| Patent Number |
Title Of Patent |
Date Issued |
| 6246301 |
High-frequency circuit apparatus |
June 12, 2001 |
| A high-frequency circuit apparatus includes two high-frequency circuits (2, 3) mounted on a printed circuit board (1), two rows of first plated through holes (6) which connect upper and lower ground plates (4, 5) on the upper and lower surfaces of the printed circuit board (1) and which |
| 6175747 |
Base transceiver station and subscriber unit in wireless local loop system using personal handy- |
January 16, 2001 |
| A base transceiver station in a wireless local loop system using a personal handy-phone system constituted by a plurality of cell stations, each accommodating a plurality of subscriber units, a hybrid section integrally handling signals transmitted and received by the plurality of cell |
| 6078824 |
Wireless base station equipment |
June 20, 2000 |
| A wireless base station equipment includes a transmission power controlling unit for controlling a transmission power of a transmitted signal to be transmitted to a mobile station in accordance with a status of signal reception from the mobile station and a beam tilt angle varying unit f |
| 5398009 |
Waveguide filter with coaxial/waveguide mode conversion |
March 14, 1995 |
| In order to improve filter loss of a waveguide filter having coaxial/waveguide mode conversion parts at its ends, conductor posts bridging a space between two long sides of the waveguide are provided between the parts and the ends. The conductor posts have sufficient thickness and re |
| 5208565 |
Dielectric filer having a decoupling aperture between coaxial resonators |
May 4, 1993 |
| A dielectric resonator with a dielectric block. The block has a plurality of resonance apertures and coupling-prevention aperture between the adjacent resonance apertures within the block. The block is entirely coated with a conductive film except a limited portion around the one end |
| 5192926 |
Dielectric filter with attenuation poles |
March 9, 1993 |
| A first dielectric block or blocks have a cut out portion and the cut out space is filled with a second dielectric block. A bypass pattern is formed on the second dielectric block and is capacitively coupled with two resonance elements formed on the first dielectric block or blocks. the |
| 5057804 |
Dielectric resonator circuit |
October 15, 1991 |
| A resonator element formed of a half or a quarter of dielectric cylinder contacts an electrically conductive plane via the resonator element's radially cut side which includes the axis of the cylinder, accordingly, resonates in TE.sub.01.delta. -mode. On an opposite side of the elect |
| 4509208 |
Frequency conversion unit |
April 2, 1985 |
| A frequency conversion unit comprising a local oscillator, first and second mixers, first and second hybrid circuits. The mixers receive, via the first hybrid circuit, local oscillation outputs from the local oscillator, and the second hybrid circuit receives outputs from the first and s |
