Dielectric resonator antenna for a mobile communication

• US 6,198,450 B1
• Filed: 06/01/2000
• Issued: 03/06/2001
• Est. Priority Date: 06/20/1995
• Status: Expired due to Term

• Current Assignee: Adachi, Naoki, Kazuaki Takahashi, Kenichi Maeda, Makoto Hasegawa, Mitsuo Makimoto, Morikazu Sagawa, Suguru Fujita, Takashi Fukagawa
• Original Assignee: Adachi, Naoki, Kazuaki Takahashi, Kenichi Maeda, Makoto Hasegawa, Mitsuo Makimoto, Morikazu Sagawa, Suguru Fujita, Takashi Fukagawa
• Inventors: Fukagawa, Takashi, Fujita, Suguru, Hasegawa, Makoto, Takahashi, Kazuaki, Adachi, Naoki, Maeda, Kenichi, Sagawa, Morikazu, Makimoto, Mitsuo
• Primary Examiner(s): WIMER, MICHAEL C
• Application Number:
  US09/584,789
• Time in Patent Office: 278 Days
• Field of Search: H01/Q.138, H01/Q 1.906, 343/873, 343/753, 343/700.MS, 343/911.R, 343/767
• US Class Current: 343/753
• CPC Class Codes: H01Q 9/0485 Dielectric resonator antennas

Abstract

A hemispherical dielectric resonator is arranged on a metal substrate to make a flat surface of the hemispherical dielectric resonator contact with the metal substrate, and a dielectric wave-guiding channel is connected with a curved side surface of the hemispherical dielectric resonator. Therefore, a dielectric resonance antenna in which the hemispherical dielectric resonator and the dielectric wave-guiding channel are placed on the same metal substrate is obtained. A signal transmitting through the dielectric wave-guiding channel is fed in the hemispherical dielectric resonator, the hemispherical dielectric resonator is resonated, and an electromagnetic wave is radiated. Therefore, the dielectric resonance antenna functions as a wave radiation device.

Claims

1. A dielectric resonator antenna comprising:

a feeder circuit substrate having a conductive film on its upper surface;

a solid dielectric resonator for radiating an electromagnetic wave according to a signal;

a dielectric film arranged on the upper surface of the feeder circuit substrate to fix the solid dielectric resonator to the feeder circuit substrate;

a microstrip feeding line arranged on a lower surface of the feeder circuit substrate for transmitting the signal to the solid dielectric resonator; and

a signal feeding slot arranged in the conductive film of the feeder circuit substrate and placed just under the solid dielectric resonator.

2. A dielectric resonator antenna according to claim 1 in which a relative dielectric constant of the dielectric film is lower than that of the solid dielectric resonator.

3. A dielectric resonator antenna according to claim 1 in which the solid dielectric resonator is a hemispherical dielectric resonator, and a flat surface of the hemispherical dielectric resonator contacts with the feeder circuit substrate.

4. A dielectric resonator antenna according to claim 1 in which the dielectric film has a fixing hole in which a portion of the solid dielectric resonator is tightly set to fix the solid dielectric resonator to the feeder circuit substrate.