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Yagi Antenna Co., Ltd. Patents
Assignee:
Yagi Antenna Co., Ltd.
Address:
Tokyo, JP
No. of patents:
20
Patents:












Patent Number Title Of Patent Date Issued
D308972 Television receiving antenna July 3, 1990
D295517 Television receiving antenna May 3, 1988
6864850 Multibeam antenna March 8, 2005
When a converter 14 is rotated via a rotation mechanism 17, the arrangement inclination angle of two primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. with respect to an axis which is in parallel with the ground. Also the reception polarization angle due to probe
6388633 Multibeam antenna May 14, 2002
When a converter 14 is rotated via a rotation mechanism 17, the arrangement inclination angle of two primary radiators 15a and 16b can be adjusted in the range of 0 to 20 deg. with respect to an axis which is in parallel with the ground. Also the reception polarization angle due to probe
6195034 Radio wave absorbing panel February 27, 2001
A radio wave absorbing panel is made up of a first insulating substrate and a second insulating substrate disposed in parallel a predetermined distance apart and a middle insulating substrate disposed between and parallel with the first and second substrates. The first and second sub
6144706 Distortion compensation circuit November 7, 2000
To obtain a uniform improving effect of secondary distortion over a wide frequency band with a very simple configuration and less power consumption in the distortion compensation circuit, that improves the secondary distortion circuit of an optical transmitter and a high-frequency am
6121939 Multibeam antenna September 19, 2000
When a converter 14 is rotated via a rotation mechanism 17, the arrangement inclination angle of two primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. with respect to an axis which is in parallel with the ground. Also the reception polarization angle due to probe
6052099 Multibeam antenna April 18, 2000
When a converter 14 is rotated via a rotation mechanism 17, the arrangement inclination angle of two primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. with respect to an axis which is in parallel with the ground. Also the reception polarization angle due to probe
5703530 Radio frequency amplifier having improved CTB and cross modulation characteristics December 30, 1997
A radio-frequency amplifier circuit of simple construction having low power consumption and low heat generation and which amplifies an input signal while maintaining composite triple beat (CTB) distortion, type cross modulation distortion at a minimum, is provided. The radio-frequency
5416492 Electromagnetic radiator using a leaky NRD waveguide May 16, 1995
Dielectric strips made of a dielectric material are placed between a pair of conductor plates located a specified distance apart. Cutouts are formed in the dielectric strips. The cutouts, a part of each dielectric strip is formed into an electrically asymmetric portion. When high-frequen
5181042 Microstrip array antenna January 19, 1993
A planar microstrip array antenna with a beam tilt, which comprises a plurality of pairs of circularly polarized wave radiating elements, the orientation angles of the two radiating elements in each pair being different by a predetermined angle within the plane of the planar antenna.
5150365 Communication system for coexistent base band and broad band signals September 22, 1992
A base-band and broad-band coexisting communication system comprises a transmission path, a plurality of first data terminal units outputting data to be transmitted in the form of pulse signals (base band signals), a plurality of second data terminal units for outputting data to be t
4987424 Film antenna apparatus January 22, 1991
An antenna apparatus in which flexible antennas made of a conductive material are formed on a flexible insulating sheet. An insulating film made of a synthetic resin material is used as the insulating sheet, and the antennas are formed by adhering a metal foil on the insulating sheet
4864632 Indoor wiring system for VHF/UHF signal lines September 5, 1989
Disclosed is a wiring system which has a terminal device having an output mini-jack connected to a reception antenna, a booster having input and output mini-jacks, intermediate equipment, e.g., a distributor, a branching filter, and the like, and a cable unit having a coaxial cable at
4617565 Method and device for data communication October 14, 1986
In this data communication system, data communication is conducted through transmission lines between a plurality of stations. At each station, the presence of data to be sent is detected, the length of the detected data is measured, and that that station is disconnected from the transmi
4602252 Method and device for data communication July 22, 1986
A method for data communication usable for a system having a common transmission line, a plurality of transceivers connected to the common transmission line, and a data processing equipment connected to each of the transceivers, the system being arranged such that data from the data
4547751 System for frequency modulation October 15, 1985
A system for frequency modulation which generates first and second signals having different frequencies in a switching manner in accordance with the logical value of an input signal. The system includes an oscillator for generating a signal having a predetermined frequency; first and sec
4516221 Data communication system May 7, 1985
A data communication system including reflectors having first light emitting elements for radiating light and first light receiving elements for receiving light, a plurality of transceivers disposed confronting said reflectors and having second light emitting elements for radiating light
4334214 Warning apparatus using microwaves June 8, 1982
A warning apparatus comprises a Gunn oscillator, a transmitting antenna, a receiving antenna, a detector, and a comparator which produces a detecting signal when the output signal from the detector is belowed a reference level. The warning apparatus further comprises a drive circuit for
3974399 Active high Q filter using transistor August 10, 1976
Disclosed is a two-terminal active impedance circuit which comprises a transistor having emitter connected to one terminal of the circuit through a resistor, collector and base directly connected to each other, and a capacitor connected between the one terminal and the collector, said ba

 
 
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