Z
Zhijun Zhang
Researcher at Apple Inc.
Publications - 7
Citations - 528
Zhijun Zhang is an academic researcher from Apple Inc.. The author has contributed to research in topics: Monopole antenna & Antenna (radio). The author has an hindex of 6, co-authored 7 publications receiving 528 citations.
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Patent
Hybrid antennas for electronic devices
TL;DR: In this article, a hybrid antenna is used to provide antenna coverage in a first communications band and the inverted-F antenna portion of the hybrid antenna may be used to cover a second communications band.
Patent
Button antenna for handheld devices
TL;DR: In this paper, a handheld device may have a conductive case, and an antenna can be formed as part of a button such as a pushbutton, which protrudes from the case sufficiently to allow good transmission and reception of wireless signals.
Patent
Tunable antennas for handheld devices
TL;DR: In this article, a compact tunable antenna for a handheld electronic device and methods for calibrating and using compact antennas are provided, which can be implemented with a small footprint while covering a large bandwidth.
Patent
Hybrid antennas with directly fed antenna slots for handheld electronic devices
TL;DR: In this article, a slot antenna resonating element is formed from an opening in the ground plane element of a handheld electronic device and a near-field-coupled antenna resonator is formed through electromagnetic near field coupling.
Patent
Multiband antenna for handheld electronic devices
TL;DR: In this paper, a handheld electronic device is provided that contains wireless communications circuitry, which includes antenna structures, such as conductive structures in the handheld electronic devices, and an L-shaped antenna resonating element may be located adjacent to the slot.