Abstract:
A protecting device is for use in protecting a radio communication device (15) under high and low temperature. The protecting device comprises a cover member (31) of a heat insulator that defines a room therein. The radio communication device is located in the room. First and second opening portions (31a, 31b) are formed at the cover member. The first opening portion may be opposite to the second opening portion. Each of the first and the second opening portions has a predetermined opening area. The protecting device further comprises first and second damper members (32a, 32b) and has first and second driving sections (33a, 33b, 34a, 34b). The first driving section drives the first damper member in accordance with a room temperature to make the first damper member vary the predetermined opening area into a variable opening area in the first opening portion. The variable opening area is smaller than the predetermined opening area. Similarly, the second driving section drives the second damper member in accordance with the room temperature to make the second damper member vary the predetermined opening area into the variable opening area in the second opening area.
Abstract:
A protecting device is for use in protecting a radio communication device (15) under high and low temperature. The protecting device comprises a cover member (31) of a heat insulator that defines a room therein. The radio communication device is located in the room. First and second opening portions (31a, 31b) are formed at the cover member. The first opening portion may be opposite to the second opening portion. Each of the first and the second opening portions has a predetermined opening area. The protecting device further comprises first and second damper members (32a, 32b) and has first and second driving sections (33a, 33b, 34a, 34b). The first driving section drives the first damper member in accordance with a room temperature to make the first damper member vary the predetermined opening area into a variable opening area in the first opening portion. The variable opening area is smaller than the predetermined opening area. Similarly, the second driving section drives the second damper member in accordance with the room temperature to make the second damper member vary the predetermined opening area into the variable opening area in the second opening area.
Abstract:
A composite microwave circuit module assembly (80) has a dielectric substrate (20) which is formed by a lower layer, an intermediate layer and an upper layer. The lower layer and the upper layer include a lower ground surface (40) and an upper ground surface (43), respectively, and the intermediate layer includes a radio frequency signal circuit formed by an active circuit element and a passive circuit element. A number of via-holes (50) filled with metal are arranged along the radio frequency signal circuit to short-circuit the upper ground surface (43) and the lower ground surface (40) so as to shield the radio frequency signal circuit. An element mounting cavity (60) is disposed on the intermediate layer with a portion of dielectric above the intermediate layer being removed, and the active circuit element is mounted on an element mounting land in the cavity. The cavity is covered by a conductor plate member (33). A connection terminal (91) connected with the radio frequency signal circuit is provided in a surface of the dielectric substrate without projecting from the surface thereof and allows external electrical connection thereat from outside by a microwave circuit connection structure (81) having a contact member resiliently urged to said connection terminal.
Abstract:
A composite microwave circuit module assembly (80) has a dielectric substrate (20) which is formed by a lower layer, an intermediate layer and an upper layer. The lower layer and the upper layer include a lower ground surface (40) and an upper ground surface (43), respectively, and the intermediate layer includes a radio frequency signal circuit formed by an active circuit element and a passive circuit element. A number of via-holes (50) filled with metal are arranged along the radio frequency signal circuit to short-circuit the upper ground surface (43) and the lower ground surface (40) so as to shield the radio frequency signal circuit. An element mounting cavity (60) is disposed on the intermediate layer with a portion of dielectric above the intermediate layer being removed, and the active circuit element is mounted on an element mounting land in the cavity. The cavity is covered by a conductor plate member (33). A connection terminal (91) connected with the radio frequency signal circuit is provided in a surface of the dielectric substrate without projecting from the surface thereof and allows external electrical connection thereat from outside by a microwave circuit connection structure (81) having a contact member resiliently urged to said connection terminal.
Abstract:
A microwave circuit component (40) has terminals and is mounted on a principal surface (38) of a substrate (34) received in a cavity (45) of a housing (35) with a back surface (39) brought into contact with a bottom surface (44) of the cavity. With a part projected outwardly of the cavity for connection to an external conductor, a contact pin (36) is movably received in an insulator support member (37) placed in the cavity and is urged to one of the terminals. It is possible to bring the principal surface into contact with the bottom surface. In this event, the contact pin may be urged to the back surface with the terminal extended from the principal surface to the back surface.