Receiving device and television receiver

Details Receiving device and television receiver Receiving device and television receiver

2007-05-29

2007-05-29

Maung, Nay (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S300000, C455S575100, C455S106000

Reexamination Certificate

active

10522275

ABSTRACT:
A receiving device in which the shielding performance is improved to solve a pulling problem in a receiving device of a direct conversion system is provided.The receiving device includes: a substrate on which an amplifier30that amplifies high frequency input signals, a filter34that passes only intended signals and removes unintended signals by tuning the amplified high frequency input signals and a direct conversion unit36that converts and detects directly the high frequency input signal from the filter; a first high-frequency shielding portion90fixed to a substrate20and which stands at the boundary between the filter and the other units for preventing radiation of the high frequency electro-magnetic wave that is induced from the filter to the space; and a second high-frequency shielding portion60provided facing and close to the filter surrounded by the first high-frequency shielding portion90and which prevents radiation of high frequency electro-magnetic waves induced from the filter to the space, together with the first high-frequency shielding portion90.

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Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 107173/1988 (Laid-open No. 28124/1990) (Sanyo Electric Co., Ltd.), Feb. 23, 1990.

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