Electronic equipment

An electronic equipment comprising:

• a plurality of electronic devices;
• a cold stage which cools down said plurality of electronic devices to a predetermined operational temperature;
• a cold insulation member, whose phase transition temperature is in a range between the predetermined operational temperature and an upper limit of a temperature range in which said plurality of electronic devices are operable, and whose phase changes so as to retain a temperature of said plurality of electronic devices at the phase transition temperature, and
• wherein
• one of said plurality of electronic devices is a filter, a part of which is formed from a material being in a superconductive state at the predetermined operational temperature, and which selects a signal from input signals at a predetermined frequency band,
• another electronic device is a low-noise amplifier which amplifies an output signal of the filter, and
• said cold insulation member is arranged adjacent to at least the filter, of said plurality of electronic devices.