JP2016220207A5

JP2016220207A5 -

Info

Publication number: JP2016220207A5
Application number: JP2016100960A
Authority: JP
Filing date: 2016-05-20
Publication date: 2019-06-13
Anticipated expiration: 2036-05-20

Claims

A module of a radio frequency power amplifier for use in a multiband device, comprising:
An input terminal configured to receive a radio frequency input signal of a first transmission path of the multi-band device;
An output terminal configured to provide an amplified version of the radio frequency input signal;
A first semiconductor die including an amplifier circuit configured to amplify the radio frequency input signal for transmission by a first antenna associated with the first transmission path;
A first partial output matching network mounted on the first semiconductor die and configured to step up the output impedance of the amplifier circuit to a fixed percentage of the input impedance of the first antenna;
A second partial output matching network and filter circuit electrically connected between the first semiconductor die and the output terminal and mounted to the second semiconductor die;
The second partial output matching network and filter circuit steps up the output impedance of the first partial output matching network from the fixed ratio to the input impedance of the first antenna, and the signal received at the output terminal is Blocking in parallel to block backward propagation through the first transmission path,
A module wherein a signal received at the output terminal is emitted from a second antenna associated with a second transmission path of the multi-band device.

The module of claim 1, wherein the second partial output matching network and filter circuit comprises a plurality of integrated passive devices included in a common package.

The module of claim 1, wherein the second partial output matching network and filter circuit comprises a plurality of surface mounted devices.

The module of claim 1, wherein the second semiconductor die is separate from the first semiconductor die.

The second partial output matching network and filter circuit match the output impedance of the first partial output matching network to the input impedance of the first antenna, and the signal received at the output terminal is coupled to the first transmission path. 2. The module of claim 1, wherein the module is part of a parallel body of output matching network and filter circuitry configured to do both in parallel with blocking back propagation through.

The first partial output matching network is configured to step up the output impedance of the amplifier circuit from an initial value to a step-up value approximately between 10% and 50% of the input impedance of the first antenna. The module of claim 1.

The initial value is approximately 6 ohms,
7. The module of claim 6, wherein the step-up value is approximately 12 ohms.

7. The module of claim 6, wherein the input impedance of the first antenna is approximately 50 ohms.

The second partial output matching network and filter circuit has a matching network and filter function,
At least a portion of the components have a smaller signal loss than the signal loss associated with the matching network and the filter and are smaller in size than the separately implemented matching network and the filter The module of claim 1, wherein the module is configured to function as both the matching network and the filter.

The second partial output matching network and filter circuit has a matching network and filter function,
The module of claim 1, wherein the matching network and the filter share at least one component.

A multi-band wireless portable device,
A first antenna configured to receive and transmit a radio frequency signal and associated with the first transmission path and a second antenna associated with the second transmission path;
A transmit / receive switch configured to pass a radio frequency output signal to said first antenna for transmission purposes;
Including a radio frequency power amplifier module,
The radio frequency power amplifier module may
An input terminal configured to receive a radio frequency input signal in the first transmission path;
An output terminal configured to provide an amplified version of the radio frequency input signal;
A first semiconductor die including an amplifier circuit configured to amplify the radio frequency input signal for transmission by the first antenna;
A first partial output matching network mounted on the first semiconductor die and configured to step up the output impedance of the amplifier circuit to a fixed percentage of the input impedance of the first antenna;
Electrically connecting between the first semiconductor die and the output terminal to step an output impedance from the fixed ratio to an input impedance of the first antenna; and a signal received at the output terminal is the first Including a second partial output matching network and filter circuit configured to perform in parallel back blocking through the transmit path.
A wireless portable device in which a signal received at the output terminal is radiated from the second antenna.

The wireless handheld device of claim 11, wherein the second partial output matching network and filter circuit are mounted on a second semiconductor die separate from the first semiconductor die.

The second partial output matching network and filter circuit match the output impedance of the first partial output matching network to the input impedance of the first antenna, and the signal received at the output terminal is coupled to the first transmission path. The wireless handheld device of claim 11, being part of a parallel combination of an output matching network and a filter circuit configured to perform both back through reverse blocking.

The first partial output matching network is configured to step up the output impedance of the amplifier circuit from an initial value to a step-up value approximately between 10% and 50% of the input impedance of the first antenna. The wireless mobile device of claim 11.

The initial value is approximately 6 ohms,
15. The wireless handheld device of claim 14, wherein the step-up value is approximately 12 ohms.

15. The wireless handheld device of claim 14, wherein the input impedance of the first antenna is approximately 50 ohms.

The second partial output matching network and filter circuit has a matching network and filter function,
At least a portion of the components of the matching network and the filter of which the size is separately implemented such that the signal loss is less than the signal loss associated with the separately implemented matching network and the filter 12. The wireless mobile device of claim 11, configured to act as both the matching network and the filter to be smaller than a size.

A method of reducing intermodulation of radio frequency output signals in a multi-band wireless portable device, comprising:
Receiving a radio frequency input signal having a first fundamental frequency in an operating frequency band at an input to the power amplifier circuit along the first radio frequency path;
Amplifying the radio frequency input signal for transmission by the first antenna in the first radio frequency path to provide an amplified version of the radio frequency input signal, for amplifying the radio frequency input signal Mounting the configured amplifier circuit on a first semiconductor die;
Stepping up the output impedance of the power amplifier circuit to a fixed percentage of the input impedance of the first antenna by means of a first partial output matching network mounted on the first semiconductor die;
A second basis in which the first antenna receives the transmission of the first antenna in parallel with stepping up the output impedance of the first partial output matching network from the fixed ratio to the input impedance of the first antenna. Blocking a signal having a frequency.

19. The method of claim 18, wherein the blocking suppresses intermodulation of the first fundamental frequency and the second fundamental frequency due to re-radiation from the first antenna.

19. The method of claim 18, wherein the signal having the second fundamental frequency is emitted from a second antenna associated with a second radio frequency path of the multi-band wireless portable device.