US 2017/0012679 A1 · Apparatus and Method For Digital Beam-Forming With Low-Resolution Quantization

Abstract

An antenna arrangement configured for digital beam-forming of a transmit signal comprising; a number N>1 of digital to analog converters, DACs, each of the N DACs being arranged to receive one respective digital transmit signal component, and to convert and output an analog transmit signal component, each of the N DACs having a respective resolution below a resolution required to fulfill a regulatory radio requirement in an interchangeable antenna arrangement arranged for transmission by a single antenna element connected to a single DAC; and N antenna elements, each of the N antenna elements being configured to receive one respective analog transmit signal component and to transmit the analog transmit signal component as part of the digitally beam-formed transmit signal.

Claims15

Dependent claims

A base station comprising:

a first antenna branch comprising:
1) a first low resolution digital to analog converter (DAC) configured to receive a first digital sequence associated with a first beam direction and convert the received first digital sequence to a first analog signal and 2) at least one antenna that transmits one or more beams in accordance with the beam direction associated with the first digital sequence, and
a second antenna branch comprising:
1) a second DAC configured to receive a second digital sequence associated with a second beam direction and convert the received second digital sequence to a second analog signal and 2) at least one antenna that transmits one or more beams in accordance with the beam direction associated with the second digital sequence.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

15/274,688Filed 23 Sep 2016

Priority

11 Jun 2014

Published

12 Jan 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification19 codes

H04B 7/046
Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting: taking physical layer constraints into account
H03F 1/02
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements: modifications of…
H03F 3/24
Power amplifiers, e.g. Class B amplifiers, Class C amplifiers: of transmitter output stages
H03M 1/0639
In the amplitude domain: using dither, e.g. using triangular or sawtooth waveforms

Family

Application62/010,710Us provisional application · filed 11 Jun 2014

Application14/382,057Division · filed 29 Aug 2014

Application15/274,688Division

US 2015/0365151 A1Published application

US 9,509,385 B2Related patent

US 9,831,931 B2Related patent

US 2017/0012679 A1This patent

From the US filing history. Foreign family members aren’t listed.

Apparatus and Method For Digital Beam-Forming With Low-Resolution Quantization

Life of this patent

Apparatus and Method For Digital Beam-Forming With Low-Resolution Quantization

Life of this patent

Abstract

Claims15