An electronic device may be provided with a primary antenna that is used for transmitting and receiving signals and a secondary antenna that is used for receiving signals. The primary and secondary antennas may be used together in a diversity arrangement when receiving signals. The electronic device may have a transceiver. A phase shifter may be interposed between the transceiver and the secondary antenna. Control circuitry may select a communications band of interest for transmitting signals with the primary antenna. The control circuitry can adjust the phase shifter in real time based on which communications band of interest has been selected for transmission with the primary antenna. The phase shifter may impose a phase shift on signals carried between the secondary antenna and the transceiver that ensures that primary antenna efficiency degradation associated with the presence of the secondary antenna in the vicinity of the primary antenna is avoided.

Claims

19 · 3 independent · depth 5

19 granted claims

›1.independentAn electronic device, comprising:na first antenna;a second antenna;radio-frequency transceiver circuitry coupled to the first and second antennas by r…+7

›9.independentA method of operating an electric device having primary and secondary antennas, comprising:nselecting a communications band of interest for transmitti…+6

›10.↳ 9The method defined in claim 9 wherein adjusting the phase shifter comprises imposing a phase shift on antenna signals from the secondary antenna.d2+4

›18.↳ 9The method defined in claim 9, wherein each receiver port of the plurality of receiver ports is associated with a different respective communications …d2

›14.independentAn electronic device, comprising:na first antenna;a second antenna;a radio-frequency receiver;a variable phase shifter;control circuitry that adjusts …+3

Classifications

8 codes

IPC · International Patent Classification

Section H — Electricity

H01Q1/22
H01Q9/42
H04B1/40
H01Q21/28
H01Q1/52
H01Q5/371
H01Q1/24
H04B1/00

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Pendency

2.6 y

937 days filing → grant

Office actions

non-final + final

Responses

1 RCE

Examiner

April G Gonzales

art unit 2648 · TC 2600

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Citations: 17 back · 0 forward

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1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20150099474 A1	9 Apr 2015

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