To provide a planar antenna having orthotropic, anisotropic radiation characteristics.
A dielectric substrate 11 is cut away at a position corresponding to a slot line 12 that is an electromagnetic wave propagation path, and a slit 14 that changes a relative dielectric constant is provided. Thus, a planar antenna 10 with an orthotropic, anisotropic radiation characteristics can be obtained. Furthermore, without having to cut a part of a dielectric substrate 71 corresponding to a slot line 72, a projecting part 75 is formed such that the dielectric substrate 71 is reduced gradually, with respect to an electromagnetic wave propagation direction. Thus, H-plane directivity obtains wide-angle characteristics, in comparison with conventional planar antennas, the orthotropic, anisotropic radiation characteristics can be obtained, and deterioration of the antenna radiation efficiency caused by surge impedance non-matching on the slot line 72 can be reduced.
| JP2022129442 | ANTENNA DEVICE |
| JP7096843 | Broadband antenna |
| JP6602324 | Wireless device |
TOKO HIROYOSHI
KUKUTSU NAOYA
| JPH098547A | 1997-01-10 | |||
| JPH0951223A | 1997-02-18 | |||
| JPH11284431A | 1999-10-15 | |||
| JPH0290702A | 1990-03-30 | |||
| JPH1013143A | 1998-01-16 | |||
| JP2002290147A | 2002-10-04 | |||
| JPH077320A | 1995-01-10 |
Katsuhito