# US 2013/0156074 A1 · Wideband rf front-end

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- Number: US 2013/0156074 A1
- Document ID: US20130156074A1
- Status: Published application
- Kind: A1
- Application number: 13/325,340
- Filed: 2011-12-14
- Published: 2013-06-20
- Earliest claimed: 2011-12-14
- Assignees: Aviacomm Inc.
- Inventors: Hans Wang; Binglei Zhang; Tao Li; Shih Hsiung Mo
- Web page: https://patentgrep.com/patent/US20130156074A1

## CPC

- H03J 5/244: {using electronic means}
- H04B 1/1027: {assessing signal quality or detecting noise/interference for the received signal}
- H04B 1/18: Input circuits, e.g. for coupling to an antenna or a transmission line (coupling networks between antennas or lines and receivers independent of the nature of the receiver H03H)
- H03J: TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H04B: TRANSMISSION

## Abstract

One embodiment of the present invention includes a transceiver for wireless communication. The transceiver includes an antenna, a transmitter, which comprises a tunable matching network and a modulator, and a receiver, which comprises a programmable band-pass filter (BPF) and a demodulator.

## Claims

### Claim 1

A receiver for wireless communication, comprising:
an antenna;
a tunable demodulator; and
a programmable band-pass filter (BPF) situated between the antenna and the tunable demodulator.

### Claim 2 (depends on 1)

The receiver of claim 1, wherein a central frequency of the programmable BPF can be tuned in a range from 300 MHz to 3.6 GHz.

### Claim 3 (depends on 2)

The receiver of claim 2, wherein the central frequency of the programmable BPF can be tuned dynamically.

### Claim 4 (depends on 1)

The receiver of claim 1, wherein the programmable BPF includes a tunable low-pass filter (LPF) and a tunable high-pass filter (HPF).

### Claim 5 (depends on 1)

The receiver of claim 1, wherein the tunable demodulator is a quadrature demodulator.

### Claim 6 (depends on 1)

The receiver of claim 1, wherein the tunable demodulator has a tuning range between 300 MHz and 3.6 GHz.

### Claim 7 (depends on 6)

The receiver of claim 6, wherein the tunable demodulator includes a fraction-N synthesizer.

### Claim 8 (depends on 1)

The receiver of claim 1, further comprising a wideband amplifier situated between the programmable BPF and the tunable demodulator.

### Claim 9

A transmitter for wireless communication, comprising:
an antenna;
a tunable modulator; and
a tunable matching network situated between the antenna and the tunable modulator.

### Claim 10 (depends on 9)

The transmitter of claim 9, wherein the tunable matching network is configured to match an impedance of the antenna over a frequency range from 300 MHz to 3.6 GHz.

### Claim 11 (depends on 9)

The transmitter of claim 9, wherein the tunable modulator is a quadrature modulator.

### Claim 12 (depends on 9)

The transmitter of claim 9, wherein the tunable modulator has a tuning range between 300 MHz and 3.6 GHz.

### Claim 13 (depends on 9)

The transmitter of claim 9, further comprising a wideband amplifier situated between the tunable modulator and the tunable matching network.

### Claim 14

A transceiver for wireless communication, comprising:
an antenna;
a transmitter, which comprises a tunable matching network and a modulator; and
a receiver, which comprises a programmable band-pass filter (BPF) and a demodulator.

### Claim 15 (depends on 14)

The transceiver of claim 14, wherein a central frequency of the programmable BPF can be tuned in a range from 300 MHz to 3.6 GHz.

### Claim 16 (depends on 14)

The transceiver of claim 14, wherein the programmable BPF includes a tunable low-pass filter (LPF) and a tunable high-pass filter (HPF).

### Claim 17 (depends on 14)

The transceiver of claim 14, wherein the tunable matching network is configured to match an impedance of the antenna over a frequency range from 300 MHz to 3.6 GHz.