1. An elliptical exercise machine with adjustable foot motion comprising:
a frame;
a drive assembly situated on the frame;
first and second link arms, each link arm having a first end and a second end, the first end of each link arm being rotatably connected to the drive assembly;
first and second reciprocating foot supports, each foot support having a first end and a second end, the first end of each foot support being pivotally interconnected to the frame such that each foot support moves through an elliptical path; and
first and second brackets, wherein the first bracket adjustably connects the first link arm to the first foot support such that movement of the first bracket relative to the first link arm and the first foot support adjusts the position of the first foot support relative to the first link arm, thereby altering the elliptical path of the first foot support, and wherein the second bracket adjustably connects the second link arm to the second foot support such that movement of the second bracket relative to the second link arm and the second foot support adjusts the position of the second foot support relative to the second link arm, thereby altering the elliptical path of the second foot support.
2. The elliptical exercise machine of claim 1, wherein the first bracket has a first member and a second member pivotally connected at a first bracket joint rod, wherein the first member of the first bracket is pivotally connected to the first foot support and the second member of the first bracket is pivotally connected to the first link arm, and wherein the second bracket has a first member and a second member pivotally connected at a second bracket joint rod, wherein the first member of the second bracket is pivotally connected to the second foot support and the second member of the second bracket is pivotally connected to the second link arm.
3. The elliptical exercise machine of claim 1, wherein each bracket has a forward position and a rearward position, wherein each position yields a different elliptical path for each foot support and thereby a different foot motion for a user.
4. The elliptical exercise machine of claim 3, wherein the user can move each bracket between the forward position and the rearward position.
5. The elliptical exercise machine of claim 4 further comprising:
first and second knobs, each knob being connected to a respective bracket and situated such that the user can grasp the knob and move the bracket between the forward position and the rearward position to alter the elliptical path of each of the foot supports.
6. The elliptical exercise machine of claim 1 further comprising:
first and second swing arms, each swing arm having an upper end and a lower end, the upper end of each swing arm being rotatably connected to the frame and the lower end of each swing arm being pivotally connected to the respective first end of each foot support.
7. The elliptical exercise machine of claim 1, wherein the frame has a base support structure and an upright support structure.
8. The elliptical exercise machine of claim 7, wherein the base support structure has two sides and has a guide rail on each side, and the second end of each link arm has a roller rotatably attached to it such that the second end of each link arm can engage the respective guide rail of the base support structure.
9. The elliptical exercise machine of claim 1, wherein the drive assembly has first and second crank arms and the first end of the first link arm is pivotally connected to the first crank arm and the first end of the second link arm is pivotally connected to the second crank arm.
10. The elliptical exercise machine of claim 1, wherein the first and second brackets are configured to yield different elliptical paths selectable by a user.
11. An elliptical exercise machine with adjustable foot motion comprising:
a frame;
first and second link arms, each link arm having a first end and a second end, the first end of each link arm being rotatably connected to the frame and the second end of each link arm being rotatably coupled to the frame;
first and second reciprocating foot supports, each foot support having a first end and a second end, the first end of each foot support being linked to the frame; and
first and second brackets, wherein the first bracket has a first section and a second section, the first section of the first bracket being pivotally connected to the first foot support and the second section of the first bracket being pivotally connected to the first link arm such that the first bracket movably connects the first link arm to the first foot support and movement of the first bracket relative to the first foot support alters an elliptical path of the first foot support, and wherein the second bracket has a first section and a second section, the first section of the second bracket being pivotally connected to the second foot support and the second section of the second bracket being pivotally connected to the second link arm such that the second bracket movably connects the second link arm to the second foot support and movement of the second bracket relative to the second foot support alters an elliptical path of the second foot support.
12. The elliptical exercise machine of claim 11, wherein each bracket has a forward position and a rearward position, wherein each position yields a different elliptical path for each foot support and thereby a different foot motion for a user.
13. The elliptical exercise machine of claim 12, wherein the user can move each bracket between the forward position and the rearward position.
14. The elliptical exercise machine of claim 13 further comprising:
first and second knobs, each knob being connected to a respective bracket and situated such that the user can grasp the knob and move the bracket between the forward position and the rearward position.
15. The elliptical exercise machine of claim 11 further comprising:
first and second swing arms, each swing arm having an upper end and a lower end, the upper end of each swing arm being rotatably connected to the frame and the lower end of each swing arm being pivotally connected to the respective first end of each foot support.
16. The elliptical exercise machine of claim 11, wherein the frame has a base support structure and an upright support structure.
17. The elliptical exercise machine of claim 16, wherein the base support structure has two sides and has a guide rail on each side, and the second end of each link arm has a roller rotatably attached to it such that the second end of each link arm can engage the respective guide rail of the base support structure.
