Title:
高周波センサ
Document Type and Number:
Japanese Patent JP4560806
Kind Code:
B2
Abstract:
A microstrip antenna has feed element 102 and parasitic elements 104, 106 on the front surface of substrate 1. Microwave electrical power is applied to feed element 102. Parasitic elements 104, 106 are connected via through hole type leads passsing through substrate 1, to switches upon the rear surface of substrate 1, respectively. By actuating the switches individually, parasitic elements 104, 106 are individually switched between a grounded state and a float state. The direction of the radio beam emitted from the microstrip antenna is varied by selecting which of parasitic elements 104, 106 is grounded and floated. A microwave signal source connects to feed element 102 via an feed line 108 very much shorter than the wavelength, accordingly the transmission losses being low and the efficiency being excellent.
Inventors:
Kensuke Murata
Hiroyuki Tsuboi
Kengo Iwata
Tomoyuki Abe
Hiroyuki Tsuboi
Kengo Iwata
Tomoyuki Abe
Application Number:
JP2008238818A
Publication Date:
October 13, 2010
Filing Date:
September 18, 2008
Export Citation:
Assignee:
TOTO Ltd.
International Classes:
H01Q3/44; G01S7/02; G01S7/03; H01Q13/08
Domestic Patent References:
| JP2004128600A | ||||
| JP1028013A | ||||
| JP11136025A | ||||
| JP2000114856A | ||||
| JP8321716A | ||||
| JP200423546A | ||||
| JP588004B2 | ||||
| JP2003142919A | ||||
| JP200440554A | ||||
| JP294713A | ||||
| JP2000278024A | ||||
| JP11163620A |
Foreign References:
| WO2002039544A1 |
Attorney, Agent or Firm:
Masahiko Hinataji