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公开(公告)号：US3480889A
公开(公告)日：1969-11-25
申请号：US65320067
申请日：1967-07-13
发明人： KACH ALFRED
IPC分类号： H01P7/06
CPC分类号： H01P7/06
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2.发明授权
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3.发明授权Unitary microwave transmit-receive duplex system with coaxial ring hybrid transformer 失效具有同轴环混合变压器的单元微波发射接收双工系统
公开(公告)号：US3624508A
公开(公告)日：1971-11-30
申请号：US3624508D
申请日：1969-09-25
发明人： KACH ALFRED
CPC分类号： H04B1/52 , H01P1/2133
摘要： Unitary microwave transmit-receive apparatus for duplex operation comprises a pair of transmitters having different carrier frequencies, a common antenna, a pair of T-junction microwave switches, a common beating oscillator having a frequency substantially midway between the transmitting carrier frequencies, and a hybrid transformer composed of a coaxial ring conductor having two signal input coupling points, a beating oscillator coupling point and two output coupling points connected to a balanced modulator frequency changer. Each of the microwave switches is connected to a transmitter, the common antenna and one of the input coupling points of the coaxial transformer in a manner to enable a transmission on either carrier frequency and simultaneous reception on the other carrier frequency, and vice versa.
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4.发明授权Linearly polarized microwave feed assembly for parabolic antennas and the like 失效线性微波微波馈线装置用于天线和类似天线
公开(公告)号：US3581311A
公开(公告)日：1971-05-25
申请号：US3581311D
申请日：1968-11-29
发明人： KACH ALFRED
摘要： A first coaxial line, short-circuited at one end and propagating a TEM wave, is surrounded by a concentric sleeve of a length approximately equal to half the operating wave length, to provide a second line with the outer conductor of the first line acting as inner conductor of the second line. The latter has one shortcircuited end and an annular radiating aperture at its opposite end. The outer conductor of the first line has a pair of diametrically opposed coupling slots with the intervening segments connected, respectively, inductively and capacitatively with the inner conductor of said first line.
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