Integrated amplifier arrangement

A technology of amplifiers and couplers, which is applied in the field of amplifier systems and can solve problems such as expensive processing costs

Inactive Publication Date: 2010-01-27
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it is expensive to machine because the positioning and coupling of such discrete elements must be performed with high precision in order to reproduce the desired characteristics of the machined amplifier.

Method used

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Embodiment Construction

[0018] exist figure 1 The semiconductor substrate 1 shown in the middle section has the following structures: a first amplifier 2 , a second amplifier 3 , a Lange coupler 4 , two adjustable resistors 5 , 6 and two control circuits 7 , 8 .

[0019] The input terminal of the first amplifier 2 is connected to a millimeter-wave signal source to be amplified, which is not shown, and it can be located outside the semiconductor substrate 1 . The output of the amplifier 2 passes through the capacitor 9 and the first gate circuit 11 of the Lange coupler 1 connected. A Lange coupler consists of five parallel conductor lines 12 1 、12 2 ,...,12 5 . middle wire line 12 3 In Gate 11 1 and gates 11 located diagonally 3 A current connection is established between them. It passes through the air bridge 13 in the middle with the next adjacent slave gate circuit 11 1 or 11 3 Departure wire line 12 1 、12 5 connected. In wire line 12 3 Conductor lines extending on both sides 12 2 、...

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Abstract

A millimetric-wave amplifier arrangement comprises a first amplifier (2) whose output is connected to one input of the second amplifier (3) via an adjustable attenuator (4, 5, 6). Both amplifiers (2, 3) are integrated on a single substrate (1).

Description

technical field [0001] The invention relates to an amplifier system for high frequency signals in the millimeter wave range. Background technique [0002] Monolithically integrated millimeter-wave amplifiers are known in the form of one-stage and two-stage amplifiers, ie two single-stage amplifiers connected one behind the other on the same substrate. When amplification cannot be easily achieved with a single-stage amplifier, a two-stage amplifier is required. However, it has the disadvantage with respect to single-stage amplifiers that the level range over which a signal can be amplified with sufficient linearity is smaller than in a single-stage amplifier, because the signal amplified with good quality by a single-stage amplifier or the first stage of a two-stage amplifier, Levels that cause the second-stage amplifier to saturate can easily be reached. For applications where this risk exists, therefore, conventional hybrid circuits can be used, consisting of a first and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F3/195H01P1/22H01P5/18
CPCH01P1/22H03F3/195H01P5/186
Inventor G·格拉德S·克恩S·科赫
Owner TELEFON AB LM ERICSSON (PUBL)
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