Nec Corporation

Hirohisa Ozawa

Yuhei Kosugi

Osamu Yamamoto

Yoshio Minowa

Shigeo Ogawa

Hideki Kusamitsu

Kazuo Kosukegawa

Noriyuki Asari

Masao Momose

In a portable satellite communication equipment including a transponder for transmission and reception, and an antenna portion which is electrically coupled to the transponder, the antenna portion has first and second common flat antennae. The first and the second common flat antennae are common to both the transmission and the reception and are foldably coupled to each other.

Portable satellite communication equipment with foldable flat antennae

Transmission and reception unit for a mini-earth station

The invention eliminates polarization problems and feeder waveguide loss in a miniature microwave transmitter/receiver. This is done by providing a massive heat sink, metal housing with a primary radiator which is rotatably mounted on the end of the housing. Polarization is accomplished by rotating the radiator on the housing. Inside the housing there is a hybrid of integrated circuits mounted on internal parts of the housing which provide both heat sinking and waveguide functions.

Microwave transmitter/receiver apparatus

In a microwave connector assembly for electrical connection of adjacent ones of microwave circuit components, an internal conductor is accommodated in a cavity formed by an external conductor member and is supported by an insulator support member within the cavity. The internal conductor is operable as a leaf spring and elastically brought into contact with a pair of contacts fixed to radio frequency terminals of the adjacent microwave circuit components. The external conductor member may be formed either by a base plate for mounting the circuit components or by a conductive case which is covered with a conductive cap and which is located in an opening of the base plate. A print board may mechanically be attached to the base plate so as to supply a bias voltage to each circuit component through bias terminals thereof.

Microwave connector assembly capable of being readily connected to

Growing community of inventors

Tokyo, Japan

Hirohisa Ozawa