Title:
ホーンアンテナおよびその製造方法
Document Type and Number:
Japanese Patent JP5036772
Kind Code:
B2
Abstract:
A dual- or quad-ridged horn antenna with an embedded impedance matching network is provided herein. According to one embodiment, the horn antenna may include at least one pair of ridges arranged opposite one another for guiding an electromagnetic wave there between. A transmission line is coupled to a first one of the ridges for supplying power to, or receiving a signal from, a feed region of the horn antenna. To reduce impedance mismatches between the transmission line and the ridges, an impedance matching network is embedded within a second one of the ridges at the feed point. The impedance matching network reduces impedance mismatch and extends the operational frequency range of the horn antenna by providing a sufficient amount of series capacitance between the transmission line and the ridges at the feed region. As set forth herein, the impedance matching network is preferably implemented as an open-circuit transmission line stub or capacitive stub.
Inventors:
James S. McLean
Application Number:
JP2009184783A
Publication Date:
September 26, 2012
Filing Date:
August 07, 2009
Export Citation:
Assignee:
tdk Corporation
International Classes:
H01Q13/02; H01P11/00
Domestic Patent References:
| JP2001168635A | ||||
| JP2000323942A | ||||
| JP2001068920A | ||||
| JP2001102856A | ||||
| JP50124556A | ||||
| JP2004282568A | ||||
| JP2000502530A | ||||
| JP2000261232A | ||||
| JP11298209A | ||||
| JP2005312049A |
Attorney, Agent or Firm:
Yasushi Santanzaki
Yoichiro Fujishima
Yoichiro Fujishima