J. Barendrecht (11)

1-03-1995 | Wideband antenna design is problematic because size and performance are conflicting aspects. The wideband antenna described in this articl...

1-12-1993 | The transmitters is a crystal-controlled, battery-powered, one-chip narrow-band FM (NB FM) model for operation in the 27-MHz band, primar...

1-07-1993 | The receiver is intended primarily for use with the remote control UHF transmitter described in the proceding article. It is a super-rege...

1-07-1993 | Communication receivers for the VHF-Iow band (30-50MHz) do not appear to exist commercially, and that is why we propose an up converter th...

1-05-1993 | The construction project described here consists of two units: an FM stereo multiplex generator and a three-stage VHF FM exciter. Toget...

1-05-1993 | The extremely wide tuning range and the AM/FM compatibility of the receiver described here allows you to listen to virtually any RF signal...

1-12-1992 | An important property of a band pass filter is its shape factor, which is the ratio of its bandwidth at high attenuation to that at low a...

1-12-1992 | The compressor is based on two series-connected attenuator networks, whose attenuation is controlled by Iight-dependent resistors (LDRs)...

1-10-1992 | This design goes to show that low noise and substantial amplification can go hand in hand in a single amplifier with excellent wideband ch...

1-07-1992 | Most VHF/UHF amplifiers for use with a symmetrtcal antenna (such as an open or closed dipole) have a balun at the input. A balun (short...