摘要:
A high-frequency circuit for branching high-frequency signals for pluralities of communications systems of different frequencies, which comprises a lowpass filter circuit disposed between first and second ports and/or a highpass filter circuit disposed between the first port and a fourth port; and a matching circuit and a bandpass filter circuit disposed between the first port and a third port; the lowpass filter circuit, the highpass filter circuit and the matching circuit comprising capacitance elements and inductance elements; the bandpass filter circuit being a SAW filter; and the passband f1 of the lowpass filter circuit, the passband f2 of the bandpass filter circuit, and the passband f3 of the highpass filter circuit meeting the condition of f1
摘要:
A simplified stereotactic brain surgery device (1) comprises a frame (2) with puncture guides for guiding the tip of a puncturing needle to a predetermined position within the brain, and right and left fixing frames (3, 4) respectively having fixing needles (31, 41) for fixing the device (1) on the patient head, the fixing frames (3, 4) being displaceable in a longitudinal direction of the frame (2), and the frame (2) being provided with a plurality of guide grooves (21) for guiding the tip of a puncturing needle toward a point on a line connecting the right and left fixing needles (31, 41).
摘要:
A multilayered frequency separator comprising a plurality of insulating layers, and having at least two notch circuits. The notch circuit is constituted by pattern electrodes formed on interfaces of each of the insulating layers which construct the multilayer structure, and comprises a capacitor component connected to an inductance component. The multilayered frequency separator is suitably used for branching the frequency bands for dual-band handy phone.