18. The elliptical exercise machine of claim 11 further comprising a drive assembly situated on the frame, wherein the drive assembly has first and second crank arms and the first end of the first link arm is pivotally connected to the first crank arm and the first end of the second link arm is pivotally connected to the second crank arm.
19. An elliptical exercise machine with adjustable foot motion comprising:
a frame having a base support structure and an upright support structure;
a drive assembly situated on the frame;
first and second link arms, each link arm having a first end and a second end, the first end of each link arm being rotatably connected to the drive assembly, and the second end of each link arm being movably connected to the base support structure;
first and second reciprocating foot supports, each foot support having a first end and a second end, each foot support being adapted to move through an elliptical path;
first and second swing arms, each swing arm having an upper end and a lower end, the upper end of each swing arm being rotatably connected to the frame and the lower end of each swing arm being pivotally connected to the respective first end of each foot support; and
first and second brackets, wherein the first bracket has a first section and a second section, the first section of the first bracket being pivotally connected to the first foot support and the second section of the first bracket being pivotally connected to the first link arm such that the first bracket movably connects the first link arm to the first foot support, and wherein the second bracket has a first section and a second section, the first section of the second bracket being pivotally connected to the second foot support and the second section of the second bracket being pivotally connected to the second link arm such that the second bracket movably connects the second link arm to the second foot support, wherein the first and second brackets are adapted to selectively alter the elliptical path of each of the foot supports.
20. The elliptical exercise machine of claim 19, wherein each bracket has a forward position and a rearward position, wherein each position fields a different elliptical path for each foot support and thereby a different foot motion for a user.
21. The elliptical exercise machine of claim 20, wherein the user can move each bracket between the forward position and the rearward position.
22. The elliptical exercise machine of claim 21 further comprising:
first and second knobs, each knob being connected to a respective bracket and situated such that the user can grasp the knob and move the bracket between the forward position and the ether rearward position.
23. The elliptical exercise machine of claim 19, wherein the first bracket is adapted to selectively adjust the position of the first foot support relative to the first link arm to alter the elliptical path of the first foot support, and wherein the second bracket is adapted to selectively adjust the position of the second foot support relative to the second link arm to alter the elliptical path of the second foot support.
24. The elliptical exercise machine of claim 19, wherein the base support structure has two sides and has a guide rail on each side, and the second end of each link arm has a roller rotatably attached to it such that the second end of each link arm can engage the respective guide rail of the base support structure.
25. The elliptical exercise machine of claim 19, wherein the drive assembly has first and second crank arms and the first end of the first link arm is pivotally connected to the first crank arm and the first end of the second link arm is pivotally connected to the second crank arm.
26. An elliptical exercise machine with adjustable foot motion comprising:
a frame;
first and second link arms, each link arm having a first end and a second end, the first end of each link arm being rotatably connected to the frame;
first and second reciprocating foot supports, each foot support having a first end and a second end, the first end of each foot support being linked to the frame; and
first and second brackets, wherein the first bracket pivotally connects the first link arm with the first foot support, and wherein the second bracket pivotally connects the second link arm with the second foot support, wherein each bracket has a forward position and a rearward position relative to its respective link arm such that each bracket can be selectively moved relative to its respective link arm, and wherein each position yields a different elliptical path for each foot support and thereby a different foot motion for a user.
27. The elliptical exercise machine of claim 26, wherein the user can move each bracket between the forward position and the rearward position.
28. The elliptical exercise machine of claim 27 further comprising:
first and second knobs, each knob being connected to a respective bracket and situated such that the user can grasp the knob and move the bracket between the forward position and the rearward position.
29. The elliptical exercise machine of claim 26 further comprising:
first and second swing arms, each swing arm having an upper end and a lower end, the upper end of each swing arm being rotatably connected to the frame and the lower end of each swing arm being pivotally connected to the respective first end of each foot support.
30. The elliptical exercise machine of claim 26, wherein the frame has a base support structure and an upright support structure.
31. The elliptical exercise machine of claim 30, wherein the base support structure has two sides and has a guide rail on each side, and the second end of each link arm has a roller rotatably attached to it such that the second end of each link arm can engage the respective guide rail of the base support structure.
32. The elliptical exercise machine of claim 26 further comprising a drive assembly situated on the frame, wherein the drive assembly has first and second crank arms and the first end of the first link arm is pivotally connected to the first crank arm and the first end of the second link arm is pivotally connected to the second crank arm.
