Johan Haanstra

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A mass-produced Bluetooth Low-Energy transceiver is presented in classic double frequency VCO architecture fabricated in TSMC 55 nm CMOS. The radio part occupies 2.9 mm<sup>2</sup> while the complete SoC occupies 5.9 mm<sup>2</sup>. The transceiver consumes 11 mW when receiving at -94 dBm and 10 mW when transmitting at 0 dBm. This is roughly a factor 2(More)
Wireless sensor nodes present a difficult compromise at the system level between low power consumption, interference resilience and ease/size of the application. Recent low-power designs employ receiver architectures in which the LO runs at or below the received frequency (in TX at the required RF frequency). These architectures facilitate LO generation and(More)
This paper describes the design of an accurate and simple static complementary constant-g<sub>m</sub> biasing circuit for Nauta's transconductors in low-power low-frequency CMOS g<sub>m</sub>-C bandpass filters and their optimization and trimming for process and temperature independent filter performance. Experimental results are presented for a prototype(More)
The Hinteregger type lamp is a useful source of shortwave uv radiation. In particular, when it is operated with a so-called condensed discharge, it emits continua in various parts of the spectrum, depending on the rare gas used. A common difficulty is the occurrence of impurities that cause the appearance of strong spectral lines and the diminution of the(More)
This paper describes the design of an accurate and static complementary constant-<i>g</i><sub>m</sub> biasing circuit for Nauta's transconductors in low-power low-frequency CMOS <i>g</i><sub>m</sub><i>-C</i> bandpass filters and their optimization and trimming for process and temperature independent filter performance. Experimental results are presented for(More)
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