Charalampos Kapnistis

A digitally calibrated 5.15-5.825GHz transceiver for 802.11a wireless LANs in 0.18/spl mu/m CMOS

This transceiver achieves a transmit 1dB output compression point of +15dBm, and the overall receiver noise figure is 5dB. A power gain range of >45dB/65dB for transmit/receive and a PLL synthesizer frequency range of 4.9 to 5.85GHz with -79dBc/Hz phase noise at 10kHz offset have been measured. The IC is realized in 0.5/spl mu/m SiGe BICMOS technology and occupies 17mm/sup 2/.

A 0.18/spl mu/m CMOS Dual-Band Direct-Conversion DVB-H Receiver

A 0.18mum CMOS direct-conversion dual-band DVB-H receiver occupies 9.7mm2 and achieves a 4dB/5dB NF at UHF/L-band, eliminating the need for an external LNA. By using a fractional-N synthesizer, the 470 to 890MHz and 1.4 to 1.8GHz bands are supported while achieving an integrated phase noise of <-41dBc. 6th-order LPF support channel bandwidths from 4 to 10 MHz. The overall power consumption is 295mW/280mW for continuous operation in the UHF/L-band, respectively

A 65nm CMOS multi-standard, multi-band mobile TV tuner

A direct conversion, 65 nm CMOS multi-standard TV tuner is presented, which is compliant with several digital terrestrial, fixed and mobile TV standards (DVB-T, DVB-H, T-DMB and ISDB-T, including 1-3 segment). The tuner achieves a 3/3/2.8 dB NF at VHF, UHF and L-band respectively, while consuming less than 140 mW in DVB-T mode. By using integrated transformers, both single-ended and differential RF inputs are supported. Multi-standard capability is enabled by programmable channel-select filters and a Sigma-Delta fractional-N synthesizer.

CMOS tuners for mobile TV

Digital video reception is emerging as the latest feature toward multimedia-enriched handheld devices. Mobile battery-operated devices require small-size tuners that consume low power and are amenable to single-chip integration with the baseband demodulator. Following an overview of the system and circuit-level implementation challenges of mobile TV standards such as DVB-H and T-DMB, this article presents a dual-band direct conversion tuner for DVB-H. Architecture and circuit trade-offs are discussed, and detailed measurements are presented. The tuner occupies 9.7 mm2 and achieves a 4 dB NF at both UHF and L-band, eliminating the need for an external LNA. By using a fractional-TV synthesizer both 470-890 MHz and 1.4-1.8 GHz bands are supported, while achieving an integrated phase noise of less than -41 dBc. Sixth-order low-pass filters support channel bandwidths from 4 to 10 MHz

A single-chip, 5.15GHz-5.35GHz, 2.4GHz-2.5GHz, 0.18/spl mu/m CMOS RF transceiver for 802.11a/b/g wireless LAN

A dual band, 5.15GHz-5.35GHz, 2.4GHz-2.5GHz, zero-IF transceiver is fabricated on a 0.18/spl mu/m CMOS process. The fully integrated synthesizer and VCO achieve an integrated phase error of 0.8/spl deg/ at 5GHz. The transmitter achieves -33dB EVM, while the receiver features a 5.2dB noise figure (NF) at 5.25GHz and 3.5dB NF at 2.45GHz. An architecture including feedback paths enables digital calibration, which help eliminate I/Q mismatch and achieve accurately matched baseband filter tuning.

A small area charge sensitive readout chain with a dual mode of operation

AbstractA charge sensitive readout chain has been designed and fabricated in acommercially available 0.8 μm CMOS technology. The readout chain is optimizedfor pixel detectors measuring soft X-ray energies up to 20 KeV. In the first modean analog signal proportional to input charge is generated and processed in realtime. In the second mode a peak-and-hold operation is enabled and therelevant signal is processed in later time. This dual mode of operation iscontrolled by an external digital signal. The readout chain consists of a chargeamplifier, a shaper, an operational amplifier which can either operate as avoltage amplifier or a peak detector and an output buffer. Its area is

A cost-efficient 0.18 /spl mu/m CMOS RF transceiver using a fractional-N synthesizer for 802.11b/g wireless LAN applications

270\mu {\text{m}} \times {\text{150}}\mu {\text{m}}

9.1 A 13mm 2 40nm multiband GSM/EDGE/HSPA+/TDSCDMA/LTE transceiver

. The gain at the shaper output is 378 mv/fC, theENC is 16