| Patent Number |
Title Of Patent |
Date Issued |
| 5969680 |
Antenna device having a radiating portion provided between a wiring substrate and a case |
October 19, 1999 |
| An antenna device having a power supplying portion 52 mounted on a main wiring substrate 53a and a radiating portion 56a provided in a space between the main wiring substrate 53a and the inner surface of a sheathing case 55, the lower surface of the radiating portion 56a being opposed to |
| 5912647 |
Antenna unit |
June 15, 1999 |
| An antenna unit having a substrate and a radiator, including a metal plate, which is mounted on the substrate, the radiator being provided with a feed terminal, a ground terminal and an electrostatic capacitance connecting terminal extending toward the substrate, so that the radiator is |
| 5777587 |
Surface-mounted antenna |
July 7, 1998 |
| An antenna includes a dielectric substrate, an input/output electrode, a metal wire, and a metal cap. The metal wire is coiled so that its forward end is connected to the input/output electrode through a connecting electrode and a lead electrode while its another end is connected to an |
| 5668511 |
Low-pass filter |
September 16, 1997 |
| A low-pass filter is obtained by inserting a third dielectric substrate having a shielding electrode on its upper surface between a first dielectric substrate having microstriplines on its upper surface and a second dielectric substrate having capacitor electrodes on its upper surfac |
| 5656874 |
High-frequency component and high-frequency circuit |
August 12, 1997 |
| A ground electrode is formed on the back surface of a dielectric substrate, while a high-frequency element consisting of a diode or a transistor and signal lines conducting with the high-frequency element are formed on the front surface thereof. Striplines are formed to extend from inter |
| 5585810 |
Antenna unit |
December 17, 1996 |
| An antenna unit whose resonance frequency is switchable, the antenna unit including an antenna body (11) having a distributed inductance component (L.sub.1), an impedance adjusting inductance component (L.sub.1) and a capacitance (C.sub.1) provided between the same and the ground potenti |
| 5530919 |
Mobile communicator with means for attenuating transmitted output toward the user |
June 25, 1996 |
| Disclosed herein is a mobile communicator comprising an antenna (3) built in a portable telephone body (1), and a circuit board (2) built in the communicator body (1) and provided with a ground electrode pattern (2a) arranged between an outer surface part (1a), which is brought into cont |
| 5510802 |
Surface-mountable antenna unit |
April 23, 1996 |
| A surface-mountable antenna unit including a dielectric substrate having a rectangular plane shape which is provided on a side surface and/or a bottom surface thereof with a ground electrode, and a radiator, provided with a radiating part having a substantially rectangular plane shape, |
| 5404118 |
Band pass filter with resonator having spiral electrodes formed of coil electrodes on plurality |
April 4, 1995 |
| Coil electrodes having a U-shape and shield electrodes having a plane shape are formed on plural dielectric layers. The coil electrodes are connected via through holes which are formed through the dielectric layers, and a spiral electrode is formed. An earth terminal and an input/output |
| 5382927 |
Band-pass filter having two looped-shaped electrodes |
January 17, 1995 |
| Two coil electrode patterns are formed on one surface of a plate consisting of a dielectric material. These coil electrode patterns are formed in a loop shape, and are disposed so as to be magnetically coupled with each other. Input/output terminal patterns and earth terminal patterns ar |
| 4894629 |
Bandpass filter having magnetically coupled resonators |
January 16, 1990 |
| A bandpass filter comprising a plurality of resonators coupled by a magnetic induction coupling. Each of the resonators includes an equivalent circuit having an LC series circuit and a capacitance element connected in parallel, the LC series circuit including one capacitance element and |
