This paper describes the antenna and input stages of a silicon TV-tuner intended for portable devices such as cell phones, laptops and PDAs. The tuner meets the requirements of the mobile and portable DVB-T Radio Access Interface Specifications MBRAI [1]. The first stages of the tuner comprise a broadband antenna, a matching and filtering circuit, and LNA. The frequency band of operation is 470-710MHz (DVB-H). The matching and filtering circuitry comprises a strong GSM trap that attenuates the GSM frequencies by more than 40dB. The overall power gain is 20≤3dB in the band, and the NF of the total chain is less than 4dB. The power consumption is 21mW from 2.5V supply. The LNA is fabricated in a 0.25µm, 35GHz f T BiCMOS technology [2].
This paper presents a broadband fully integrated high dynamic range RF front-end with a single-inductor programmable RF amplitude equalizer, 45dB variable gain range, 4.5dB NF, 60dB CSO/CTB, and 25dB anti-aliasing protection. It is designed in a 40GHz-ft BiCMOS 0.25µm process, consumes 400mW from a 3.3V supply, and enables a cable full-spectrum receiver to capture >16 channels over an 50MHz-1GHz RF band.
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