Tunable antennas for handheld devices
First Claim
1. A tunable multipart handheld electronic device patch antenna, comprising:
- a ground terminal;
a substantially planar radiating element located above the ground terminal that is electrically connected to the ground terminal; and
at least first and second antenna feeds, wherein the first antenna feed is electrically connected to the radiating element at a first location, wherein the second antenna feed is electrically connected to the radiating element at a second location that is different from the first location, wherein the first antenna feed and the ground terminal form a first antenna port through which antenna signals are transmitted and received, and wherein the second antenna feed and the ground terminal form a second antenna port through which antenna signals are transmitted and received.
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Accused Products
Abstract
A compact tunable antenna for a handheld electronic device and methods for calibrating and using compact tunable antennas are provided. The antenna can have multiple ports. Each port can have an associated feed and ground. The antenna design can be implemented with a small footprint while covering a large bandwidth. The antenna can have a radiating element formed from a conductive structure such as a patch or helix. The antenna can be shaped to accommodate buttons and other components in the handheld device. The antenna may be connected to a printed circuit board in the handheld device using springs, pogo pins, and other suitable connecting structures. Radio-frequency switches and passive components such as duplexers and diplexers may be used to couple radio-frequency transceiver circuitry to the different feeds of the antenna. Antenna efficiency can be enhanced by avoiding the use of capacitive loading for antenna tuning.
80 Citations
11 Claims
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1. A tunable multipart handheld electronic device patch antenna, comprising:
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a ground terminal; a substantially planar radiating element located above the ground terminal that is electrically connected to the ground terminal; and at least first and second antenna feeds, wherein the first antenna feed is electrically connected to the radiating element at a first location, wherein the second antenna feed is electrically connected to the radiating element at a second location that is different from the first location, wherein the first antenna feed and the ground terminal form a first antenna port through which antenna signals are transmitted and received, and wherein the second antenna feed and the ground terminal form a second antenna port through which antenna signals are transmitted and received. - View Dependent Claims (2, 3, 4, 5, 6)
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7. Tunable multiport antenna circuitry comprising:
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a substantially planar radiating element; a circuit board having a ground conductive path and first and second antenna feed conductive paths; a ground electrical connecting structure that connects the ground conductive path to the radiating element and serves as a ground terminal for the radiating element; a first feed electrical connecting structure that electrically connects the first feed conductive path on the circuit board to the radiating element at a first location and serves as a first feed terminal for the radiating element, wherein the first feed terminal and the ground terminal form a first antenna port through which antenna signals are transmitted and received; and a second feed electrical connecting structure that electrically connects the second feed conductive path on the circuit board to the radiating element at a second location distinct from the first location and serves as a second feed terminal for the radiating element, wherein the second feed terminal and the second ground terminal form a second antenna port through which antenna signals are transmitted and received. - View Dependent Claims (8, 9, 10, 11)
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Specification