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In this paper, a new wide-band low-voltage low-power mixer is proposed. Using a modified stacked topology in conjunction with current bleeding technique, the mixer has a power consumption of 10mw while it uses a voltage supply of 1.2 V. Parallel peaking inductors are used to increase the RF frequency and broaden the bandwidth of the mixer. The 3-dB RF frequency band of the mixer is form 7GHz to 15GHz,...
In this paper, we present a design method of bandwidth enhancement for Distributed Amplifiers (DAs), by using filter structures. Instead of using classical constant-k section in conventional DA we use both Chebyshev and Butterworth filters in both transmission lines in order to form respectively the gate and drain transmission lines of the new DA. In order to improve the bandwidth, the filter structure...
Based on composite right/left handed (CRLH) transmission lines (TLs) we propose a backward coupled-line coupler characterized by reduced size and enhanced bandwidth with respect to many other CRLH coupled-line couplers which have been introduced. This symmetric microstrip coupler with quadrature phase difference has also higher coupling-level and wider bandwidth than conventional coupled-line couplers...
In this paper, a new distributed active mixer is presented. The scheme is based on the conventional Gilbert-cell multiplier with complementary transconductance stage. By adding the preamplifier and non-uniform artificial transmission lines on the topology, the new distributed active mixer is obtained. Comparison of the new mixer with the topology in absence of preamplifier shows that it has higher...
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