Title :
Millimeter-wave amplitude-phase modulator
Author :
Martynyuk, Alexander E. ; Martynyuk, Ninel A. ; Khotiaintsev, Sergei N. ; Vountesmeri, Valeri S.
Author_Institution :
Dept. of Theor. Radio Eng., Kiev Polytech. Inst., Ukraine
fDate :
6/1/1997 12:00:00 AM
Abstract :
A millimeter-wave amplitude-phase modulator, using Fox´s (polarization) principle of phase changing has been developed. Using this modulator, it is possible to perform the following types of phase modulation: binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), differential QPSK (DQPSK), π/4-DQPSK with peak phase error 5° (rms error: 2°), and peak amplitude error 2% (rms error: 1%) in the frequency range of 36-37.5 GHz. The achievable switching time is less than 35 ns. A low level of insertion loss (1 dB) is achieved. The modulator is able to switch up to 25 dBm of RF power. This modulator can also be used for changing the amplitude of the output wave from 0 to -6 dB with an accompanying phase modulation less than 3°. The modulator is suitable for use in high-speed millimeter-wave communication systems
Keywords :
amplitude modulation; differential phase shift keying; electromagnetic wave polarisation; equivalent circuits; millimetre wave devices; modulators; quadrature phase shift keying; waveguide components; π/4-DQPSK; 1 dB; 35 ns; 36 to 37.5 GHz; AM; BPSK; EHF; Fox principle; MM-wave amplitude-phase modulator; PSK; QPSK; binary phase-shift keying; differential QPSK; high-speed MM-wave communication systems; insertion loss; millimeter-wave modulator; phase changing; phase modulation; polarization principle; quadrature phase-shift keying; Amplitude modulation; Binary phase shift keying; Frequency; Insertion loss; Millimeter wave communication; Phase modulation; Phase shift keying; Polarization; Quadrature phase shift keying; Switches;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
