Apple Inc.

Nvidia Corporation

Siddharth Ravichandran

Joselito Gavilan

Sathish Shanbhag Kota

Vijaykrishnan Ramakrishnan

Srirama Murthy Raju Bhupatiraju

Puneeth Prahalad

An electronic device may include wireless circuitry having one or more antennas. An antenna ground for an antenna may be formed from two separate conductive ground structures coupled to each other via a conductive interconnect structure. A slot element may be formed in one of the conductive ground structures to reject signals at one or more victim frequencies resulting from spurious signals generated by a non-ohmic contact formed between the conductive interconnect structure and the one of the conductive ground structures. The conductive interconnect structure may overlap and excite the slot element, which serves as an ineffective radiator at the one or more victim frequencies.

Electronic devices with interconnected ground structures

Techniques for providing multi-antenna devices with increased antenna-to-antenna isolation as well as methods of operating and manufacturing the same are disclosed. A multi-antenna device may include a support structure, one or more radio devices coupled to a first antenna that is coupled to the support structure at a first location, a second antenna coupled to the support structure at a second location and communicatively coupled to the one or more radio devices, and a conductive structure coupled to the support structure so that it shifts an electric field null of the first antenna from an original location toward the second location during communications using the first antenna, thereby increasing isolation between the first antenna and the second antenna. The conductive structure may have a length of approximately one half of the wavelength (e.g., of 2.4 gigahertz or 5 gigahertz) of a frequency band used for the communications.

Techniques to increase antenna-to-antenna isolation suitable for enhanced MIMO performance

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San Jose, CA, United States of America

Siddharth Ravichandran