑ) is given.
Abstract: An effort is made to give a solution of the general non-unifomly spaced antenna array by the orthogonal method when the array factor f(ϕ, ϑ) is given.
27 citations
TL;DR: In this paper, the fundamental element pattern-active reflection coefficient interrelationships in uniform phased arrays are summarized, extended, and integrated, and for central elements of sufficiently large arrays the results provide the basis for attractive measurement schemes of array parameters.
Abstract: Several fundamental element pattern-active reflection coefficient interrelationships in uniform phased arrays are summarized, extended, and integrated. For central elements of sufficiently large arrays the results provide the basis for attractive measurement schemes of array parameters.
21 citations
10 Jun 1974
20 citations
TL;DR: In this paper, a planar log-periodic antenna structure with radiation characteristics similar to those of a half-wave dipole has been found, which can be easily fabricated by using printed circuit techniques.
Abstract: A planar log-periodic antenna structure that has radiation characteristics similar to those of a half-wave dipole has been found. The bandwidth can be as large as desired, and antennas can be easily fabricated by using printed circuit techniques. When fed with a suitable balun, VSWR's lower than 1.8:1 can be obtained over a wide-frequency band.
16 citations
TL;DR: In this article, a simple mode-compensation technique is introduced into the design of a pair of parallel-coupled microstrip lines and applied to a microstrip traveling-wave loop-directional filter.
Abstract: A simple mode-compensation technique is introduced into the design of a pair of parallel-coupled microstrip lines and applied to a microstrip traveling-wave loop-directional filter. The compensated design of the filter shows a substantial improvement in its performance.
12 citations
TL;DR: In this paper, a conformal array that provides, by means of single-pole multithrow switches and microstrip power dividers, either an omnidirectional or an electronically despun directional radiation pattern is presented.
Abstract: A conformal array is presented that provides, by means of single-pole multithrow switches and microstrip power dividers, either an omnidirectional or an electronically despun directional radiation pattern. Switching techniques for scanning the directional pattern of circular arrays are discussed. The design parameters and measured results of an experimental 64-element array flush-mounted on a cylindrical spacecraft, are presented. Over the 40-percent bandwidth at S band, measured results show close agreement with theory.
7 citations
01 Jan 1974
TL;DR: A temperature-stable high-Q dielectric resonator, developed for microstrip circuits, and used to stabilize the microstrip oscillator, will be described.
Abstract: A temperature-stable high-Q dielectric resonator, developed for microstrip circuits, and used to stabilize the microstrip oscillator, will be described.
Patent•
13 Jun 1974TL;DR: A composite antenna is a combination of a first element for a VHF signal formed in a modified loaded loop antenna and a second element for UHF signals formed in an arraying antenna, both of which are disposed on their respective supports rotatable independently and compactly arranged as discussed by the authors.
Abstract: A composite antenna apparatus having a combination of a first element for a VHF signal formed in a modified loaded loop antenna and a second element for a UHF signal formed in a modified arraying antenna, both of which are disposed on their respective supports rotatable independently and compactly arranged.
01 May 1974
TL;DR: In this paper, the design parameters of a microstrip antenna were studied to determine its performance characteristics as affected by an atmospheric entry probe environment, and the results of the literature search and pattern tests confirm that the micro-strip antenna is a good choice as a transmitting antenna on the SAEP.
Abstract: The design parameters of a microstrip antenna were studied to determine its performance characteristics as affected by an atmospheric entry probe environment. The technical literature was reviewed to identify the known design and performance characteristics. These data were used to evaluate the expected effects of mission environments on the microstrip antenna design proposed for the Saturn/Uranus Atmospheric Entry Probe (SAEP). Radiation patterns and VSWR measurements were made to evaluate the performance in the SAEP thermal environment. Results of the literature search and pattern tests confirm that the microstrip antenna is a good choice as a transmitting antenna on the SAEP. The microstrip antenna is efficient, compact, and well suited to a space environment. The pattern can be controlled with a minimum beamwidth of 60 degrees (air substrate; e.g., honeycomb structure) and a maximum on the order of 100 degrees with higher dielectric constant substrates. The power handling capacity is good and can be improved by covering the antenna with a dielectric cover.
12 Jun 1974
TL;DR: In this article, an accurate and efficient method was developed for computing the resonant frequencies of microstrip resonators, and the agreement of the numerical results with experimental data was extremely good.
Abstract: An accurate and efficient method was developed for computing the resonant frequencies of microstrip resonators. The numerical data were compared with other theoretical and experimental results. The agreement of the numerical results with experimental data was extremely good.
01 Nov 1974
TL;DR: The phase and amplitude weighting of the waveform received at each element of an antenna array can be adaptively controlled in real time to optimize the antenna pattern for a variety of communication links.
Abstract: The phase and amplitude weighting of the waveform received at each element of an antenna array can be adaptively controlled in real time to optimize the antenna pattern for a variety of communication links. In this paper we present the results of experiments conducted with an SHF self-phasing array and with an adaptive UHF null-forming array.