Abstract: A semiconductor device including a plurality of source pads, a plurality of drain fingers, a plurality of gate fingers, a drain combiner connected to the plurality of drain fingers, and a gate combiner connected to the plurality of gate fingers. The plurality of source pads generally comprises a pair of end source pads and one or more inner source pads. Each end source pad is configured to have added inductance. Each of the drain fingers is generally disposed between two of the plurality of source pads. Each of the gate fingers is generally disposed between a respective source pad and a respective drain finger.

Abstract: An oscillator (100, 200) and a method of adjusting the frequency of oscillation of the oscillator (100, 200) are disclosed for generating a signal with an adjustable frequency in a frequency range from 1 GHZ to 200 GHz. The oscillator (100, 200) includes a loop circuit. The loop circuit has an amplifier (101), a delay element or filter (103), a phase shifter (102), a device for adjusting the phase shifter (102), and a coupler (104) to provide an output signal. The adjusting device is coupled to the phase shifter (102).

Abstract: An oscillator (100, 200) and a method of adjusting the frequency of oscillation of the oscillator (100, 200) are disclosed for generating a signal with an adjustable frequency in a frequency range from 1 GHZ to 200 GHz. The oscillator (100, 200) includes a loop circuit The loop circuit has an amplifier (101), a delay element or filter (103), a phase shifter (102), a device for adjusting the phase shifter (102), and a coupler (104) to provide an output signal. The adjusting device is coupled to the phase shifter (102).

Abstract: An antenna drive arrangement for a very high frequency omnidirectional range (VOR) navigation system for aircraft. The antenna has two vertically arrayed antenna elements located above a ground plane, and reference and variable phase signals are distributed to each of the antenna elements in amplitude and phase relationship selected to produce a null in the H-component of the radiated field which is substantially tangential to a projection of the ground plane. The null is located in a region of the field disposed radially outwardly of the antenna array.

Abstract: An antenna which is suitable for use in a very high frequency omni-directional range (VOR) navigation system for aircraft. The antenna is driven to radiate reference and variable phase signals which provide flight bearing information to an aircraft which enters the radiated field.The antenna comprises a cylindrical radiator which is formed with four orthogonally disposed longitudinally extending slots, and each slot is backed by a separate cavity which extends into the cylinder. Each cavity has an effective depth which is greater than the radial or, more usually, the diametral dimension of the cylinder, and all four cavities are configured so as to locate wholly within the cylinder.

Abstract: A special effects circuit for use in an electronic musical instrument, preferably an electronic organ, including a filter circuit having variable bandpass characteristics and a tone source supplying a signal to the input of the filter circuit. The bandpass characteristics of the filter circuit are modified in accordance with a control signal. Upon the occurrence of an input signal, a control circuit provides the filter circuit with the control signal at a random or pseudo-random value. The instrument player may select the source of input signals from a variety of sources within the organ thereby determining the times or frequency at which the control signal changes but the value of the control signal is random or pseudo-random. The tone signal output from the filter circuit has randomly or pseudo-randomly attenuated frequency characteristics and is coupled to standard organ output circuits for audio presentation.

Abstract: An instrument landing system (ILS) glidepath antenna array and drive therefor which provides for lower susceptibility to above-ground interference and higher stability than the known M-array system. The antenna array also provides for a shorter image ground requirement than the known null reference and sideband reference systems. The antenna array comprises a four-element structure, two of which are driven with CBS only signals having relatively different amplitude and phase, and the other two elements of which are driven with SBO only signals having relatively different amplitude and phase.

Abstract: A drive arrangement for an instrument landing system (ILS) glidepath antenna array, the drive system providing for a shorter image ground than is required by the known null reference, sideband reference or M-array systems. The drive system is applicable to an antenna array structure which is similar to an M-array structure, but the drive signals are fundamentally different from the M-array drives and the resultant field pattern does not have the "scooped portion" characteristically associated with the M-array system. A three element array structure is employed, with SBO signals driving each of the elements and CSB signals driving also two of the elements.