Applying electric-magnetic-electric (EME) composite metal strips to reduce the size of patch antennas

Tsai, Chang-Yi; Tzuang, C.-K.C.

doi:10.1109/apmc.2001.985336

APMC 2001. 2001 Asia-Pacific Microwave Conference (Cat. No.01TH8577)

DOI: 10.1109/apmc.2001.985336

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Applying electric-magnetic-electric (EME) composite metal strips to reduce the size of patch antennas

Chang-Yi Tsai

C.-K.C. Tzuang²

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Cited by 2 publications

References 7 publications

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Artificially integrated synthetic rectangular waveguide

Tzuang

2005

IEEE Trans. Antennas Propagat.

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A synthetic rectangular waveguide (SRW), which consists of two electrical sidewalls and two parallel periodical structures placed at the top and bottom surfaces of the waveguide, is presented. The SRW is made by multilayered integrated circuit processes, which typically have large ratios of SRW lateral dimensions to substrate thickness. Two theoretical methods, finite-element method and deembedding of composite structure consisting of SRW and mode converters, are applied to investigate the propagation characteristics of the SRW. Application of the dispersion characteristics of the two-dimensional periodical structures coupled with appropriate mode converter designs leads to results in SRW designs supporting TE 10 , TM 00 , and TM 10 modes. Measurements and the two theoretical approaches indicate that the slow-wave factor is 4.9 and -factor is 260 at 6.85 GHz for the TE 10 mode propagation with a cutoff frequency of 4.10 GHz (0.348 factor of cutoff frequency of conventional rectangular waveguide using the same material and dimensions). The theoretical data show the TM 00 mode to have a slow-wave factor of 1.8, -factor of 187.6 at 11.4 GHz, and cutoff frequency of 10.2 GHz. The TM 10 mode has a slow-wave factor of 1.98, -factor of 187.6 at 12.5 GHz, and cutoff frequency of 10.4 GHz.

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Artificially integrated synthetic rectangular waveguide

Tzuang

2005

IEEE Trans. Antennas Propagat.

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A Novel Miniaturization Technique of a Microstrip Patch Antenna using Patch Resonators

2004

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Microstrip patch antennas have been widely used in mobile and satellite communication systems due to their great advantages of low cost, low profile, lightweight and easy fabrication. However, the dimensions of a classical patch antenna are on the order of half a wavelength. This paper proposes a new approach to reduce the size of the antenna by embedding several patch resonators in an antenna substrate. Periodically installed resonators are expected to exhibit slow-wave effects. First of all, a microstrip delay line having a train of patch resonators in its substrate is demonstrated theoretically by the conventional FDTD method, and the slow-wave effect is discussed. Next, a 2-dimentional patch resonator array is applied to a microstrip patch antenna, and the effectiveness of the proposed structure is evaluated in the respect of antenna dimensions. Also, several experiments have been carried out to confirm the theoretical predictions. Using a prototype model fabricated on an LTCC substrate, the size reduction of more the 50% is attained.

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Applying electric-magnetic-electric (EME) composite metal strips to reduce the size of patch antennas

Cited by 2 publications

References 7 publications

Artificially integrated synthetic rectangular waveguide

Artificially integrated synthetic rectangular waveguide

A Novel Miniaturization Technique of a Microstrip Patch Antenna using Patch Resonators

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