发明名称 |
INTERMEDIATE FREQUENCY RECEIVER APPARATUS |
摘要 |
A transmitting and receiving system having two or more radios, each capable of transmitting and re- ceiving a transmission signal on two or more radio frequencies where a first radio transmits on a selected frequency at a predetermined time interval and a second radio recovers the transmitted signal. The second radio has a first intermediate frequen- cy generator which generates an intermediate fre- quency signal which is substantially equal to an integer multiple of the channel spacing whereby an image response corresponding to the selected fre- quency is separated by twice the intermediate fre- quency signal from the selected frequency. Thus, locations for the two or more transmission frequen- cies can be selected so as not to be located on the image responses corresponding to any and all of the two or more transmission frequencies.
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申请公布号 |
CA2124878(A1) |
申请公布日期 |
1994.12.03 |
申请号 |
CA19942124878 |
申请日期 |
1994.06.01 |
申请人 |
VTECH COMMUNICATIONS LTD. |
发明人 |
DORMER, MICHAEL WILLIAM |
分类号 |
H03D7/18;H04B1/40;(IPC1-7):H04B7/12 |
主分类号 |
H03D7/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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