Uniden Corporation

Tokimec Inc.

Motorola Solutions, Inc.

Masahito Asa

Yoshihiro Konishi

Hideki Fujiwara

Masayuki Nakajima

Eiichi Sano

Yoichi Harada

Tetsu Ikeda

Toshiaki Fujikura

Mohsin M Mollah

Ryutaro Hamasaki

An intermediate station and method for facilitating handover in a multi-hop communications system is disclosed. The method may include receiving a handover trigger, finding a target station to receive handover, determining whether the handover requires a timing change, wherein if it is determined that a preamble and broadcast timing change for one or more downstream stations is required, estimating when the handover will take place, instructing the one or more downstream stations to resynchronize, and performing the handover to the target station.

Intermediate station and method for facilitating handover in a multi-hop communication system

Telecommunications device equipped with in-call incoming call notification function and method for detecting in-call incoming signal notification

In order to efficiently and steadily remove a frequency-fluctuating interference wave, for instance, a leakage wave of a household electronic oven, intermixed into a received wave for communication, adaptively to the frequency deviation and the frequency fluctuation of the interference wave, a rejection band component included in the received wave applied onto a circulator an output terminal of which is connected with a variable band rejection filter is reflected from the output terminal on which impedance mismatch is caused by zero-impedance presented by the rejection filter on the basis of absorption of input wave and applied to a detector through the circulator again, in response to a detection output of which a so-called mountaineering control is effected on the variable band rejection filter for shifting the rejection band, so as to maximize the detection output of the detector adaptively to the frequency deviation and the frequency fluctuation of the interference wave.

Frequency-fluctuating interference removed receiver

In order to efficiently and steadily remove a frequency-fluctuating interference wave, for instance, a leakage wave of a household electronic oven, intermixed into a received wave for communication, adaptively to the frequency deviation and the frequency fluctuation of the interference wave, a rejection band component included in the received wave applied onto a circulator, an output terminal of which is connected with a variable band rejection filter, is reflected from the output terminal on which impedance mismatch is caused by zero-impedance presented by the rejection filter on the basis of absorption of the input wave and applied to a detector through the circulator again, in response to a detection output of which a so-called peak-keeping control is effected on the variable band rejection filter for shifting the rejection band, so as to maximize the detection output of the detector adaptively to the frequency deviation and the frequency fluctuation of the interference wave.

A waveguide having a pair of quarter-wavelength impedance transformers and adapted to divide and combine microwaves. The pair of quarter-wavelength impedance transformers includes two strip transmission lines connected together at one end, two ground conductors each located adjacent to and spaced from a respective one of said strip transmission lines, each said ground conductor serving as a ground potential at least mutually to the adjacent strip transmission line, and a dielectric substrate supporting thereon said strip transmission lines and said ground conductors. The two strip transmission lines may be connected to each other at numerous positions by resistors.

Waveguide for dividing and combining microwaves

A distributed-line power divider comprising: a common port and n distributing ports adapted to be connected with respective external lines; and n impedance transformers disposed between the common port and the distributing ports and having a filter function. The filter function of the impedance transformers may be a low-pass filter, a high-pass filter or a band-pass filter.

Growing community of inventors

Tokyo, Japan

Masahito Asa