Wireless transmission circuit enabling modulation of radio frequency power amplification
First Claim
1. A wireless transmission circuit enabling modulation of RF power amplification, comprising:
- a signal modulator-oscillator circuit for receiving and modulating a signal data output by a signal processing circuit;
a cascade power amplification circuit including a plurality of power stages for receiving a signal data modulated and output by said signal modulator-oscillator stage, and power of said received modulated signal data being amplified at one or more of said plurality of power stages; and
a power-setting unit for setting a specific number of said power stages in said cascade power amplification circuit to be included in said power amplification of said received modulated signal according to a required transmission power and a transmission distance; and
said signal data having been power-amplified at said one or more power stages being further processed and then emitted at an antenna to be received by a remote reception device.
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Accused Products
Abstract
A wireless transmission circuit enabling modulation of RF power amplification includes a signal processing circuit for outputting a signal that is modulated and then amplified at a cascade power amplification circuit including a plurality of power stages, and is then wirelessly transmitted to and received by a computer system. The wireless transmission circuit includes at least a power-setting unit for controlling a specific number of power stages included in the power amplification circuit to be used in the power amplification of the modulated signal. When a wireless input device employing the wireless transmission circuit is used within a short transmission distance, a lower transmission power is selected via the power-setting unit; and when the wireless input device is used at a long transmission distance, a higher transmission power may be selected to achieve the remote transmission. The wireless input device could therefore have extended battery life.
87 Citations
9 Claims
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1. A wireless transmission circuit enabling modulation of RF power amplification, comprising:
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a signal modulator-oscillator circuit for receiving and modulating a signal data output by a signal processing circuit;
a cascade power amplification circuit including a plurality of power stages for receiving a signal data modulated and output by said signal modulator-oscillator stage, and power of said received modulated signal data being amplified at one or more of said plurality of power stages; and
a power-setting unit for setting a specific number of said power stages in said cascade power amplification circuit to be included in said power amplification of said received modulated signal according to a required transmission power and a transmission distance; and
said signal data having been power-amplified at said one or more power stages being further processed and then emitted at an antenna to be received by a remote reception device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless input device enabling modulation of RF power amplification, comprising a signal processing circuit for outputting a signal data that is oscillated and then amplified at a plurality of power stages before being wirelessly transmitted to and received by a computer system;
- and a power-setting unit for controlling a specific number of said power stages included in said plurality of power stages to be used in power-amplification of said signal data.
- View Dependent Claims (8, 9)
Specification