33. The elliptical exercise machine of claim 26, wherein the first bracket has a first member and a second member pivotally connected at a first bracket joint rod, wherein the first member of the first bracket is pivotally connected to the first foot support and the second member of the first bracket is pivotally connected to the first link arm, and wherein the second bracket has a first member and a second member pivotally connected at a second bracket joint rod, wherein the first member of the second bracket is pivotally connected to the second foot support and the second member of the second bracket is pivotally connected to the second link arm.
34. The elliptical exercise machine of claim 27 further comprising:
first and second springs, each spring being connected to a respective bracket and situated such that the springs will facilitate movement of each bracket between the forward position and the rearward position.
35. The elliptical exercise machine of claim 26, wherein:
the first bracket comprises a first movable section and a first clamp pivotally linked together by a first bracket plate; and
the second bracket comprises a second movable section and a second clamp pivotally linked together by a second bracket plate.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A radio frequency transceiver having a printed circuit board on which are located a plurality of components, the printed circuit board being sandwiched between a base and a cover; the cover having a plurality of means for accommodating each of the plurality of components to separate the plurality of components into a number of virtual modules.
2. A radio frequency transceiver as claimed in claim 1, wherein all interconnects between the number of virtual modules are in the printed circuit board.
3. A radio frequency transceiver as claimed in claim 1 wherein both the base and the cover are made of a heat conductive material.
4. A radio frequency transceiver as claimed in claim 3, wherein at least one of the base and the cover act as a heat sink.
5. A radio frequency transceiver as claimed in claim 1, wherein each of the means for accommodating is a compartment in a lower surface of the cover.
6. A radio frequency transceiver as claimed in claim 5, wherein each compartment is a recess into lower surface of the cover.
7. A radio frequency transceiver as claimed in claim 6, wherein each recess is of a depth sufficient to accommodate the component to be located therein.
8. A radio frequency transceiver as claimed in claim 6, wherein at least one of the recesses passes completely through the cover.
9. A radio frequency transceiver as claimed in claim 5, wherein the compartments are formed by pathways projecting downwardly from the lower surface of the cover; the pathways forming the compartments therebetween.
10. A radio frequency transceiver as claimed in claim 5, wherein the cover includes a plurality of pathways for aligning with a plurality of DC pathways in the printed circuit board.
11. A radio frequency transceiver as claimed in claim 10, wherein the plurality of pathways extend downwardly from the cover.
12. A radio frequency transceiver as claimed in claim 1, wherein the printed circuit board includes a radio frequency layer, a radio frequency ground layer, a DC layer, and a DC ground layer.
13. A radio frequency transceiver as claimed in claim 12, wherein there is a plurality of via holes from the radio frequency ground layer to the DC ground layer to provide a virtual radio frequency ground.
14. A radio frequency transceiver as claimed in claim 1, wherein the plurality of components includes one or more selected from the group consisting of: down converter, reference oscillator, at least one band pass filter, C-band synthesizer, at least one up converter, and at least one L-band synthesizer.
15. A radio frequency transceiver as claimed in claim 12, wherein the DC layer includes the DC pathways to provide power connections to all the virtual modules.
16. A radio frequency transceiver as claimed in claim 5, wherein each compartment is of dimensions to substantially eliminate higher order modes of signal propagation.
17. A radio frequency transceiver as claimed in claim 1, wherein radio frequency radiation for each virtual module is contained within that virtual module.
18. A radio frequency transceiver as claimed in claim 1, wherein each virtual module comprises one means for accommodating and at least one component.
19. A radio frequency transceiver as claimed in claim 1, wherein the base provides a radio frequency ground.
20. A radio frequency transceiver as claimed in claim 12, wherein the DC layer includes a pattern of a plurality of fans that, in combination with the DC ground layer and radio frequency ground layer, form capacitors to filter radio frequency signals to ground.
21. A radio frequency transceiver having a printed circuit board on which are mounted a plurality of components comprising the radio frequency transceiver, and a cover; the cover including a lower surface with means for separating the cover into at least two compartments, each compartment for receiving therein at least one of the plurality of components to create at least two virtual modules.
22. A printed circuit board for use with a radio frequency transceiver wherein the printed circuit board has a radio frequency layer, a radio frequency ground layer, a DC layer, and a DC ground layer; the DC layer including a plurality of DC pathways to provide power connections to a plurality of components mountable on the printed circuit board, the plurality of components being arranged as a number of virtual modules.
23. A printed circuit board as claimed in claim 22, wherein there is a plurality of via holes from the radio frequency ground layer to the DC ground layer to provide virtual radio frequency ground.
24. A printed circuit board as claimed in claim 22, wherein the base provides a radio frequency ground.
25. A printed circuit board as claimed in claim 22, wherein the DC layer includes a pattern of a plurality of fans that, in combination with the DC ground layer and radio frequency ground layer, form capacitors to filter radio frequency signals to ground.