Title :
Analysis of a printed loop antenna using a Fourier series expansion for the loop current
Author_Institution :
Dept. of Electr. Eng., Kentucky Univ., Lexington, KY, USA
Abstract :
The major problem with printed antennas has been dealing with the Green´s function which contains Sommerfeld-type integrals that require a careful numerical treatment. In the present work, the printed wire-loop antenna has been analyzed rigorously through Fourier series expansion of the current distribution. The procedure becomes remarkably simple because of the orthogonality of the expansion functions. A Green´s function technique is used in which a set of Pocklington-type integral equations (EFIE) is derived and transformed using the method of moments into a set of simultaneous linear equations for the unknown current coefficients. The input impedance is computed as a function of loop size with the dielectric constant as a parameter. The current distribution for the resonant loop case is also presented.<>
Keywords :
Green´s function methods; antenna theory; current distribution; integral equations; loop antennas; microstrip antennas; series (mathematics); EFIE; Fourier series expansion; Green´s function technique; Pocklington-type integral equations; current coefficients; current distribution; dielectric constant; expansion functions; input impedance; loop current; loop size; method of moments; printed wire-loop antenna; resonant loop; simultaneous linear equations; Current distribution; Dielectric constant; Dielectric substrates; Fourier series; Impedance; Integral equations; Kernel; Message-oriented middleware; Moment methods; Wire;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-0730-5
DOI :
10.1109/APS.1992.221428
