Apparatuses With Slot Antennas

An apparatus with a slot antenna, comprising:

• a mainboard comprising a grounding unit and a radio-frequency circuit;
• a conductor, wherein an annular radiation slot is provided on the conductor;
• a feeding terminal, the feeding terminal having a first end connected to a feeding point of the conductor, and a second end electrically connected to the radio-frequency circuit of the mainboard;
• a first inductor, the first inductor having a first end connected to a grounding point of the conductor, and a second end electrically connected to the grounding unit of the mainboard;
• and
• a first capacitor provided in the annular radiation slot and having two electrodes respectively connected to both ends of the annular radiation slot in a width direction of the annular radiation slot, wherein the first capacitor is located between the feeding terminal and the first inductor in a length direction of the annular radiation slot;
• wherein an operating frequency of the slot antenna comprises a resonant frequency band of each of at least two resonant modes of the annular radiation slot.