Transmitter/receiver circuit and transmission/reception method
First Claim
1. A method for transmitting/receiving a plurality of signals having different frequency bands by using a main antenna capable of transmitting/receiving a plurality of signals having different frequency bands and a sub antenna capable of receiving a plurality of signals having different frequency bands, said method including:
- a first step of judging whether or not an operation mode is a hybrid mode of transmitting/receiving signals of two different frequency bands by using the main antenna and the sub antenna, anda second step of selecting a frequency band of the signal received at the sub antenna and attenuating the selected frequency band of the signal, in accordance with either a transmission signal output from or a reception signal at the main antenna, when the hybrid mode is detected.
1 Assignment
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Accused Products
Abstract
There are provided a transmitter/receiver circuit and a transmission/reception method that can reduce the insertion loss of a circuit in a hybrid operation and are suitable for reducing the cost, size, and power consumption. An antenna switch 119 includes attenuation filters 201 to 203 for attenuating the frequency bands corresponding to a plurality of receiving systems, e.g., the frequency band of an 800 MHz band system, the frequency band of a 2 GHz band system, and GPS reception frequency components. These filters 201 to 203 are connected between a primary (main) antenna connection terminal T204 and a first switch group SWG201 through connection switches 204 to 206.
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Citations
4 Claims
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1. A method for transmitting/receiving a plurality of signals having different frequency bands by using a main antenna capable of transmitting/receiving a plurality of signals having different frequency bands and a sub antenna capable of receiving a plurality of signals having different frequency bands, said method including:
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a first step of judging whether or not an operation mode is a hybrid mode of transmitting/receiving signals of two different frequency bands by using the main antenna and the sub antenna, and a second step of selecting a frequency band of the signal received at the sub antenna and attenuating the selected frequency band of the signal, in accordance with either a transmission signal output from or a reception signal at the main antenna, when the hybrid mode is detected. - View Dependent Claims (2, 3, 4)
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Specification