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Mobile wireless network for L-band MMIC quadrature IF mixer

A 0t (a A ~ 6dBm one by one 3dB. Machine summary rate for 3dBm ... 6dBm2.. A 1ooolOO200 transversion rate in the Dayton (M} h) column Deaf (b) @ M ~ g (MHz) Figure 9 (a) amplitude and (b) the phase balance and power of the local control withdrawal relationship between the cutting curve (the amount of radio frequency unchanged) in Figure 10,[link widoczny dla zalogowanych], the RF and local oscillator frequency fixed at 10MHz offset scan, the table Mingding RF circuits and mixed units composed of other components of the bandwidth of the mixer. These data suggest that the small mixer offers more than 300MHz of bandwidth and in this application,[link widoczny dla zalogowanych], the RF hybrid circuits is limited by the phase equilibrium. The rest of the balance in less demanding applications can be much wider The frequency range using this circuit. Electronic Engineering l995 on l of --37--3 Bo Xin Gou e vase S5 ... ● '- Yi Zhen from the center of things whip shot (MH) a 200 (b) 1000100200 Boran radio Yu rate base in (MHz) Figure 10 ( Cool

amplitude and (b) the phase balance and the relationship between the local oscillator power curve (in the car captures the amount of fixed rate) as shown in Figure u asked for the port isolation. RF and the local oscillator to IF isolation mainly by the RF / IF oscillator circuit to achieve duplex. For narrowband applications,[link widoczny dla zalogowanych], more than 2SdB isolation is possible. The local oscillator and RF isolation in this design than the single-ended diode mixer is much higher. This is because the RF and local oscillator input is the drain metal semiconductor field effect transistors separated by a control capacitance. turtles Xiao vertical silicon n0511-52-2-53 盘 (GHz) ring ll is end of the mixing device 121 and port Dayton isolation is shown in Figure l2 below 3dBm local oscillator drive power of a mixed decadent double-carrier devices,[link widoczny dla zalogowanych], the three screening. The chant is the best of this design. on the injection of the local oscillator port of the DC bias to the measures. so that the low vibration level under instructions from the amount of loss and intermodulation become the best state. in a bias within the intermodulation test, only a slight improvement (<? loss dB ・ and change it to some extent deteriorated. for +3 dBm LO drive level is. the best output of the mixer abundance of Electronic Engineering in 1995, splitting the fulcrum of a 38 1 about a ● ● q-2dBm. Figure 12 in 5dBm Ai Feng machine vibration device includes a power third-order truncation 1cIBm dual carrier case has completed mixed-modulation device the size of the rebellion is 3.1mmX1.9ram. This design mainly by the orthogonal The size of the phase splitter with the decision. Figure 13 shows the circuit layout. without the need to be thrown wide frequency bandwidth, by using a mixture of two inductor circuit, greatly reduced the size of the mixer. in the amplitude and phase balance the needs of less stringent applications, eliminating the need for local oscillator phase splitter can further reduce the size of the mixer. power-Tt ~ 1995, No. 1 Ai mixed captures Figure 13 is a circuit layout of the device 39 ~ Conclusion This article describes the network used for wireless local (LAN) ~ I data exchange applications, quadrature mixer. The quadrature mixer image rejection mixer in the simulation is also useful in applications, only the amount of ports in Add an external hybrid circuit can be realized. This design shows the RF input bandwidth of 300MHz, and the IF output bandwidth of DC ~ l5OMHz provide a good balance between the amplitude and phase characteristics of the symmetry of this circuit to make it available through the I and Q ports the input signal to provide a reverse work. With proper inputs, you can a 150MHz modulation bandwidth in the DC and L-band output of quadrature phase shift key modulation. References ~ 1jJohnP.Costas, SynchronousCommunication, ProceedingsIRE, December1956 , 6pp1713-1718. [2jStephanA.Maas, MicrowaveMixers.ArtechHouse, Norwood, MA, 1992. [3] J, StaudingerandW.Seely, AnOctaveBandwidth90. CouplerTopologySuitable / orMMICs, MicrowaveJourna1, Novemberl990, PP.117 ~ 130. [4] M. Tsai.eta1..AnE/DModeS-BandMMICFrequencyConverter, 1993IEEEGaAs1CSymposium. Electronic Engineering, No. 1 ● 1995
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